山楂粘叶蜂生物学特性和防治方法的初步研究

山植是近年来我国北方各地发展较快的果树之一。山楂粘叶蜂(Allantus sp.)是新发现的仅为害山楂叶片的一种单食性害虫,为国内一新种。该虫在吉林省长春地区1年发生1代及一不完全的第2代。以老熟幼虫结茧在树盘下0—7cm的表土内越冬,盛夏7月份为害最重,但幼虫发生期可一直延续到9月上、中旬。为害幼虫体覆透明粘液。老熟幼虫在土中结茧化蛹。成虫和幼虫均有假死性。当前生产上可结合其他害虫的防治,用50%辛硫磷或50%杀螟松乳油1000倍液等有机磷杀虫剂;20%杀灭菊酯或20%灭扫利乳油4000—5000倍液等合成菊酯类农药常规喷雾,防治效果达90%以上。还可结合防治桃小食心虫等进行树盘土壤药剂处理。

PRELIMINARY STUDY ON THE BIOLOGY AND CONTROL OF HAWTHORN SLUG SAWFLY

Hawthorn slug sawfly Allantus sp.,a monophagous insect pestfeeding on hawthorn leaves only,has been newly found in ChangchunArea,Jilin Province and recorded for the first time in China.It hastwo generations,the first perfect one and the second imperfect oneper year and overwinters with mature cocooned larvae in 0-7 cm un-der soil surface beneath canopy.The larval stage lasts until early ormiddle September,and severely injurious in July.The body surface oflarva is covered with transparent mucilage.The adults and larvae allappear to feign death as they are agitated.Phoxim,fenitrothion,fenvalerate or fenpropathrin for spraying or traditional soil treatmentmay be effectively used against this insect pest,