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Accession number:41Title:Assimilation of ground measured wheat leaf area index into CERES-Wheat model based on Kalman FilterAuthors:Liu, Xiangge (1); Liu, Chunhong (1); Wang, Pengxin (1); Xing, Yajuan (1) Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China Corresponding author:Wang, P.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:176-181Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:An approach of assimilating ground measured leaf area index (LAI) into the CERES-Wheat model was developed in this paper. The CERES-Wheat model was used to simulate LAI under the Decision Support System for Agro-Technology Transfer (DSSAT) shell. Interpolation methods were used to solve the matching problem of the time scale between dynamic LAI simulated by the CERES-Wheat model and discrete LAI observed on ground. By comparisons, the interpolated LAIs by using cubic interpolation method based on measured LAI data were better than those of using the nearest neighbor interpolation, linear interpolation and cubic spline interpolation methods, respectively, which were assimilated by using Kalman Filter later. The experimental results showed that combination of the interpolation method and the Kalman Filter algorithm had stable and usable results. Assimilation results of LAI are close to their simulated and measured ones, which are better than the LAI data simulated by the model alone.Number of references:22Main heading:InterpolationControlled terms:Algorithms - Artificial intelligence - Computer simulation - Decision support systems - Decision theory - Kalman filters - Remote sensing - Technology transferUncontrolled terms:Assimilation algorithms - CERES-Wheat - Cubic spline interpolation method - Cubic-interpolation methods - Interpolation method - Kalman filter algorithms - Leaf area index - Linear Interpolation - Matching problems - Model-based& - Nearest neighbor interpolation - Time-scalesClassification code:723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 911.2 Industrial Economics - 921 Mathematics - 921.6 Numerical Methods - 961 Systems ScienceDOI:10.3969/j.issn.10.z1.033Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:13Title:Design for ridge cleaning equipment of no-tillage planter based on Pro/EAuthors:Wu, Shihong (1); Li, Baofa (2) Author affiliation:(1) College of Information and Electrification, Shenyang Agricultural University, Shenyang 110866, C (2) College of Engineering, Shenyang Agricultural University, Shenyang 110866, China Corresponding author:Wu, S.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:18-21Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:The residues cutting and ridge cleaning equipment of ridge-tillage planter are important working parts which can prevent no-tillage planter from clogging and ensure good quality of seeding. While ridge cleaning equipment is in operation, the residues often fall onto the neighboring ridge instead of falling into the furrow. So, the factors influenced the motion trace of residues are needed to be analyzed, optimized for making residues fall into the furrow. For this, how to use Pro/E software to establish the simulation model of residues cleaning equipment was introduced, and the simulation analysis of its ridge cleaning was done in this paper. The analysis results showed that the main parameters influenced the motion trace of residues is forward speed v of residue cutting and ridge cleaning equipment, oscillatory speed of level disc and the open-close angle of the back wings of ridge cleaning equipment. By taking different and simulating the level disc and observing the motion of residues, the better location of residues was achieved when v=1.153 m/s and &=60&~120&, which provided the technology support to the design of residues cutting and ridge cleaning equipment of ridge and no-tillage planter.Number of references:10Main heading:CleaningControlled terms:Agricultural machinery - Agriculture - Computer simulation - Computer software - Cutting equipment - Kinematics - Machine design - Trace analysisUncontrolled terms:Analysis results - Cleaning equipments - Forward speed - Kinematics simulation - Main parameters - No tillage - No-tillage planter - Pro/E - Pro/E software - Ridge cleaning equipment& - Simulation analysis - Simulation model - Technology support - Working partsClassification code:931.1 Mechanics - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and M Vegetation and Pest Control - 802.3 Chemical Operations - 801 Chemistry - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 604.1 Metal Cutting - 601 Mechanical DesignDOI:10.3969/j.issn.10.z1.005Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:71Title:High voltage pulsed discharge plasma for extracting polysaccharide from Auricularia AuriculaAuthors:Ma, Fengming (1); Wang, Zhenyu (1); Zhao, Haitian (1); Wu, Zhiguang (1) Author affiliation:(1) School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150090, C (2) College of Forestry, Northeast Forestry University, Harbin 150090, China Corresponding author:Wang, Z.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:363-368Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:For the sake of developing new techniques of extraction. High voltage pulsed discharge plasma (HVPDP) for extracting polysaccharide from Auricularia Auricula was studied. Through single factor experiment, there were three factors screened, i. e. pulsed discharge voltage, ratio of material to solvent, and discharge time. the technique conditions were optimized by response surface method, and HVPDP for extracting was discussed. The results showed that the optimal polysaccharides extraction conditions were pulsed discharge voltage 40.3 kV, ratio of material to solvent 40.3, discharge time 4.1 min. Under the conditions, the extraction rate of polysaccharides from Auricularia Auricula was 8.80%. The special feature of HVPDP technique over traditional extraction was short time, low energy consumption and high extraction ratio. The work indicated that extracting polysaccharide from Auricularia Auricula with HVPDP is feasible, and it will provide a base for extracting effective Ingredient with HVPDP.Number of references:24Main heading:Feature extractionControlled terms:Electric discharges - Energy utilization - Optimization - Plasma theory - PolysaccharidesUncontrolled terms:Auricularia auricula - Discharge time - Extraction conditions - Extraction rate - Extraction ratio - High voltage - Low energy consumption - Pulsed discharge - Pulsed discharge plasmas - Response surface methodClassification code:525.3 Energy Utilization - 701.1 Electricity: Basic Concepts and Phenomena - 716 T Radar, Radio and Television - 804.1 Organic Compounds - 921.5 Optimization Techniques - 932.3 Plasma PhysicsDOI:10.3969/j.issn.10.z1.064Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:33Title:Optimal regional agricultural planting structure under virtual water strategyAuthors:Liang, Meishe (1); Wang, Zhengzhong (1) Author affiliation:(1) Research Center of Water Engineering Safety and Disaster Prevention, Northwest Agriculture and Forestry University, Yangling 712100, C (2) College of Science, Northwest Agriculture and Forestry University, Yangling 712100, China Corresponding author:Wang, Z.