摘要:目的 了解常用杀虫剂与增效剂氧化胡椒基丁醚(S 1 )混用对山东省三个不同地区现场淡色库蚊的毒力及增效作用。 方法 采用WHO生物测试法，计算几种常用杀虫剂配用S 1 对淡色库蚊的LC 50 、回归方程及增效系数。 结果 残杀威+S 1 、氯氰菊酯+S 1 、DDVP+S 1 复配增效系数分别在2.23～8.02之间、2.53～5.76之间和2.39～10.14之间，显示出较好的增效作用。 结论 当淡色库蚊产生抗药性后，采用杀虫剂与氧化胡椒基丁醚混用的方法，可以减少杀虫剂的使用剂量，取得较好防治效果。

    关键词:淡色库蚊;抗性;氧化胡椒基丁醚;增效作用

    Study on the efficacy of insecticides mixed with piperonyl butoxide against Culex pipiens pallens Larvae.

    SUN Chuan-hong，DUQiu-li，CHENG Peng，et al.

    (Shandong Provincial Institute of Parasitic Diseases，Jining272033，Shandong，P.R.China)

    Abstract:Objective The toxicity and synergism of several commonly used insecticides mixed with Piperonyl Butoxide against the larvae of Culex pipiens pallens collected from fields of three regions in Shandong province were determined for controlling vector mosquitoes by scientifically rational use of insecticides as well as delaying and overcome the occurrence and development of resis-tance. Methods WHO standard bioassay was employed to calculate LC 50 ......