cropping efficiency 中文意思是什麼
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Study on productivity and efficiency of six different multiple cropping systems
不同復種方式的生產力和效益研究 -
Examples of how intensified cropping systems improve plant nutrition, increase water use efficiency, increase nutrient use efficiency and build soil organic matter are discussed
討論了集約種植制度和如何改善植物營養、提高水分利用率、提高養分利用率和積累土壤有機質的實例。 -
/ based on the trends of present cropping development and irrigation efficiency increase in the region, water supply can meet irrigation by 89 % in 2010, 75 % in 2020 and 70 % in 2030 to crop ' s water requirement under normal condition. water supply can meet irrigation by 100 % in 2010, 88 % in 2020 and 83 % in 2030 to 85 % of crop ' s water requirement under normal condition. the situation of water shortage in the region is more austere in dry year
3 ）按目前種植業發展趨勢並考慮到灌溉效率的提高，平水年在100充足灌溉方式下， 2010年、 2020年和2030年可供水量對灌溉的滿足率分別為89 、 75和70 ；在85虧缺灌溉方式下， 2010年供水可以滿足需要， 2020年和2030年供水量對灌溉的滿足率為88和83 ；乾旱年度的灌溉滿足率更低，形勢更為嚴峻。 -
Based on water use efficiency, water produce energy efficiency and economic benefit of water use to different crops, an overall evaluation of water use efficiency to cropping system in irrigation field of beijing is made, and a planting structure of grain cropping, fruit growing and vegetables in this region is put forwand to promote the development of thought and approach about water saving cropping system
摘要以各種作物的水分利用效率、水分能量生產效率和水分經濟利用效益評價為依據，對北京市灌溉農田的水分利用狀況進行了綜合評價，提出了該區域優化糧食作物、果樹和瓜菜類作物的種植結構，推進節水型種植業發展的思路與途徑。 -
After harvesting, we separated plant parts to determine economic yield and biological yield, calculated energy of the different parts according to a conversion ratio of energy and studied energy structure and energy efficiency of alley cropping by statistical analysis
通過兩年田間小區試驗，詳細記錄所有勞力投入、化肥投入、農藥投入、農事管理活動以及落葉的數量並折算為標準能量單位。 -
Water use efficiency in shunyi is comparatively 12 - 50 % lower than national level at present for crops except rice and soybean, which means a great water - saving potential in the region according to comparison between experimental observation and estimation. for most crops, yield potential can hardly be increased. therefore, it is necessary to enhance water - saving efficiency of cropping in the region
2 ）比較當前順義區作物實際水分利用效率和全國平均的作物水分利用效率得出：除夏大豆和水稻外，順義區其它作物水分利用效率低於全國平均值12 ? 50 ，與當地試驗值和理論計算值相比，還有很大的增長潛力；而作物實際產量與理論產量的比較表明，大部分作物的增產潛力已不大，所以，種植業節水效率還有待于進一步提高。 -
In the view of regional water balance and cropping irrigation efficiency increase, optimized model for the mid - long term cropping was proposed. practicing these pattern can guarantee water resources balance, satisfy the requirement of production, economic increase and ecological efficiency for agriculture
該方案基本可以實現順義區種植業水資源的平衡利用，滿足社會對農業生產的需求，並使農業經濟效益和養殖業生產得到最大可能的保證。
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