6种杀螨剂对朱砂叶螨不同生测方法的毒力比较  

Comparison of Six Acaricides by Different Bioassay Methods to Tetranychus cinnabarinus Toxicity

作　　者：师超[1] 涂锡茂[1] 冯雪春[1] 付艳艳[1] 王磊[1] 曹倩[1] 邓新平[1] 

机构地区：[1]西南大学植物保护学院农药研究中心,重庆北碚400716

出　　处：《农药》2012年第3期222-224,共3页Agrochemicals

摘　　要：[目的]筛选出对朱砂叶螨具有较好防效的药剂。[方法]采用药膜法、玻片浸渍法对6种杀螨剂进行室内毒力测定,并对2种生测方法进行比较。[结果]在2种方法下,6种药剂表现的毒力大小均为阿维菌素>唑螨酯>丁醚脲>三唑锡>哒螨灵>螺螨酯,同种药剂测定产生的毒力结果为玻片浸渍法>药膜法,且速效型药剂在玻片浸渍法与药膜法中表现的相对毒力倍数为3-5之间。[结论]试验表明阿维菌素、唑螨酯、丁醚脲均对朱砂叶螨表现出较高的毒力。[Aims] The aim is to screen out the highly efficient pesticides for Tetranychus cinnabarinus.[Methods] Six acaricides were assayed by surface contact and slide-dip methods under the laboratory circumstance with the comparison of the above two methods.[Results] It indicated that the toxicities of six acaricides in above-mentioned two methods were both： abamectin 〉 fenpyroximate 〉 diafenthiuron 〉 azocyclotin 〉 pyridaben 〉 spirodiclofenester.Generally speaking,each acaricide toxicity assay result came to the same as higher in the surface contact method than that in slide-dip.RTI（Relative Toxicity Index） of quick-acting acaricides were between 3-5 in comparison of surface contact method and slide-up method.[Conclusions] The result indicated that abamectin,fenpyroximate and diafenthiuron exhibit higher toxicities compared with other ones.

关 键 词：朱砂叶螨 毒力测定 药膜法 玻片浸渍法 

分 类 号：S482.52[农业科学—农药学]