摘要
运用二次正交旋转组合设计，以对稗草抑制率为目标函数，以除草剂用量、土壤湿度为决策变量，建立目标性状与除草剂用量及土壤湿度之间的数学模型。通过模拟寻优，得到在不同土壤湿度影响下丁草胺、乙草胺、农得时、甲磺隆４种除草剂抑制稗草的优化方案。模型解析结果表明，当其他条件一致时，除草剂的用量是除草效果的关键，土壤湿度对除草剂的药效存在不同程度的影响，通过调节土壤湿度可使土壤处理除草剂药效提高。
Using methods of rotational designs and making the effects of controlling E. crusgallis as goal function and dosage of herbicide and soil moisture as decisionmaking variable, the mathematical model of the herbicide's dosage and soil moisture to goal function was set up. Simulating and seeking classy with it, acquired the optimize scheme was obtained to inhibit E. crusgallis by butachlor, acetochlor, bensulfuronmethy and methsuronmeth under influence of deferent soil moisture. The result showed, when the other conditions were same,the pivotal factor to control weeds was the herbicide dosage, and soil moisture had different effect on the efficiency of herbicides.When the soil moisture was excellont, the efficiency of the herbicide can be increased.
出处
《华北农学报》
CSCD
北大核心
1999年第2期119-124,共6页
Acta Agriculturae Boreali-Sinica
基金
云南省自然科学基金
关键词
土壤湿度
除草剂
药效
数学模型
Soil moisture
Efficiency of herbicide
Mathematical model
