杨树食叶害虫主要是指发生普遍的杨扇舟蛾、杨小舟蛾、杨尺蠖、舞毒蛾、柳毒蛾和杨毒蛾等。由于杨树食叶害虫涉及种类多,其防治方法也不尽相同,也可参照相关种类的防治。一、防治对策根据“预防为主,综合治理”的方针和保护生态环境的原则,杨树食叶害虫防治要坚持以适地适树和 Poplar leaf insect pests mainly refers to the occurrence of the common Yang Fan moths, Yang Xiaotie, Yang Zha, Gypsy moth, Liu poisonous moth and the poisonous moth and so on. As poplar leaf insects involved in many types of control methods are not the same, but also can refer to the relevant types of control. I. Prevention and control measures According to the principle of “prevention first, comprehensive management” and the principle of protecting the ecological environment, poplar leaf pest control should adhere to the appropriate tree and