通过在网室内观察杨白潜叶蛾在12个杨树品种上自由选择产卵后对各品种的危害,分析了杨白潜叶蛾对不同品种杨树的当年截干树和3年生树的危害差异。结果表明,杨白潜叶蛾对不同品种杨树的叶片危害率间存在显著差异,而同一品种的不同处理间差异不显著;除2 025杨和50杨外,其对同一品种的3年生树的危害普遍低于当年截干树。 By observing the harm of poplar leaf moth to 12 varieties of poplar after choosing spawning eggs in the net room, this paper analyzed the difference of the damage of poplar to different varieties of poplar. The results showed that there was a significant difference in leaf endangerment rate between Populus tomentosa and Populus different varieties, while the difference between the treatments of the same variety was insignificant. Except 2 025 poplar and 50 poplar, its damage to 3-year-old tree of the same species Generally lower than the year cut tree.