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苹果卷叶象〔 Byctiscus princeps( Solsky)〕属于鞘翅目、象甲科 ,主要危害杨树、苹果、梨等。此虫在河北承德避暑山庄内对杨树的危害非常严重 ,我们对此虫进行了系统调查。1 发生与危害于 1 999年 4～ 9月在避暑山庄内采取1 2个样点 ,对上千株 2 0～ 4 0 a生杨树进行调查 ,
Apple coiled leaves icon [Byctiscus princeps (Solsky)] belongs to the order Coleoptera, like a branch, the main hazards poplar, apple, pear and so on. The insects in Hebei Chengde Mountain Resort on the hazards of poplar very serious, we conducted a systematic investigation of the pest. 1 Occurrence and Harmness From January to September 1999, 12 sampling sites were taken in the Mountain Resort to investigate thousands of 20 ~ 40 years poplar trees.