杨干象甲(Cryptorrhynchus Iapatni L)是我国森林害虫检疫对象之一。近年来我国东北各省的杨树人工林遭到猖獗为害,植株被害后轻则生长缓慢,影响材质,重则风折枯死。杨干象甲在我省主要分布于哈尔滨、齐齐哈尔、绥化、嫩江、松花江、合江、黑河等地区,尤其嫩江地区的林甸、富裕、龙江、太康等县发生普遍,主要为害树种是中东杨,近 Cryptorrhynchus Iapatni L is one of the quarantine objects of forest pests in our country. In recent years, the poplar plantations in northeastern provinces of our country have been rampant, while plants have slowed down after they were killed, affecting the quality of the plantation and damaging the windbreak. The stems and barks of Yangganchengjia are mainly distributed in Harbin, Qiqihar, Suihua, Nenjiang, Songhuajiang, Hejiang and Heihe areas, especially in Lindian, Wealthy, Longjiang and Taikang in Nenjiang Province. Yang, near