草坪腐烂病是危害草坪的严重病害之一。病斑通常发生在老叶上,初始为深绿色、水渍状、不规则病斑,后枯萎至暗古铜色,边缘常为浅褐色。病斑源于新刈割的叶片顶部或受侵染的叶面,最终使叶片从尖部至基部逐步枯死。病害发生后,草坪上常出现一片病株,呈现圆形斑,直径15～60厘米,中央的小草植株仍是健康 Lawn rot disease is one of the serious diseases that damage the lawn. Lesions often occur in the old leaves, the initial dark green, water-like, irregular lesions, after the withered to dark bronze, the edge is often light brown. Lesions originate from the top of newly mowed leaves or infested leaves, eventually causing the leaves to gradually die from the tip to the base. After the occurrence of disease, the lawn often appear a diseased plant, showing a circular spot, diameter 15 ~ 60 cm, the central grass plant is still healthy