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:130-133Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:In the past, the research of optimal allocation of irrigation of water resources was focused on the economic benefits. It had ignored the social and ecological benefits, and was not suitable for the extremely fragile and arid areas of northwest. Based on the idea of the original optimization model, this paper proposed the virtual water strategy optimization model of regional agricultural structure by setting up the rigidity constraints for local production, living conditions and water demanding to environmental improvement. Then, Minqin County was taken as an example. The results showed that the food crop acreage decreased, the vegetable crop area increased significantly with the coefficient of virtual water trade increasing. Its economic efficiency and water-use efficiency were markedly improved, and the food dependency also would be gradually increased. The trading foundation and water-saving technology could ensure the food security. Saved valuable water resource was conducive to the improvement of the ecological environment in drought region. Solving the optimization program will be helpful to develop a rational and effective policy of industrial restructuring.Number of references:18Main heading:OptimizationControlled terms:Arid regions - Crops - Ecology - Food supply - Mathematical models - Water conservation - Water managementUncontrolled terms:Arid area - Ecological benefits - Ecological environments - Economic benefits - Economic efficiency - Environmental improvements - Food crops - Food security - Industrial restructuring - Living conditions& - Local production - Minqin County - Optimal allocation - Optimization models - Optimization programs - Planting structure - Rigidity constraint - Strategy optimization - Vegetable crops - Virtual water& - Virtual water trade - Water security - Water use efficiency - Water-savingClassification code:921 Mathematics - 821.4 Agricultural Products - 454.3 Ecology and Ecosystems - 921.5 Optimization Techniques - 446 Waterworks - 443 Meteorology - 404.2 Civil Defense - 444 Water ResourcesDOI:10.3969/j.issn.10.z1.025Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:45Title:Risk assessment model of snow disaster in Qinghai Province based on GISAuthors:Fu, Yang (1); Xiao, Jianshe (1); Xiao, Ruixiang (1); Sa, Wenjun (2); Li, Fengxia (1); Zhao, Huifang (1) Author affiliation:(1) Qinghai Meteorological Science Institute, Xining 810001, C (2) Foreign Affairs Office, Agricultural and Animal Husbandry Bureau of Qinghai, Xining 810008, China Corresponding author:Fu, Y.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:197-205Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:The risk zoning of geography distribution based on the establishment of risk assessment model of snow disaster was provided to carry out the evaluation and monitoring of snow disaster rapidly and accurately in large area. According to the basic GIS data of Qinghai Province, the hazards inducing environment background data, such as gradient and slope, vegetation etc. in the grid of 91.7 m&91.7 m were taken to analyze the geographic condition of snow disaster formation based on the basic measure unit of county. The risk indexes of snow disaster scale, frequency and density which will cause the disaster have been collected for statistic analysis. The people density, economy density, traffic density and richness of land source were selected as the factor of vulnerability assessment, which would provide the accurate information to forecasting and discriminating of snow disaster. The ArcGIS software was used to set up the comprehensive quantitative risk assessment model for snow disaster in Qinghai livestock region. The susceptibility of hazard inducing environment, risk hazardous, vulnerability assessment of sustaining hazard body have been gotten by operating the graphic data base. Finally the regional map of risk management of snow disaster in Qinghai Province was obtained through overlay algorithm of hierarchical maps and plaque combination, class hierarchy. The research results can help to take the effective measurement of risk management to reduce the disaster loss before winter, and it is also very important to keep the sustainable livestock development. The research results can also provide scientific basis to work out the pre-disaster planning and disaster relief strategic decision of post-disaster, and also can provide reference value to other province in risk evaluation of snow disaster.Number of references:28Main heading:Risk assessmentControlled terms:Agriculture - Disaster prevention - Geographic information systems - Rating - Research and development management - Risk analysis - Risk management - Risk perception - Snow - ZoningUncontrolled terms:Assessment models - CIS - Class hierarchies - Data base - Disaster relief - Geographic conditions - GIS data - Hierarchical maps - Pre-disaster planning - Qinghai Province& - Quantitative risk assessment - Reference values - Research results - Risk evaluation - Risk zoning - Snow disaster - Statistic analysis - Strategic decisions - Sustaining hazard body - Traffic densities& - Vulnerability assessmentsClassification code:922 Statistical Methods - 914.1 Accidents and Accident Prevention - 914 Safety Engineering - 912.2 Management - 912 Industrial Engineering and Management - 922.1 Probability Theory - 911 Cost and Value E Industrial Economics - 821 Agricultural Equipment and M Vegetation and Pest Control - 723.3 Database Systems - 443.3 Precipitation - 403.2 Regional Planning and Development - 902.2 Codes and StandardsDOI:10.3969/j.issn.10.z1.037Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:58Title:Effects of different modifiers on Cd pollution of lettuceAuthors:Li, Hongjuan (1); Zhao, Yong (1); Wang, Qian (1); Sun, Zhiqiang (1) Author affiliation:(1) Forestry College, Henan Agricultural University, Zhengzhou 450002, C (2) Environment Engineering Design Institute, China Railway Engineering Consultants Group, Zhengzhou 450052, China Corresponding author:Zhao, Y.