杨树为我国主要速生造林树种。随着杨树栽植面积的迅速扩大,由于忽视了适地适树以及病虫害防治工作,致使杨树的一些主要病虫害有所扩大蔓延。杨树水泡型溃疡病就是一例。该病在1955年以前,仅在北京个别苗圃发生,现已扩延到河北、天津、河南、陕西、辽宁、山东、安徽、江苏等省市。该病对青杨派和青杨派×黑杨派杂交无性系的杨树侵染危害较重,严重威胁杨树人工林的发展。为今后生 Poplar is the main afforestation tree species in our country. With poplar planting area rapidly expanding, due to neglect of the appropriate tree and pest control work, resulting in some of the major poplar tree pests and diseases have expanded and spread. Poplar blister ulcer disease is one example. The disease occurred before 1955 in only individual nurseries in Beijing and has now spread to Hebei, Tianjin, Henan, Shaanxi, Liaoning, Shandong, Anhui and Jiangsu provinces. The disease poses a serious threat to the poplar infection of the Qingyang faction and the Qingyang faction × Black poplar hybrid clones, which seriously threatens the development of poplar plantation. For the future students