Abstract:

Objective To identify efficacy of pyrethroid aerosol insecticides in killing Culex pipiens pallens, Musca domestica and Blattella germanica. Methods KT₅₀ is one of four kinds of aerosol insecticides on three types of insects were tested according to GB/T 13917.2－2009 in hermetic round canister. Killing efficacy in simulated fields was tested according to GB/T 13917.10－2009. Results The KT₅₀ values of four kinds of aerosol insecticides were less than 2 minutes for Cx. pipiens pallens and M. domestica, and less than 1 minute for B. germanica. The 24 h-mortality of insects used in the hermetic round canister was 100%. The one -hour killing efficacy of the four aerosol insecticides in simulated fields for Cx. pipiens pallens, M. domestica and B. germanica was 100%. Conclusion The four aerosol insecticides all showed fast killing effects for Cx. pipiens pallens, M. domestica and B. germanica.

Key words: Pyrethroid, Insecticides compound, Culex pipiens pallens, Musca domestica, Blattella germanica

摘要：

目的 筛选几种油基拟除虫菊酯复配气雾剂,在实验室观察其对淡色库蚊、家蝇和德国小蠊的杀灭效果。方法 根据GB/T 13917.2－2009,用圆筒法测定气雾杀虫剂对3种昆虫的半数击倒时间(KT₅₀),根据GB/T 13917.10－2009,测试模拟现场实验效果。结果 对淡色库蚊的杀灭实验中,1号和3号配方的KT₅₀均＜1 min,其他2种配方均＜2 min；对家蝇的杀灭实验中,3号配方的击倒时间最短,为0.90 min,其他3种配方均＜2 min；对德国小蠊的杀灭实验中,KT₅₀值均＜1 min；3种试虫的24 h死亡率均为100%。模拟现场实验中,4种配方对3种试虫的1 h击倒率和24 h死亡率均为100%。结论 4种复配杀虫剂配方均达到了快速杀灭蚊、蝇和蜚蠊的效果,可以进入下一步实验。

关键词: 拟除虫菊酯, 复方杀虫剂, 淡色库蚊, 家蝇, 德国小蠊