近几年来,我场的葡萄树屡遭梨卷叶象甲的危害并日趋严重。据1988年以来的几年观察,该虫除为害梨树外,还严重为害葡萄树,平均每平方米被害叶片20—40片,最多达59片,从远处看,葡萄架面象火烧似的,直接影响其产量和长势。为害特征与为害梨叶基本相似,以卷叶为害为主。雌成虫先咬伤叶柄,使叶片萎蔫下垂,卷曲成 In recent years, the grapevines in our field have been repeatedly endangered by and worshiped by Pear leaf weevils. According to several years since 1988, the pest was also seriously damaging to the grapevines except for pear trees. The average number of damaged leaves was 20-40 per square meter, up to 59. From a distance, Of the direct impact on its output and growth. Harmful characteristics and damage pear leaves are basically similar to the main leaf roll damage. Female adults first bitten petioles, leaf wilting drooping, curled into