目前应用拟除虫菊酯类杀虫剂防制卫生害虫,仍是一种重要措施之一,该类杀虫剂品种多,应用广泛,近年来各地均有不同程度抗药性报道。杀螟松是有机磷类杀虫剂,杀虫高效、广谱,对人畜毒性低,也用于防制卫生害虫。为克服抗性,提高灭蚊效果,降低成本,于1992年在实验室,选用溴氰菊酯、氯菊酯与杀螟松相互混配对淡色库蚊幼虫进行毒力测定,现将观察结果报告如下: At present, the application of pyrethroid insecticides to control pests is still one of the important measures. The insecticides are widely used and widely used, and have been reported in varying degrees in recent years. Fenitrothion is an organic phosphorus insecticide, insecticidal efficient, broad-spectrum, low toxicity to humans and animals, but also for the control of health pests. In order to overcome the resistance, improve the mosquito control effect and reduce the cost, in 1992, deltamethrin, permethrin and fenitrothion were selected and mixed with each other to test the virulence of Culex pipiens pallens larvae in laboratories. The report of the observation results as follows: