搜索结果: 1-15 共查到“农业工程 efficiency”相关记录17条 . 查询时间(0.046 秒)
Micro-nano-engineered nitrogenous bone biochar developed with a ball-milling technique for high-efficiency removal of aquatic Cd(II), Cu(II) and Pb(II)
Micro-nano-engineered nitrogenous bone biochar
2023/6/5
A cost-effective and eco-friendly engineering method to improve biochar’s physicochemical and sorption performance is critical in various environmental applications. In this study, micro-nano-engineer...
不同种植模式麦田水资源利用率及边际效益分析（Effects of Different Planting Patterns on Water Use Efficiency and Marginal Profits of Winter Wheat）
冬小麦 种植模式 水资源利用率
2010/12/29
选用山东省当前推广面积较大的“20+40”大小行、“20+40”沟播、“20+40”垄作以及常规等行距模式，研究不同种植模式对冬小麦农田水资源利用效率和边际效益的影响。结果表明，等行距、大小行、沟播和垄作种植模式的最大产量分别为7778.6、7624.8、8684.6和8893.7kg/hm2，表明沟播和垄作都具有提高冬小麦产量的潜力，但在获得最大产量时，垄作的蒸散量比沟播提高了76.6mm。...
斜轴式液压变压器效率特性分析（Research on Efficiency Characteristic of Angle Type Hydraulic Transformer）
液压变压器 变压比 效率特性
2009/12/28
建立了斜轴式液压变压器的排量模型、流量模型、转矩模型和效率模型；在此基础上，绘制了液压变压器的等效率曲线图，揭示了斜轴式液压变压器的效率特性。理论分析与试验结果表明：斜轴式液压变压器在正常工作情况下理论总效率可达到70%左右，而且高效区的范围较宽；液压变压器的总效率随着负载口实际流量或缸体转速的增加有先增大后减小的变化趋势，随着负载口压力或配流盘转角的增加也呈先增大后减小的变化趋势。
基于籽粒运动的多维振动筛分效率分析（Analysis on Efficiency of the Dimensional Vibration Sieve Based on the Movements of Grains）
籽粒 多维运动 物料特性 分散性衡量指标
2009/11/3
在对现有往复式振动筛面上籽粒的非线性跳动进行理论分析的基础上，利用LS-DYNA程序研究了往复式和两种新型多维运动筛面上籽粒的运动情况，并提出分散性衡量指标以反映籽粒在筛面上的分散情况，以此对3种筛面的筛分效率进行对比分析。研究中依据筛面与籽粒的实物结构和物料特性建立分析模型，考虑籽粒与筛面及籽粒间的摩擦、碰撞作用，求解得出籽粒的运动规律。结果表明两种新型多维筛面运动形式有利于提高筛分效率。
The Effect of Soil Profile Depth on Fallow Efficiency Under Ankara Conditions
Fallow efficiency profile depth nitrogen fertilization
2009/1/14
The aim of this study was to compare the fallow efficiencies of shallow and deep soil profiles and to examine the effects of nitrogen fertilization on the grain yields in continuous wheat and fallow-w...
Water-Use Efficiency（WUE）and Change in the Yield-Response Factor（Ky）of Cotton Irrigated by an Irrigation Drip System
Water-Use Efficiency (WUE) Yield-Response Factor（Ky）of Cotton
2009/1/14
This study was conducted to investigate the effect of water-use efficiency and changes in the yield-response factor of cotton irrigated with an irrigation drip system. The amount of water applied was ...
Efficiency Indicators in Irrigation Projects' Performance Evaluation: A Case Study on the Bursa Groundwater Irrigation Project
Groundwater irrigation project performance evaluation physical efficiency economic efficiency institutional efficiency
2009/1/13
Using the 1992-1996's irrigation results, 15 different physical, economic and institutional efficiency indicators were applied to the Bursa groundwater irrigation project to evaluate the performance ...
Technical and scale efficiency of corporate farms in Slovakia
corporate farms technical efficiency scale efficiency data envelopment analysis
2014/3/31
The paper presents results of the analysis of technical and scale efficiency of 1 147 Slovak corporate farms (agricultural co-operatives and commercial farming companies) in 2000. The objective of the...
Efficiency development of Czech foreign trade in high-technology products and high-value agricultural products
international trade foreign trade competitiveness high-technology trade agricultural trade
2014/3/29
High efficiency of foreign trade is achieved in export of the commodities that are not only price competitive. The high-technology manufactures usually have the highest value added. The same is true f...
Labour productivity as a factor forming the economic efficiency and competitive ability of the country
labour productivity industry Czech Republic statistical processing development trends
2014/3/29
The paper is focused on the evaluation of labour productivity in industry as a whole and in the selected branches in the Czech Republic in 1997–2001. The labour productivity index for employees is the...
Economic efficiency of agricultural enterprises in the system of organic farming
organic agriculture development of organic agriculture support of organic agriculture
2014/3/29
The aim of this presentation is to introduce partial results of this research project aimed to the efficiency of businesses working with the organic systems. The proposal of mesures will be formed wit...
Economic efficiency of agricultural enterprises in the system of organic farming
organic agriculture development of organic agriculture support of organic agriculture
2014/3/29
The aim of this presentation is to introduce partial results of this research project aimed to the efficiency of businesses working with the organic systems. The proposal of mesures will be formed wit...
Monitoring and project evaluation as a principle of following efficiency of adopted measures
monitoring system efficiency evaluation of measures project realisation control indicators outputs results impacts objectives, risks
2014/3/29
The contribution supplies an outline of indicators, through which benefits from projects will be followed, that are prepared for usage in the LFA areas. It will be necessary to use the monitoring syst...
Comparison of the value added development in the agricultural and food sectors and the efficiency of its creation
national economy production of foodstuffs agriculture, value added ntermediate consumption fixed assets
2014/3/29
The article summarises the results of the analysis of value added (VA) in agriculture and food industry and the share of intermediate consumption in the value added. The results show that during 1993–...
Evaluation of common projects efficiency in agriculture
human capital education quantity and quality of education technological competency competitive advantage
2014/3/29
The quality of economic education is one of the economic growth factors because its increasing leads to a higher level of human resources. The efficiency of education is most often defined as the rela...