随着杨树人工林的发展,杨树病虫害也随之蔓延。杨树的主要害虫如杨干象鼻虫、白杨透翅蛾、青杨天牛等,在苗木干内或大树枝内钻蛀为害,被害处逐渐形成疙瘩,不仅使杨树枯死或风折,而且传播快,消灭困难。因此,积极开展杨树苗木的检疫,是防止害虫传 With poplar plantation development, poplar pest and disease also will spread. Poplar main pests, such as Yang dry Weevils, poplar moths, Green Poplar, etc., in the nursery stock or large branches borers damage, the victims gradually formed a knot, not only the poplar dead or wind folding, but also spread fast, Eliminate difficulties. Therefore, actively carry out the quarantine of poplar seedlings, is to prevent pests