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灭幼脲类杀虫剂是一种选择性仿生药剂,具有防治害虫经济有效、不污染环境、对人畜及天敌安全、无公害和对害虫不产生抗药性、抗雨水冲刷等特点。目前在林业害虫防治中广泛推广应用。但因灭幼脲防治害虫死亡速率较慢、都局限在低虫口区。为在松毛虫猖獗发生区利用灭幼脲防治,探讨防治松毛虫虫口阈值,在1985年防治试验的基础上,1986年春季对松毛虫猖獗发生区,利用灭幼脲Ⅲ号讲行了防治试验。
Chlorbenzuron insecticide is a selective biomimetic agent with pest control cost effective, does not pollute the environment, the safety of human and animal enemies and natural enemies, no pollution and no resistance to pests, anti-rain erosion characteristics. Currently widely used in forestry pest control. However, due to the slower control of penductum pest mortality rate, are limited to low insect population area. In order to control the incidence of pinecone in the area where the incidence of pine caterpillars was increased, the threshold of prevention and control of pine caterpillars was explored. Based on the control measures in 1985, the control area of pine caterpillars occurred in the spring of 1986. .