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棉铃虫是我国北方棉区的重要害虫之一,其发生为害有逐年加重趋势,1990和1991年发生时,出现了多种常规杀虫剂防治难以奏效的局面,1992年在黄河、长江流域及东北棉区又出现了多年未遇的特大发生,致使大面积棉花大幅度减产。针对棉铃虫对拟除虫菊酯类杀虫剂已产生程度不等的抗性,而对有机磷和氨基甲酸酯类的抗性尚不明显,且后两类杀虫剂具有与菊酯类不同的杀虫作用机制,1992年,就湖南省化工研究院提供的三种氨基甲酸酯类杀虫剂进行了
Helicoverpa armigera is one of the important pests in northern cotton area of our country. The incidence of pests is increasing year by year. When the occurrence occurred in 1990 and 1991, many kinds of conventional insecticides appeared ineffective. In 1992, The emergence of the northeast cotton area has witnessed the extraordinary occurrence of many years, resulting in a substantial reduction in output of large areas of cotton. For cotton bollworm pyrethroid insecticides have been produced to varying degrees of resistance, and organic phosphorus and carbamate resistance is not obvious, and the latter two types of insecticides with pyrethroids different Insecticidal mechanism of action, in 1992, Hunan Institute of Chemical Industry provided three kinds of carbamate insecticide were