杨树腐烂病又称烂皮病、臭皮病、出疹子,在我国普遍发生,除为害杨树外,也为害柳树、榆树、槐树等其他树种。腐烂病是由子囊菌纲、黑腐皮壳菌属的一种真菌引起的,属于寄主主导型潜伏性侵染病害,其症状有枯梢型和干腐型两种。感病初期,病部皮层出现暗褐色水漫状病斑,组织腐烂多水而变软,以后固皮层失水而干 Poplar rot disease, also known as rotten skin disease, odor skin disease, rash, in our country generally occur, in addition to the damage poplar, but also for the willow, elm, locust and other tree species. Rot disease is caused by a fungus of the genus Ascomycetes and genus Black, belonging to host-dominant latent infection diseases. Its symptoms are both dry shoot type and dry rot type. The early stages of disease, the disease appears dark brown cortex watery spots, tissue rot more water and become softer, dehydration and dry after the solid layer