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据历史记载,我国在没有化学合成农药之前,最早的农药有不少是从植物中提取出来的。有些植物源已开发成商品用杀虫剂,如硫酸烟碱等。但自20世纪40年代以来,化学合成农药纷纷替代了植物性农药而雄居市场,使得植物性农药的研究一度陷入低谷。毫无疑问,1939年Paul Muller首次发现滴滴涕,从此开创了害虫防治史上有机合成杀虫剂时代,众多的有机合成杀虫剂在保证农作物丰产等方面发挥了不可磨灭的作用。但有机合成杀虫剂在使用中产生的“三R”问题,即残留(Residue)、抗性(Resistance)及害虫再猖獗(Resurgence)引起了人们对其高度的
According to historical records, a lot of the earliest pesticides were extracted from plants before the chemical synthesis of pesticides in our country. Some plant sources have been developed into commercial pesticides, such as nicotine sulfate. However, since the 1940s, chemical synthetic pesticides have replaced the botanical pesticides and dominated the market, making the study of botanical pesticides once in a slump. Undoubtedly, when Paul Muller first discovered DDT in 1939 and started the era of organic synthetic insecticide in pest control history, numerous organic synthetic insecticides played an indelible role in ensuring the high yield of crops. However, the problem of “three R” caused by the use of organic synthetic insecticides, that is, Residue, Resistance and Resurgence,