摘要
本文将Ｓ．Ｒ．Ｃｏｌｈｙ式中变形，令Ｆ＝ｘｙ，两边取对数得ｌｇＦ＝ｌｇｘ＋ｌｇｙ，以ｘ为横坐标，ｌｇｘ为纵坐标绘制曲线图，可简便求出理论杂草生长率。然后按Ｎ．Ａ．Ｍａｎｓｏｕｒ的毒力指数值评估除草混剂的联合作用。
The form of S.R. Colhy's formula E=xy/l00 ischanged into LogF=logx+logy,in the latter,F=xy. The the-oretical growth rate of weed is obtained easily from the graphwhose variate of the horizontal axis is x and that of the verticalaxis is logx. Then,the effectiveness of the combined weed-killer can be evaluated according to the N.A. Mansour's expo-nent of the toxicity.
出处
《农药》
CAS
北大核心
1995年第4期31-33,共3页
Agrochemicals
关键词
杂草
生长率
除草
混剂
药效试验
growth rate of weed, toxicity, evaluation,combined herhcides formulations,effectiveness.
