小菜蛾田间种群对杀虫剂的抗药性测定

Determination of Pesticide Resistance of Plutella xylostella Field Population

为弄清小菜蛾田间种群对杀虫剂的抗药性,采用浸叶和点滴方法,就贵阳、安顺和遵义3个地区的小菜蛾田间种群对多杀霉素、虫螨腈和苏云金杆菌等13种杀虫剂的抗药性进行了测定。结果表明:3个地区小菜蛾田间种群对多杀霉素、虫螨腈、苏云金杆菌和氟虫腈的敏感性很高,对杀螟丹和杀虫双的敏感性较差,对阿维菌素、甲维盐和拟除虫菊酯类杀虫剂产生了严重的抗药性。

In order to explore the pesticide resistance of P. xylostella field population, leat-dip method and drop method were used to determine their resistance to 13 kinds of pesticides in Guiyang, Anshun and Zunyi, including spinosad, chlorfenapyr, thuricide and so on. The results showed that in the three areas P. xylostella field population had very high sensitivity to spinosad, chlorfenapyr and thurieide. But low sensitivity to cartap and dimehypo, and they had severe resistance to abamectin, emamectin benzoate and pyrethroid insecticides.