杨干象是杨树主要的蛀干害虫,属于国内林木植物检疫对象之一,主要为害5年生以下的杨树幼林。目前随着辽宁省锦州市绿色通道、退耕还林、停耕造林、环城防护林及个体承包速生丰产林大户的迅速增加,杨树造林面积近三年来增加了4万余公顷,危害杨树的主要害虫———杨干象已成为防 Yang dry elephant is the main stem borer of poplar, belonging to one of the quarantine objects of domestic forest plants, mainly young trees damaged less than 5 years old. At present, with the rapid increase of the large greenhouses in Jinzhou City, Liaoning Province, returning farmland to forestry, stopping and afforestation, urban protection shelterbelt and individual contracting of fast-growing and high-yielding forests, afforestation area of ​​poplar increased by 40,000 ha over the past three years, The main pest - Yang dry elephant has become a defense