梨瘿华蛾的发生与防治  

A study on the occurrence of Sinitinea pyrigalla Yang and its control

作　　者：杨茂发[1] 

机构地区：[1]贵州大学昆虫研究所,贵州贵阳550025

出　　处：《山地农业生物学报》2000年第3期182-184,共3页Journal of Mountain Agriculture and Biology

摘　　要：梨瘿华蛾是梨树枝干的主要害虫之一 ,为摸清该虫在贵阳地区的发生规律及生活习性 ,采用田间系统调查并结合室内饲养方法 ,于 1998～ 1999年在贵阳梨园对该虫的年生活史及习性进行了观察研究。结果表明 ,该虫在贵阳一年发生 1代 ,以蛹在被害枝瘤瘿内越冬。翌年 2月下旬开始羽化为成虫 ,产卵在梨树枝条的缝隙处 ,3月中下旬卵孵化为幼虫蛀入梨树新梢内为害 ,被害枝逐渐形成瘤状虫瘿 ,10月上旬幼虫陆续化蛹越冬。影响该虫发生的主要环境因素是天敌广齿腿姬蜂 ,其寄生率达 2 3%。在防治方法上 。Sinitinea pyrigalla Yang is one of the important insect pests of pear branch.This paper did observation and study on the life cycle and habits of the pest with methods of systematical investigation in pear garden and house raising in Guiyang during 1998-1999.The results show Sinitinea pyrigalla has one generation each year in Guiyang and overwinter in the gall of bored pear branch in pupae stage.The adults begin to emergence in the last ten day period of February laying eggs in the crack of pear branch but a few on the surface.The larvae occur from March to October,which bore into the tender branch gradually leading to the gall and spend their whole larval stage in it.Until the first ten day period of October,the larvae mature and pupate in the gall.The main environmental factor to influence occurrence is its natural enemy Pristomerus vulnerator(Panzer),their parasitic ratio is up to 23%.Two measures to control the pest including cutting out the gall and chemical control is also proposed in the paper.

关 键 词：梨瘿华蛾 果树害虫 发生规律 防治 梨树 

分 类 号：S436.612.2[农业科学—农业昆虫与害虫防治] S661.2[农业科学—植物保护]