国槐小卷蛾在北京地区的生物学特性与防治研究

摘要

通过对国槐小卷蛾生物学特性的系统研究得知：国槐小卷蛾在北京地区1年发生2代,该虫以幼虫钻蛀当年生新梢为害,初孵幼虫多从羽状复叶柄的基部蛀入枝条内为害,蛀入前先吐丝拉网并在网下咬食树皮,再蛀入木质部内,受害处排出黑褐色粪沫。成虫发生期分别在5月中旬~6月中旬、7月中旬~9月上旬。在幼虫发生期,使用不同药剂防治试验表明：以灭幼脲3号为主,35%吡虫啉乳油、进行药剂防治试验,用2种药剂不同浓度喷雾防治效果均达到95%以上。%　　The systematic study on Sophora japonica Meyrick shows the biological characteristics and occurrence rule in Beijing. In view of life habits and damage characteristics of Sophora japonica Meyrick, this paper puts forward the comprehensive prevention and control measurements, so as to provide reference for the tree cultivation.