1) Crop loss assessment
![点击朗读](/dictall/images/read.gif)
产量损失评价
4) Yield loss
![点击朗读](/dictall/images/read.gif)
产量损失
1.
Studies on the damage degree and yield loss by Asian corn borer;
![点击朗读](/dictall/images/read.gif)
亚洲玉米螟为害程度与产量损失研究
2.
Identification of the disease resistance of maize cultivars to maize rough dwarf disease and the relationships between disease indices and yield loss;
河北省主推玉米品种对粗缩病抗性鉴定及病情指标与产量损失率关系研究
3.
Change in canopy reflectance and yield loss of corns damaged by Asian corn borer (Ostrinia furnacalis);
亚洲玉米螟为害后玉米冠层光谱变化和产量损失研究
5) Yield evaluation
![点击朗读](/dictall/images/read.gif)
产量评价
6) yield loss ratio
![点击朗读](/dictall/images/read.gif)
产量损失率
1.
On the basis of the results achieved above,the models for disease index and yield loss ratio and for disease index and weight per kilograin were established.
研究了小麦纹枯病病情指数与产量损失率及千粒重的关系。
补充资料:油田开发经济边际产量评价
油田开发经济边际产量评价
evaluation of economic marginal production on oil field
油田开发经济边际产里评价(e valuationofeeonomi。mar营ina一produetion on oilfie一d)经济边际产量指在一定的技术经济条件下,增加某一单位生产要素所带来的收益能满足最低利润要求时的产量。油田开发经济边际产量有两类。一是开发前期经济边际产量,它指在一定技术经济条件下,油田的开发投入所带来的效益必须满足行业基准收益率时应达到的产量界限;二是老区调整措施经济边际产量,它指老油田为弥补产量递减或为保持稳产,每年都要采取大量措施(如投产新井、对老井实施改进性措施、开展三次采油等)投人的费用所带来效益,当边际效益等于边际成本时的产量。研究经济边际产量的目的在于为经济决策提供依据。(许红)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条