2种玻璃药膜法测定速灭威对异色瓢虫的毒性比较  

Comparison of Two Glass Film Methods for Determining the Toxicity of Metolcarb to Harmonia axyridis

作　　者：陈红英 卢文博 袁善奎 田建利 CHEN Hongying;LU Wenbo;YUAN Shankui;TIAN Jianli(Institute for the Control of Agrochemicals,Ministry of Agriculture and Rural Affairs,Beijing 100125,China;College of Biological and Resource Environment,Beijing University of Agriculture,Beijing102206,China)

机构地区：[1]农业农村部农药检定所,北京100125 [2]北京农学院生物与资源环境学院,北京102206

出　　处：《现代农药》2021年第5期23-26,共4页MODERN AGROCHEMICALS

摘　　要：笔者比较了指形管药膜法和玻璃板药膜法测定速灭威对异色瓢虫的毒性结果差异。结果表明,采用指形管药膜法速灭威对异色瓢虫的半致死用量(LR_(50))为3.07 g a.i./hm^(2);玻璃板药膜法LR_(50)值为243 g a.i./hm^(2),2种不同的玻璃药膜法对异色瓢虫的LR_(50)值差异达到了79倍,说明指形管药膜法测定瓢虫对农药的敏感性更强。In this paper,the difference of toxicity results of metolcarb to Harmonia axyridis by finger tube film method and glass plate film method was compared.The results showed that the LR_(50) value of metolcarb to Harmonia axyridis for finger tube film method was 3.07 g a.i./hm^(2),and the LR_(50) value of metolcarb to Harmonia axyridis for glass plate film method was 243 g a.i./hm^(2).The difference of toxicity results between the two methods was 79 times,indicating that the finger tube film method was more sensitive.

关 键 词：异色瓢虫 速灭威 毒性 指形管药膜法 玻璃板药膜法 

分 类 号：S433.5[农业科学—农业昆虫与害虫防治]