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:285-291Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:Taking fly ash, peat, chicken manure, silicon fertilizer, superphosphate and calcium magnesium phosphate as modifiers, and planting lettuce in Cd polluted soil, this paper studied the effects of modifiers on the Cd polluted soil, in order to find out the practical and feasible modifier scheme. The results showed that complex modifiers was better than corresponding pure modifiers clearly as to vegetable biomass and Cd mass fraction in edible part. The improvement effects for Cd pollution in soil from high to low were: fly ash+ superphosphate& superphosphate& fly ash+ chicken manure & calcium magnesium phosphate &fly ash+ peat &silicon fertilizer& chicken manure& fly ash & peat. Different modifiers had obviously different effects on lettuce biomass and Cd mass fraction, whereas the quantity of the modifiers had not that obviously different effects. Modifier type and quantity didn&t affect soil pH. The effect was the best when the ratio of fly ash and superphosphate was 5:1.Number of references:23Main heading:CadmiumControlled terms:Agricultural products - Animals - Calcium phosphate - Fertilizers - Fly ash - Magnesium - Manures - Peat - pH effects - Phosphates& - Soil pollution - SoilsUncontrolled terms:Cd - Chicken manure - Different effects - High-to-low - Lettuce - Magnesium phosphates - Mass fraction - Modifiers - Polluted soils - Soil pH& - Vegetable biomassClassification code:821 Agricultural Equipment and M Vegetation and Pest Control - 814 Leather and Tanning - 804 Chemical Products Generally - 801.1 Chemistry, General - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 822 Food Technology - 549.2 Alkaline Earth Metals - 503 Mines and Mining, Coal - 483.1 Soils and Soil Mechanics - 471 Marine Science and Oceanography - 461 Bioengineering and Biology - 524 Solid FuelsDOI:10.3969/j.issn.10.z1.051Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:52Title:Monitoring corn FPAR based on HJ-1 CCDAuthors:Chen, Xueyang (1); Meng, Jihua (1); Wu, Bingfang (1); Zhu, Jianjun (3); Du, Xin (1); Zhang, Feifei (1); Niu, Liming (1) Author affiliation:(1) Institute of Remote Sensing Applications, Chinese Acad. of Sci., Beijing 100101, C (2) Chongqing Geographic Space Information Engineering Technology Research Center, Chongqing 401121, C (3) Central South University, Changsha 410083, China Corresponding author:Meng, J.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:241-245Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:Based on the China environment and disaster reduction satellite data from Yucheng study area in Shandong Province, the four vegetations (NDVI, RVI, SAVI, and EVI) were calculated. The estimation precision of the four vegetation indexes model for the summer maize was compared by the regression analysis of the vegetation indexes with the survey data and integrated the synchronization observation data. The results indicated those vegetation indexes with high relation to FPAR; the NDVI was the top inversion precision, the optimum model to estimate the summer maize was FPAR, the model validation mean error was 3.8%. That is, the model with high precision and using the model to inverse the September FPAR of Yucheng research region in Shandong Province.Number of references:16Main heading:VegetationControlled terms:Crops - Grain (agricultural product) - Regression analysisUncontrolled terms:Corn - Disaster reduction - FPAR - High precision - HJ-1 - Mean errors - Model validation - Observation data - Optimum model - Satellite data& - Shandong province - Study areas - Summer maize - Survey data - Vegetation indexClassification code:821 Agricultural Equipment and M Vegetation and Pest Control - 821.4 Agricultural Products - 922.2 Mathematical StatisticsDOI:10.3969/j.issn.10.z1.044Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:23Title:Simulation of operator head injury and protection for engineering vehicles in rollover accidentAuthors:Si, Junde (1); Wang, Guoqiang (1); Cui, Guohua (2); Wang, Jixin (1); Zhang, Yingshuang (1) Author affiliation:(1) College of Mechanical Science and Engineering, Jilin University, Changchun 130022, C (2) Institute of Mechanical Engineering, Hebei Engineering University, Handan 056038, China Corresponding author:Zhang, Y.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:67-70Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:When a certain engineering vehicle roll in the sloped area, the impact of the cab interior structure against operator&s head will probably cause a serious hurt. As a result, the research on the mechanical response characters of operator&s head in the collision accidents was practically significant. In this paper, 3-D finite element modeling technology was adopted to develop the adult headform. The headform was used to analyze the impact on the cab interior structure with virtual test method, and the effect of different densities and thickness of the polyurethane foam on the head injury evaluation criteria was compared. The result showed that the polyurethane foam of 18 mm thickness in the cab interior could effectively decrease the head injury value in the secondary collision when the operator was involved in engineering vehicle roll-over. The HIC(d) value decreases as an increase of the foam thickness, and the effect of the foam density variable is nonlinear, a second order parabolic shape can be identified.Number of references:16Main heading:ModelsControlled terms:Accidents - Dynamic response - Flight dynamics - Rigid foamed plastics - Three dimensional - VehiclesUncontrolled terms:Engineering vehicles - Evaluation criteria - Finite element modeling - Foam densities - Foam thickness - Head impact - Head injuries - Interior structure - Mechanical response - Polyurethane foam& - Rollover accidents - Second orders - Simulation - Virtual testsClassification code:408.1 Structural Design, General - 432 Highway Transportation - 817.1 Polymer Products - 902.1 Engineering Graphics - 914.1 Accidents and Accident Prevention - 931.1 MechanicsDOI:10.3969/j.issn.10.z1.015Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:25Title:Mathematical models of crossflow grain drying and their applicationsAuthors:Hu, Zhichao (1); Wang, Haiou (1); Xie, Huanxiong (1); Wu, Feng (1); Chen, Youqing (1); Cao, Shifeng (1) Author affiliation:(1) Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China Corresponding author:Hu, Z.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:76-82Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:Mathematical models of crossflow grain drying and their applications were overviewed with the intention of providing some references for the similar research in our country. Three mathematical models for crossflow drying by researchers of USA were introduced in detail, including Bakker-Arkema PDE(partial differential equation) model, two-dimensional dynamic PDE model, DP(distributed parameter) process model. Model predictive control method and its applications in continuous crossflow grain dryer were also presented in this paper. DP process model, as a simplified form of PDE model, can perfectly simulate the drying process. DP model has simple analog computational procedure, being fitting for the online control of grain dryer. Based on the DP process model and MPC control algorithm, American researchers developed a model-predictive controller which was successfully applied on crossflow tower-dryer.Number of references:36Main heading:Mathematical modelsControlled terms:Algorithms - Curing - Differential equations - Dryers (equipment) - Drying - Model predictive control - Predictive control systems - ResearchUncontrolled terms:Computational procedures - Control algorithms - Cross flows - D-p model - Distributed parameter - Drying process - Grain - Grain drying - Model Predictive Control methods - On-line controls& - PDE model - Predictive controller - Process modelClassification code:921.2 Calculus - 921 Mathematics - 901.3 Engineering Research - 815.1 Polymeric Materials - 802.1 Chemical Plants and Equipment - 732 Control Devices - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 642.1 Process HeatingDOI:10.3969/j.issn.10.z1.017Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:79Title:Seed characteristics and hard seed broken methods of Sophora alopecuroides and Thermopsis lanceolataAuthors:Wang, Jin (1); Lü, Biao (1); Xiao, Zhanwen (1); Yan, Jizhi (1); Zhang, Youfu (1) Author affiliation:(1) College of Agronomy, Hexi University, Zhangye 734000, China Corresponding author:Lü, B.