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杨树是河南的主要速生、用材、造林树种之一。伴随杨树栽培面积的逐步扩大,引种和繁育工作的开展,杨树害虫的种类、分布和为害程度,都引起了显著变化。如白杨透翅蛾自1953年前后随从外地引进银白杨、美杨、加杨等带入我省后,目前已蔓延到全省各地;青杨天牛过去仅在山区局部发生,现已成为平原杨树枝梢的严重威胁;大袋蛾随着法桐的引进,前几年主要在城市绿化树种上为害,现已蔓延到豫东、豫北等地防护林带;杨尺蠖过去只在豫东榆树上偶而发生,近年来已成为各地杨树上的主要害虫,而且已向梨树、苹果上转移;
Poplar is Henan’s main fast-growing, timber, afforestation species. Accompanied by the gradual expansion of poplar cultivation area, the introduction and breeding work carried out, poplar pests species, distribution and damage caused a significant change. Such as poplar moth since 1953 around with the introduction of poplar, the United States Yang, plus Yang, etc. into the province, has now spread to all parts of the province; Green Yang Tian cattle in the past only occurred in the mountains, has now become a plain poplar branch With the introduction of Fatong, a few years ago mainly in urban greening species damage, has now spread to the Yudong, Yubei and other places shelterbelt; Yang Zhaoxi in the past only occurred occasionally on the elm in eastern Henan In recent years, it has become the major pest on poplar trees all over the country and has been transferred to pear trees and apples.