青海云杉黄卷蛾生物学特性及防治研究初报

Bionomics and control of Archips crassifolianus

青海云杉黄卷蛾ArchipscrassifolianusLiu在甘肃祁连山东段林区一年发生 1代 ,以 2龄幼虫在寄主新梢基部及轮芽处越冬 ,翌年 5月中旬开始活动为害 ,6月上旬达到盛期。幼虫 2～ 3龄时用 5 0 %杀螟松、 80 %敌敌畏乳油 10 0倍弥雾 ,防治效果均达到 90 %以上。用含芽孢 3～ 4亿 /ml苏云金杆菌喷雾 ,防治效果可达到 75 %。

Archips crassifolianus Liu has one generation a year in Tianzhu Forest Area of Qilian Mountains and overwinters as the 2nd instar larva in the hosts base of new shoots and buds.It begins to attack the hosts in mid May the next year with a peak in the first ten days of June. Spraying 50% fenitrothion and 80% dichlorvos EC diluted to 100 times can kill 90% of the pest.