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杨树是河南省退耕还林中栽植面积最大、范围最广的一个树种,而且多为大面积纯林,发生病虫害的可能性最大。杨树食叶害虫主要指发生普遍的杨扇舟蛾、杨小舟蛾、分月扇舟蛾、杨尺蠖、舞毒蛾和杨毒蛾。杨树蛀于害虫主要是天牛,其幼虫蛀食树干和枝梢,造成树木折枝断头,甚至死亡。被害严重的林木千疮百孔,材之无用,薪之无焰。造成严重危害的种类有光肩星天牛、黄斑星天牛、青杨天牛、青杨虎天牛、锈斑楔天牛、云斑天牛等几种。
Poplar is the largest cultivated area in Henan Province, the most extensive range of a tree species, but mostly large-area pure forest, the greatest possibility of occurrence of pests and diseases. Poplar leaf insect pests mainly refers to the occurrence of the common Yang Fan moths, young boat moths, sub-monthly marine moths, Yang Zha, Gypsy moths and poison moths. Poplar beetles are mainly pests in the pest, the larvae eaten tree trunks and shoots, resulting in broken branches of trees broken branches, and even death. Serious damage to the trees riddled with holes, the useless material, the salary of the flame. Caused a serious hazard species are Shikuanguangtian, Phasianus alternatus, Qingyang Tian cattle, Green Tiger tiger beetle, rust wedge days of cattle, Yun Tian Tian cattle and other species.