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化学杀虫剂从40～60年代间发展迅猛,已成为防治害虫的主要手段。但随着化学杀虫剂长期和大量的应用,害虫抗药性的增强、对有益生物的杀伤、在高等动物体内蓄积以及对环境的污染等均日趋严重。因此,高效、低毒、长效、低残留、易于生物降解的化学杀虫剂,便成为化学杀虫剂发展的方向。拟除虫菊酯类是比较理想的化学杀虫剂,自七
Chemical pesticides have developed rapidly from the 40s to the 60s and have become the main means of controlling pests. However, with the long-term and large-scale application of chemical insecticides, the resistance of pests increases, the killing of beneficial organisms, the accumulation in higher animals and the pollution of the environment are becoming increasingly serious. Therefore, highly effective, low toxicity, long-lasting, low-residue, biodegradable chemical pesticides have become the direction of the development of chemical pesticides. Pyrethroids are the ideal chemical insecticides since seven