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:406-410Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:The sharp, color and surface state of Sophora alopecuroides and Thermopsis lanceolata seeds collected from desert edge were researched in laboratory. The results showed that sharp, color, appearance had significant difference. Strong degree and hard seed rate were higher, but the water content was lower. The length of Sophora alopecuroides was larger than that of Thermopsis lanceolata, but the bulk density and TGW of Thermopsis lanceolata seeds were higher than that of Sophora alopecuroides seeds. The width, thickness and bulk density had no significant difference. Hard seed and non-hard seed were all existed together in fresh and pure bean seeds. The best hard seed release methods for Sophora alopecuroides and Thermopsis lanceolata were treating seeds using 90% (v/v) sulfuric acid for 70min and 120min respectively. Sophora alopecuroides and Thermopsis lanceolata seeds had higher materials convert efficiency and reached to 77.94% and77.28%, respectively. Sophora alopecuroides and Thermopsis lanceolata seeds didn&t germinate until 21 h and the lowest water requirement was 151.05% and 151.71%, respectively. They needed more water to germinate. Sophora alopecuroides seeds had a fast germination speed and needed 40 h to reach maximal germination value, and Thermopsis lanceolata needed 56 h to reach that value.Number of references:19Main heading:SeedControlled terms:Research - Sulfuric acid - Water contentUncontrolled terms:Bulk density - Germination rates - Seed rate - Seed release - Sophora alopecuroides - Surface state - Thermopsis lanceolata - Water requirementsClassification code:444 Water Resources - 804.2 Inorganic Compounds - 821.4 Agricultural Products - 901.3 Engineering ResearchDOI:10.3969/j.issn.10.z1.072Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:62Title:Influence of different film packaging on storage and shelf-life quality of Pumelo fruitAuthors:Li, Jiazheng (1); Bi, Dapeng (1) Author affiliation:(1) Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, National Engineering and Technology Research Center for Preservation of Agricultural Products, Tianjin 300384, China Corresponding author:Li, J.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:315-319Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:To enhance the cool storage effects by package with proper film, fruits of Pumelo (Citrus grandis (L.) Osbeck. cv. Miyou) were individually packed with micro-perforation film and common PE (polyethylene) films with different thickness, and stored at 5-6&C for 4 months and then 15-days shelf-life at room temperature. O&inf&2&/inf& and CO&inf&2&/inf& composition in headspace of different bags were checked, and fruit weight loss, content of chemical quality attributes (total soluble solid, titratable acid and vitamin C), firmness and ethanol content of flesh were measured. There were higher O&inf&2&/inf& and lower CO&inf&2&/inf& content in headspace of packaging with micro perforations film. During the experimental period, pumelo packed with micro perforations film were characterized with highest weight losses, but contained highest chemical quality attributes, lowest firmness of flesh, the least ethanol content, and enjoyed best flavor among all treatments. After 15-day shelf-life, the weight losses and ethanol content of fruit in all treatment increased sharply, meanwhile the TSS and TA decreased rapidly. Packaging with micro-perforation film is a good choice to keep better storage and shelf-life quality of pumelo.Number of references:27Main heading:Quality controlControlled terms:Ethanol - Fruits - PackagingUncontrolled terms:Chemical quality - Citrus grandis - Cool storage - Different thickness - Fruit weight loss - Headspaces - Micro-perforations - Room temperature - Shelf life - Storage& - Titratable acid - Total soluble solids - Vitamin C - Weight lossClassification code:523 Liquid Fuels - 694.1 Packaging, General - 821.4 Agricultural Products - 913.3 Quality Assurance and ControlDOI:10.3969/j.issn.10.z1.055Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:29Title:Soil moisture distribution in different cultivating systems in mountainous area of south Ningxia Hui Aotonomous RegionAuthors:Zhang, Lei (1); Zhang, Xiaoyu (1); Wei, Jianguo (1); Han, Yingjuan (2); Cao, Ning (2) Author affiliation:(1) Ningxia Key Lab. for Meteorological Disaster Prevention and Reduction, Yinchuan 750002, C (2) Ningxia Meteorological Science Institute, Yinchuan 750002, China Corresponding author:Zhang, L.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:104-108Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:The study of soil moisture distribution of dry land crops can supply scientific evidences for water resource use. The article studied dynamic changes of soil water of five kinds dry land- winter wheat, flax, potato, alfalfa and natural grass in different stages. The results showed that temporal variations of soil moisture on different dry land crops were similar. All five kind crops include "soil moisture content raising period" and "soil moisture content declining period", that dividing line were at the middle of July. Soil moisture of annual crops (as winter wheat, flax and potato) were more higher perennial crop (as alfalfa and natural grass) in whole growing time. The soil moisture vertical distribution of winter wheat, flax and potato were &topsoil highness, subsoil lowness&, alfalfa and natural grass in reverse. Topsoil moisture movement was obvious, subsoil moisture movementwas inconspicuous all dry crops. In growing time, rainfall didn&t satisfy the all crops needs. The raising soil moisture in autumn is pivotal for harvest of dry crops.Number of references:15Main heading:Moisture determinationControlled terms:Crops - Cultivation - Flax - Flow of water - Linen - Moisture meters - Soil moisture - Underwater soils - Water resources - YarnUncontrolled terms:Declining period - Dry land - Dynamic changes - Moisture movement - Mountainous area - Natural grass - Perennial crops - Raising period - Scientific evidence - Soil moisture content& - Soil moisture distribution - Soil water - Southern Ningxia - Temporal variation - Vertical distributions - Winter wheatClassification code:944.1 Moisture Measuring Instruments - 821.4 Agricultural Products - 821.3 Agricultural Methods - 944.2 Moisture Measurements - 819 Synthetic and Natural F Textile Technology - 483.1 Soils and Soil Mechanics - 444 Water Resources - 631.1.1 Liquid DynamicsDOI:10.3969/j.issn.10.z1.021Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:63Title:Effects of ambient temperatures on viscometric change of ultra-high temperature processed cow milkAuthors:Hang, Feng (1); Guo, Benheng (1); Ren, Lu (1); Gong, Guangyu (1); Wang, Yinyu (1); Chen, Wei (2); Zhang, Hao (2) Author affiliation:(1) State Key Laboratory of Dairy Biotechnology, Technology Center, Bright Dairy and Food Company Limited, Shanghai 200436, C (2) State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China Corresponding author:Guo, B.