梨小食心虫Grapholitha molesta(Busck)是一种世界性果树害虫。在我省分布范围广、寄主植物多、为害严重。主要为害梨、桃、杏、山楂果实和桃梢。据调查,我省同川、榆次、高平等老梨区,黄梨、笨梨、夏梨受害率一般为15—30％,万荣孤山金梨被害率达70％左右。晋中、太原、代 Grapholitha molesta (Busck) is a worldwide pest of fruit trees. In our province a wide range of distribution, more host plants, serious damage. Mainly harmful pear, peach, apricot, hawthorn fruit and peach shoots. According to the survey, Tongchuan, Yuci and Gaoping equal old Pear districts, Huangli pear, stupid pears and summer pears suffer 15-30% of the victims in the province, and the rate of killing 10,000 or so Gushan pear is about 70%. Jinzhong, Taiyuan, on behalf of