害虫防治经过了一段曲折的历史,四十年代之前是用各种防治方法的配合,四十年代时有了DDT,以后又出现了有机磷及氨基甲酸酯等各种农药,它们防治害虫的效果极其突出,以致于在该时期中整个害虫防治变成了完全或几乎完全依赖杀虫药剂。六十年代开始,人们体会到这种做法有严重的缺点,一方面是害虫越治越猖獗,尽管防治还是有效,但是害虫发生得更 Pest control after a period of twists and turns of the history before the forties is the use of a variety of control methods with the DDT in the 1940s, and later appeared a variety of organic phosphorus and carbamate pesticides, which control pests The effect is so pronounced that during this period the entire pest control became completely or almost exclusively pesticide-based. At the beginning of the 1960s, people realized that this practice has serious shortcomings. On the one hand, the more the pests are more and more rampant, the pests are more likely to occur even though the control is still effective