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:320-324Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:The viscosity of ultra-high temperature (UHT) processed cow milk changing with temperature in the range of 20&C to 45&C were determined by TA AR-G2 rheometer and the data were fitted by 1stOpt1.5 Pro software, in order to evaluate the applicability of Arrhenius model to describe the course, explore the influence of ambient temperature on the shelf-life based on Stokes& law and establish theoretical basis of accelerated shelf-life testing for UHT milk. The results showed that, in the range of 20&C to 45&C, the viscosities of UHT milk slightly increased from 20&C to 25&C and then significantly decreased as the temperature rising, however gradually increased during cooling from 45&C to 20&C. The fittness of Arrhenius model to describe the viscosity changes during heating was significantly affected by weak gel formed between K-carrageenan and casein. When temperature was elevated to 25&C, the weak gel was disrupted and thereafter the viscosity changes of the system obeyed Arrhenius model well (R&sup&2&/sup&=908). The viscosity changes during cooling also followed Arrhenius model (R&sup&2&/sup&=0.942). Hence, Arrhenius model is fit for describing the temperature-dependency viscosity changes in the UHT cow milk.Number of references:21Main heading:ViscosityControlled terms:Gels - Temperature - ViscometersUncontrolled terms:Ambient temperatures - AR-G2 rheometer - Arrhenius models - Carrageenans - Cow milk - Shelf life - Stokes& law - Temperature dependencies - Temperature rising - Theoretical basis& - UHT milk - Ultrahigh temperature - Weak gelClassification code:631.1 Fluid Flow, General - 641.1 Thermodynamics - 804 Chemical Products Generally - 943.3 Special Purpose InstrumentsDOI:10.3969/j.issn.10.z1.056Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:76Title:Optimization of preparation process of cold brew tea by explosion puffing drying at variable temperature and pressure differenceAuthors:He, Xinyi (1); Liu, Jinfu (1); Huang, Zonghai (1); Nie, Xiaohua (3); Zhang, Lijin (1); He, Fengchao (1); Chen, Ying (1) Author affiliation:(1) Department of Food Science, Tianjin Agricultural University, Tianjin 300384, C (2) Tianjin Agricultural Products Processing Scientific Innovation and Achievement Transform Base, Tianjin 300384, C (3) College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China Corresponding author:Liu, J.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:388-393Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:In order to optimize the explosion puffing drying preparation process of cold brew tea at variable temperature and pressure difference, the influence of the moisture content, freezing treatment times and puffing temperature on the cold brew tea was studied. Single factor experiments and orthogonal experiments were carried out, and the experimental results indicated that the importance of the affecting factors were in the order of the moisture content, freezing treatment times and puffing temperature. The optimum explosion puffing drying preparation process was designed as follows: 50% of moisture content, three times freezing treatments at -18&C, 24 h each time, puffing treatment at 115&C. Under this optimized process condition, the cold brew tea was obtained and then soaked for another 30min at room temperature. Finally, the determination of the biochemistry ingredients of cold brew tea solution suggested that the water extract mass fraction, caffine mass fraction, tea polyphenols mass fraction, free amino acid mass fraction, water-soluble saccharides mass fraction reached to 16.45%, 0.84%, 11.45%, 0.93%, 2.47%, respectively. Results showed that biochemistry ingredients of cold brew tea prepared by explosion puffing drying at variable temperature and pressure difference were easy to extract. This research provides technical support for industrialization production of the cold brew tea.Number of references:20Main heading:Parameter estimationControlled terms:Amino acids - Biochemistry - Curing - Drying - Experiments - Explosions - Explosives - Freezing - Moisture - Moisture determination& - Optimization - Phenols - Pressure control - Solvent extraction - SugarsUncontrolled terms:Affecting factors - Cold brew tea - Free amino acids - Freezing treatments - Mass fraction - Moisture contents - Optimized process - Orthogonal experiment - Preparation process - Pressure differences& - Puffing - Room temperature - Tea polyphenols - Tea solution - Technical support - Variable temperature - Water extractsClassification code:944.2 Moisture Measurements - 921.5 Optimization Techniques - 901.3 Engineering Research - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.3 Chemical Operations - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801.2 Biochemistry - 731.3 Specific Variables Control - 731.1 Control SystemsDOI:10.3969/j.issn.10.z1.069Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:26Title:Effects of ground coverage measure and water quality on soil water salinity distribution and helianthus yieldAuthors:Bi, Yuanjie (1); Wang, Quanjiu (1); Xue, Jing (1) Author affiliation:(1) Institute of Water Resources and Hydro-Electric Engineering, Xi&an University of Technology, Xi&an 710048, C (2) State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Acad. of Sci., Yangling 712100, China Corresponding author:Wang, Q.