4种杀螨剂对二斑叶螨实验种群的致毒作用  

Toxicable Effects of Tetranychus urticae Koch to Four Kind of Acaricides

作　　者：牛永浩[1] 周长勇[1] 花蕾[1] 李平[1] 

机构地区：[1]西北农林科技大学植物保护学院,杨凌712100

出　　处：《上海交通大学学报（农业科学版）》2008年第3期251-253,共3页Journal of Shanghai Jiaotong University(Agricultural Science)

基　　金：农业部农业结构调整重大技术研究专项(2002-08-03A)

摘　　要：在室内运用浸渍法和叶片残毒法测定了4种杀螨剂对二斑叶螨抗性种群不同发育阶段的致毒作用。结果表明:阿维菌素对雌成螨的毒力最高,LC50为0.0876mg·L-1;其次为三唑锡和白红螨清,LC50分别为1.2826mg·L-1和1.4369mg·L-1。对卵的毒力也是阿维菌素最高,LC50为0.4951mg·L-1;其次为螨及时和白红螨清,LC50分别为1.0749mg·L-1和4.6578mg·L-1。对二斑叶螨的室内控制效果依次为阿维菌素>三唑锡>白红螨清>螨及时。The toxicities of four kind Of acaricides and their mixtures to Tetranychus urticae Koch were measured by both slide-dip method and leaf-dip method in the laboratory. The results showed that avermectin had the highest toxicity to female adults, LC50 was 0.0876 mg·L^-1 ; Azocyclotin and Baihongmanqing had higher toxicities, LC50 were 1.2826 mg·L^-1 and 1.4369 mg·L^-1. While, the acaricides which had the highest toxicity to eggs also was avermectin, LC50 was 0.4951 mg· L^-1; Manjishi and Baihongmanqing had higher toxicities, LC50 were 1.0749 mg· L^-1 and 4.6578 mg. L^-1 The orders of four kind of acaricides from high to low were avermectin〉Azocyclotin〉Baihongmanqing〉Manjishi.

关 键 词：二斑叶螨 杀螨剂 雌成螨 卵 毒力 

分 类 号：S436.661.23[农业科学—农业昆虫与害虫防治]