中华微蛾生物学特性及防治技术

报道了中华微蛾的形态特征、生物学特性和防治技术。中华微蛾在河北省昌黎县一年发生一代,老熟幼虫在虫瘿内越冬,翌年春季3月下旬开始钻出虫瘿,在虫瘿外部结茧化蛹,成虫于6月中下旬开始羽化,卵单产于新梢中部,幼虫7月上中旬开始孵化,幼虫钻入新梢内为害,形成大量虫瘿,严重影响新梢发育和树冠成型,影响杏树的产量和品质。试验采用3种不同药剂进行树干注射防治,虫口减退率均达到90%以上。

A study on the Biological Characteristics and Control Techniques of Sinopticula sinica Yang

The biological characteristics and control techniques of Sinopticula sinica Yang were studied in this paper.The results were as follows: Sinopticula sinica Yang was propagated for one generation throughout the year in ChangLi county HeBei province.The old larva lived through the winter in the gallaes,and it appeared in the last ten days of March of the next year and changed into pupa with its cocoon in late April.Adults were found in the middle or late June,and their eggs were scattered into the middle of newly developing parts of trees and hatched in the early July.Larva got into the inside trunk of the trees causing heavy damage.Three different chemical insecticides were adopted to control the pest through injecting the trees trunks and were effective in reducing the disease rate by over ninety percent.