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:83-89Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:In order to analyze the effect of soil surface mulching measures and different salinity of irrigation water on soil water salinity distribution and helianthus yield, soil water and salinity distributional characteristics, part of physiologic index and yield of helianthus were studied with different salinity of irrigation water under the conditions of straw mulching and plastic mulching compared with the treatments without ground coverage. The results showed that the measures of straw mulching and plastic mulching could decrease soil evaporation effectively and depress surface salt accumulation degree of helianthus taproot layer regardless with fresh water or saline water for irrigation. Under different ground coverage measure, the change rule of soil average moisture content of helianthus taproot layer with the salinity of irrigation water was different. And the yield of helianthus of the treatment with ground coverage measure was usually larger than that without ground coverage under the same salinity of irrigation water. As a result, it is necessary to take ground coverage measure when irrigating with saline water.Number of references:16Main heading:Saline waterControlled terms:Irrigation - Salinity measurement - Soil moisture - Underwater soils - Water content - Water pollution - Water quality - Water supplyUncontrolled terms:Fresh Water - Helianthus - Irrigation waters - Moisture contents - Mulching measures - Plastic mulching - Soil surfaces - Soil water - Straw mulchingClassification code:444 Water Resources - 446.1 Water Supply Systems - 453 Water Pollution - 453.2 Water Pollution Control - 483.1 Soils and Soil Mechanics - 821.3 Agricultural MethodsDOI:10.3969/j.issn.10.z1.018Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:32Title:Effects of water and nitrogen conditions on the diurnal variation of photosynthesis and yield of cucumber in greenhouseAuthors:Li, Yinkun (1); Wu, Xueping (1); Wu, Huijun (1); Wu, Qipu (1); Zhang, Yancai (2); Li, Ruonan (2); Wang, Liying (2) Author affiliation:(1) Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agricultural of China, Institute of Agricultural Resource and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, C (2) Institute of Agricultural Resource Environment, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang 050051, China Corresponding author:Wu, X.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:122-129Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:The major variation of greenhouse environmental factors and diurnal variation of photosynthesis of cucumber leaves and its relationship with yield were studied by designing different irrigation and nitrogen treatments in the greenhouse of North China. The results showed that the diurnal variation curves of PAR, Ta, RH and other environmental factors had a single-peak and the net photosynthetic rate and stoma conductance of cucumber leaves under different water and nitrogen conditions had two peaks. There was an obvious midday depression of photosynthesis and the stomata were the main limiting factors. The relationship between photosynthetic rate and yield of cucumber showed a quadratic curve. With moderately reduced water and nitrogen application rate, the net photosynthetic rate of cucumber did not decrease significantly, while the instantaneous leaf water use efficiency increased significantly. In our experiment, the highest yield was achieved with an irrigation quantity of 5190 m&sup&3&/sup&/hm&sup&2&/sup& and nitrogen amount of 600 kg/hm&sup&2&/sup&. Such practice can make the yield increase by 4.21 percent compared to the habitual water and nitrogen treatment. The general analysis showed that the optimization of water and nitrogen treatment resulted in a more rational management. This practice not only achieved a higher net photosynthetic rate and water use efficiency, but also a higher cucumber yield.Number of references:37Main heading:Nitrogen fertilizersControlled terms:Greenhouses - Irrigation - Nitrogen - Photosynthesis - Water supply - Water treatmentUncontrolled terms:Cucumber - Diurnal variation - Environmental factors - Leaf water - Limiting factors - Net photosynthetic rate - Nitrogen application rates - Nitrogen treatment - North China - Photosynthetic rate& - Quadratic curves - Water use efficiency - Yield - Yield increaseClassification code:445.1 Water Treatment Techniques - 446.1 Water Supply Systems - 741.1 Light/Optics - 804 Chemical Products Generally - 821.3 Agricultural Methods - 821.6 Farm Buildings and Other StructuresDOI:10.3969/j.issn.10.z1.024Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:46Title:Reconstructing MODIS vegetation index time-series data of cropping areaAuthors:Hou, Dong (1); Pan, Yaozhong (1); Zhang, Jinshui (1); Liang, Shunlin (3); Zhu, Wenquan (1); Li, Le (1); Li, Lingling (1) Author affiliation:(1) College of Resource Sciences and Technology, Beijing Normal University, Beijing 100875, C (2) State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, C (3) Department of Geography, University of Maryland, College Park, MD 20742, United States Corresponding author:Hou, D.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:206-212Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:As an excellent dataset which reflects the coverage of vegetation on earth surface continuously, MODIS vegetation index time series have already become an important data source in crop measurement by remote sensing. However, there are always some noises caused by atmosphere variability and sensor angle in MOD13 vegetation product. For this reason, the time series of MOD13 should be reconstructed before application. According to phenology and cropping system, time series were separated into different periods related to the growth process of crops. Then, the vegetation indices in each period were reconstructed based on asymmetric gaussian function. After all periods were reconstructed, the indices in overlapping range between two adjacent periods were optimized. The above two procedures were repeated a certain times to restore the indices affected by noises. The proposed method were applied to reconstruct the NDVI time series of cropping area lies between Tong zhou District, Beijing, and Baoding City, HeBei Province with MOD13 data acquired in 2005. The same data were reconstructed by two step Savitzky-Golay filter. The comparison between two results show that the noise in time series can be evaluated and restored accurately. Meantime, the low vegetation indices caused by double cropping system are reserved effectively. The whole reconstructed NDVI time series can indicate vegetation coverage accurately.Number of references:18Main heading:VegetationControlled terms:Crops - Forestry - Gaussian distribution - Radiometers - Remote sensing - Restoration - Time seriesUncontrolled terms:Cropping area - Cropping systems - Gauss function - MODIS time series reconstruction - PenologyClassification code:402 Buildings and Towers - 409 Civil Engineering, General - 731.1 Control Systems - 821 Agricultural Equipment and M Vegetation and Pest Control - 922.2 Mathematical Statistics - 944.7 Radiation Measuring InstrumentsDOI:10.3969/j.issn.10.z1.038Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
&RECORD 18&
