【摘要】 灭幼脲是一类昆虫生长调节剂,对幼虫具有致迟效应,对卵具有杀伤作用.本文研究了它对松毛虫的生长和发育的抑制效应和对松毛虫卵的毒效作用,并进行了大面积防治试验.结果证明,灭幼脲对松毛虫毒性高、用量小、成本低、效果好,是一种理想的杀虫剂.更多还原

【Abstract】 Diflubenzuron is a sort of insectistatics, which has retardative effectto larvas and killing effect to their eggs. In this paper is studied its restrainingeffect to the growth of pine caterpillar ( Danderolimns Germar) and its poisoning effect to their eggs , and carried out the controlling experiment in large areas. The result shows that diflubenzuron is good for controlling pine caterpillars as its poisonousness is strong, its using amount less and its cost更多还原