河南省境内危害杨树的病害主要有杨树溃疡病、杨树腐烂病、杨树黑斑病等病害,全省各地均有分布。杨树溃疡病、杨树腐烂病等枝干病害严重发生时常造成树干上部枯死;杨树黑斑病等叶部病害危害严重时,造成树叶提前大面积脱落,严重影响树木生长。现就河南省常见的杨树病害简要介绍其防治措施,供参考。 The diseases of poplar trees in Henan Province mainly include poplar canker disease, poplar rot disease and poplar black spot disease, which are distributed all over the province. Poplar canker disease, poplar rot disease and other branches of the disease often occurs when the upper trunk dead; poplar black spot disease and other leaf damage serious, resulting in large areas of leaves in advance off, seriously affecting the growth of trees. Now common in Henan Province, a brief introduction of poplar disease control measures for reference.