灭幼脲一号是一种性能较优越的生长调节剂,它能通过干扰昆虫的脱皮生理过程抑制内表皮中几丁质的合成而使昆虫致死。本剂通过接触作用对斜纹夜蛾、菜白蝶、小菜蛾等幼虫均能产生效应。试验结果表明,100PPm的处理能使斜纹夜蛾3令以下幼虫死亡率达85％以上,能使菜白蝶4令以下幼虫 Chlorbenzuron is a superior performance of the growth regulator, which can inhibit insect peel physiological processes inhibit the synthesis of chitin in the epidermis and make insects die. The agent through contact with the effects of Spodoptera litura, cabbage butterfly, diamondback moth and other larvae can produce effects. The results showed that the treatment of 100PPm could make the mortality of Spodoptera litura 3 more than 85%