我大队是以苹果为主,兼栽桃、梨等果树的专业大队.由于栽培混杂,造成了梨小食心虫交替为害,严重影响果树正常生长和果实的经济价值.虽曾采用多种防治措施,但由于对此虫的发生规律掌握不够,加以它一年发生数代,世代重迭,又生活在果内, Our brigade is a professional group of mainly apple-based peaches and pears and other fruit trees.As a result of the mixed cultivation, pest and worm moth alternately cause serious damage to the economic growth of fruit trees and fruits.Although a variety of control measures have been adopted, However, due to the fact that there is not enough regulation of the occurrence of this pest, it has taken place several generations a year, overlapping generations, and living in the fruit,