2) corporate governance indices
公司治理指标
4) Control threshold
防治指标
1.
Study on the Control Threshold of Hylobitelus xiaoi Zhang;
萧氏松茎象防治指标的研究
2.
Occurrence regularity and control threshold of Aphis glycines in fresh soybean fields;
鲜食大豆蚜虫种群增长规律与防治指标
3.
Study on forecasting and control threshold of Drosicha corpulenta (Kuwana);
草履蚧预测预报与防治指标
5) economic threshold
防治指标
1.
Research on the economic threshold of cotton plant bugs to transgenic Bt cotton;
转Bt基因抗虫棉棉盲蝽防治指标研究
2.
A study on the yield loss and economic threshold of alfalfa damaged by thrip, Odentothrips lati;
蓟马危害苜蓿的产量损失及防治指标研究
3.
Sdudy on the Economic Threshold of Tea Leafhopper (Empoasca vitis Gothe);
假眼小绿叶蝉防治指标的研究
6) action threshold
防治指标
1.
The occurrence,damage and action threshold of Chinese rice grasshopper, Oxya chinensis,in rice field;
稻田中华稻蝗发生动态、危害损失及防治指标
2.
Rice yield loss due to Chlorops oryzae Matsumera and its action thresholds in rice fields in Zhejiang province;
浙江稻田稻秆潜蝇为害损失与防治指标研究
3.
Moreover, the action threshold model including natural enemies effects , and the functional equations reflecting the relationship between the larvae density and the yield losses of cabbage at the different growth stages were also established.
应用均匀设计方法 ,测定了菜青虫连续为害春甘蓝结球始期和菜球充实期造成的产量损失 ,并应用生命表方法评价了春甘蓝上菜青虫天敌的作用 ,建立了包括甘蓝生育期和菜青虫种群密度在内的产量损失模型和包含各类天敌作用的防治指标模型。
补充资料：治理
①控制管理：治理国家｜治理企业。②整治；整修：治理黄河。
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