Accession number:10Title:Current situation and development trend of mechanization of field experimentsAuthors:Shang, Shuqi (1); Yang, Ranbing (1); Yin, Yuanyuan (1); Guo, Peiyu (2); Sun, Qun (2) Author affiliation:(1) College of Electromechanical Engineering, Qingdao Agricultural University, Qingdao 266109, C (2) China Agricultural University, Beijing 100083, China Corresponding author:Shang, S.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:5-8Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:Mechanization of field experiments is the only way to improve crop breeding and seed propagation effects. It can not only improve the efficiency of field trials, save investment, shorten the breeding cycle, but also provide a better technology and equipment for the breeding of new varieties and propagation. In order to improve the breeding of field tests of the operating efficiency of machinery and precision, to the breeders and seed base to provide the best machinery, equipment and apparatus, in the joint efforts of international breeders, agronomists and mechanical scientists, the International Association on Mechanization of Field Experiments (IAMFE) was established in 1964. At the beginning of this paper, a brief introduction of the history of the IAMFE and the China Branch was given. Then the fields engaged was described, the scope of the study, the achievements and the international development of IAMFE were discussed in detail. Finally, a prospect of the development of the IAMFE was given.Number of references:14Main heading:EquipmentControlled terms:Agricultural machinery - Experiments - MechanizationUncontrolled terms:Breeding - Current situation - Development trends - Field experiment - Field test - Field trial - International Association - International development - Operating efficiency - Plot combine& - Plot seeder - Seed propagationClassification code:601 Mechanical Design - 821.1 Agricultural Machinery and Equipment - 901 Engineering Profession - 901.3 Engineering ResearchDOI:10.3969/j.issn.10.z1.002Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
&RECORD 19&
Accession number:49Title:Extracting winter wheat planting area based on cropping system with MODIS dataAuthors:Sui, Xueyan (1); Zhu, Zhenlin (1); Li, Shaokun (2); Ming, Bo (2); Zhang, Xiaodong (1); Sun, Xiaoqing (1) Author affiliation:(1) Shandong Academy of Agriculture Sciences, Jinan 250100, C (2) Key Laboratory of Crop Physiology and Production Ministry of Agriculture, Institute of Crop Sciences, Chinese Academy of Agriculture Sciences, Beijing 100081, C (3) Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Center of Crop High-Yield Research, Shihezi 832003, China Corresponding author:Li, S.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:225-229Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:Winter wheat is one kind of important crop in China. Its planting area is one key element to explain yield change. To obtain winter wheat planting area as soon as possible can provide scientific reference for our country to make related policy. Based on the cropping system in Shandong Province, winter wheat is divided into two kinds "winter wheat sowed by machine-maize" and "labour broadcast winter wheat-rice". Using MODIS data, NDVI characters of winter wheat, garlic, greenhouse vegetable, from sowing till overwintering stage were analyzed. Together with NDVI characters of former stubble crops in middle September, extracting requirements were set up for winter wheat planting area which was sown by machine this year. In view of the spectrum similarity between rice wheat and greenhouse vegetable from sowing stage till overwintering stage, rice wheat planting area of former year was extracted relying on the character of biomass rapid growth at jointing stage. Because of the "labour broadcast winter wheat-rice" cropping system is very fixed in Shandong Province, then the rice wheat planting area of former year can take the place of the rice wheat planting area this year. Two kinds of winter wheat area were merged, and tested by 284 groups of located spots data, with the accuracy reached 94.01%. It is feasible to extract winter wheat area before overwintering stage, and the time is 4 months earlier than using jointing stage NDVI.Number of references:22Main heading:CropsControlled terms:Ecology - Greenhouses - Radiometers - Remote sensing - VegetablesUncontrolled terms:Area - Classification - Rice wheat - Shandong province - Winter wheatClassification code:454.3 Ecology and Ecosystems - 731.1 Control Systems - 821.4 Agricultural Products - 821.6 Farm Buildings and Other Structures - 944.7 Radiation Measuring InstrumentsDOI:10.3969/j.issn.10.z1.041Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
&RECORD 20&
Accession number:67Title:Variation of postmortem lamb quality and its influencing factors in different store temperaturesAuthors:Li, Ze (1); Jin, Ye (1); Ma, Xia (1) Author affiliation:(1) College of Food Science and Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China Corresponding author:Li, Z.Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:338-342Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:In order to research the effect of AMPK activation degree on glycolysis, and further on meat quality, the mechanism of postmortem maturation was analyzed. The postmortem lamb preservated at 0, 4 and 15&C, AMPK activity, muscle glycogen, pH value and lactic acid were measured at 0-24 h after preservation, and shearing force, cooked meat percentage, myofibril fragmentation index (MFI) and meat color were measured at 0-7 d after preservation. The results showed that the lamb muscle which were preservated at 15&C had the maximum AMPK activity (P&0.05), fast decreasing speed of glycogen and pH value, more lactic acid accumulation, rapid speed of shearing force rally and cooked meat percentage drawdown, higher MFI and worse meat color. This showed much higher preservation temperature, more easily AMPK activation and rapidly glycolysis and mature speed of postmortem lamb.Number of references:16Main heading:MeatsControlled terms:Body fluids - Lactic acid - Muscle - Pathology - pH - Shearing - Temperature controlUncontrolled terms:AMPK - AMPK activity - Cooked meat - Fragmentation index - Influencing factor - Meat color - Meat quality - pH value - Postmortem maturation - Shearing force& - StorageClassification code:461 Bioengineering and Biology - 604.1 Metal Cutting - 731.3 Specific Variables Control - 801.1 Chemistry, General - 801.2 Biochemistry - 822.3 Food ProductsDOI:10.3969/j.issn.10.z1.060Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
&RECORD 21&
Accession number:27Title:Analysis of factors on impacting potential productivity of winter wheat in Huanghuaihai agricultural area over 30 yearsAuthors:Wang, Hong (1); Chen, Fu (1); Shi, Quanhong (1); Fan, Shichao (1); Chu, Qingquan (1) Author affiliation:(1) College of Agriculture and Biotechnology, China Agriculture University, Beijing 100193, China Corresponding author:Chu, Q.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:90-95Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:In this paper, light-temperatural and meteorological potential productivity of wheat were analyzed in 21 typical sites from seven sub-zones of Huanghuaihai agricultural area in the period of
