梨小食心虫(Grapholitha molesta Busck)是绥中县梨果产区的主要害虫之一。此虫主要为害近成熟之果实,受害果易腐烂变黑,不能贮藏运输,并易在采收前脱落,造成损失。据调查,1963年以来该虫的危害率为7.6～38.4％,近几年为14％左右。关于梨小食心虫在梨园内的生活史及习性 Grapholitha molesta Busck is one of the major pests in the pear fruit producing area of ​​Suizhong County. The insects mainly harm the fruit near maturity, fruit perishable rotten black, can not be stored and transported, and easily fall off before harvesting, resulting in loss. According to the survey, the hazard rate of the pest was 7.6-38.4% since 1963 and about 14% in recent years. On Pear Mungbean insects in the pear orchard life history and habits