(C1 scenario) and
(C2 scenario) by using AEZ (Agro-Ecological Zone) model. Meanwhile, the effects of climate conditions and cultivar on the wheat potential productivity were evaluated in order to find out the reason for the variability of productivity in different zones over times. The results showed the potential productivity on light-temperatural and meteorological level increased by 3.96 t/hm&sup&2&/sup& and 3.32 t/hm&sup&2&/sup& from
(C1 scenario) to
(C2 scenario), respectively. The increase of potential productivity was higher in the south and east areas than that in the north and west. The improved breeds (0.44) played a more important role in increasing light-temperatural potential yield than meteorology (0.33) and interaction between them (0.22). The increase of light-temperatural potential mainly depended on the improved breeds in north and east areas, where the climate c while in south and west area the improving of potential productivity was due to both the improved breeds and advantageous climate. In Huanghuaihai agricultural area, water is the limited factor for meteorological potential productivity because of less precipitation during the period from jointing to heading.Number of references:12Main heading:ProductivityControlled terms:Crops - EcologyUncontrolled terms:Agricultural areas - Agro-ecological zones - Climate condition - Climatic changes - Potential productivity - Potential yield - Winter wheatClassification code:454.3 Ecology and Ecosystems - 821.4 Agricultural Products - 913.1 Production EngineeringDOI:10.3969/j.issn.10.z1.019Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
&RECORD 22&
Accession number:18Title:5XS series color sorting cottonseeds parameter optimizationAuthors:Sun, Xiaoli (1); Kan, Za (1); Li, Jingbin (1); Zhang, Ruoyu (1) Author affiliation:(1) College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China Corresponding author:Kan, Z.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:42-45Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:To explore the 5XS series color sorting cottonseeds machine working parameters of the best match to the color sorting machine precision, with the ratio and cotton seed crushing rate as the evaluation indexes, the single factor and orthogonal tests were conducted with different background plate angle, work pressure, color sensitivity and seed flow values. Single factor tests showed that the effects of background plate angle, work pressure and color sensitivity on color accuracy and carryover ratio were significant. Orthogonal tests showed that with background plate angle 135&, working pressure 250 kPa, sensitivity 242, the color sorting accuracy was up to 99.5%, and the carryover ratio was 1:0.39.Number of references:9Main heading:ColorControlled terms:Agricultural machinery - OptimizationUncontrolled terms:Best match - Color accuracy - Color sorting - Cottonseeds - Crushing rates - Evaluation index - Machine precision - Machine working - Orthogonal test - Out of proportion& - Parameter optimization - Work pressures - Working pressuresClassification code:741.1 Light/Optics - 821.1 Agricultural Machinery and Equipment - 921.5 Optimization TechniquesDOI:10.3969/j.issn.10.z1.010Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
&RECORD 23&
Accession number:11Title:Design of insert-metering device for subdistrict breeding seederAuthors:Jiang, Feng (1); Chen, Haitao (1); Wang, Yecheng (1) Author affiliation:(1) College of Engineering, Northeast Agricultural University, Harbin 150030, China Corresponding author:Chen, H.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:9-12Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:In order to improve the mechanization level of breeding experiment, reduce labor intensity, according to the demand of the subdistrict breeding seeder, a metering device named insert-metering device for subdistrict breeding seeder was designed. The performance of the metering device was tested by the different working speeds and inter-plant spacing. Results showed that while the working speed was from 0.4 m/s to 0.6 m/s, inter-plant spacing was 8.5cm, the acceptability rate was equal to or greater than 82.45%, the multiples rate was equal to or less than13.38%, the miss rate was equal to or less than 4.16%, which all met the requirement on the h while inter-plant spacing was 4.0 cm, the acceptability rate was equal to or greater than 65.25%, met the requirement on the first class product, the multiples rate was equal to or less than 13.87%, met the requirement on the highest class product, the miss rate was equal to or less than 19.50%, met the requirement on the first class product. The experiment results indicated that the structure and breeding performance of metering device satisfied the agriculture requirement.Number of references:14Main heading:ExperimentsControlled terms:Agricultural machinery - Agriculture - Equipment - Machine designUncontrolled terms:Breeding performance - First class products - Inserted - Labor intensity - Metering devices - Miss-rate - Performance tests - Plant spacing - Subdistrict breeding - Working speedClassification code:601 Mechanical Design - 821 Agricultural Equipment and M Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 901 Engineering Profession - 901.3 Engineering ResearchDOI:10.3969/j.issn.10.z1.003Database:CompendexCompilation and indexing terms, Copyright 2010 Elsevier Inc.
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Accession number:36Title:Application of chloride tracer method to study replenishment ratio of precipitation in desertAuthors:Liu, Xiaoyan (1); Chen, Jiansheng (2); Sun, Xiaoxu (3) Author affiliation:(1) College of Civil Engineering, Hohai University, Nanjing 210098, C (2) Reserch Institute of Science and Technology, Hohai University, Nanjing 210098, C (3) College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China Corresponding author:Liu, X.&& && ()&&& Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural EngineeringAbbreviated source title:Nongye Gongcheng XuebaoVolume:26Issue:SUPPL. 1Issue date:October 2010Publication year:2010Pages:146-149Language:ChineseISSN:CODEN:NGOXEODocument type:Journal article (JA)Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, ChinaAbstract:Two profiles, located in Wuhaizi and Nuoertu, respectively, were sampled to evaluate the annual groundwater recharge in southeast of Badain Jaran Desert using method of chloride mass balance. The mean annual recharge calculated was 0.81 mm/a and 1.24 mm/a, which account for 0.9% and 1.4% of the mean annual precipitation, respectively. This implies that the direct recharge through the unsaturated zone is negligible. Thus, the local modern precipitation infiltration recharge is not the main replenishment source of groundwater.Number of references:21Main heading:Replenishment (water resources)Controlled terms:Chlorine compounds - Landforms - Moisture determination - Rain - Recharging (underground waters) - Seepage - Soil mechanics - Soil moistureUncontrolled terms:Badain Jaran De