关于梨腐烂病的研究报道甚少,该病在我院梨园发病严重,发病率为99％,病情指数为61.2。此病已成为梨生产上极待解决的问题。通过几年的观察研究,它多发生在主枝上、侧枝上以及分枝的基部、伤口部位,病斑多发生在向阳面。病斑最初水渍状、稍隆起,病皮下面的皮层腐烂,变成褐色、有酒糟味,逐渐发展成病部失水、凹陷,病健交界处有裂缝,最后病部表面长出疏稀的小黑点,冬春病皮翘起,重者引起枝条甚至全株死亡。 Little research has been reported on pear rot disease, with a serious incidence of 99% in pear orchards in our hospital and a disease index of 61.2. The disease has become a pear production problem to be solved. After several years of observation and study, it occurred in the main branch, the branches and branches of the base, the wound site, lesions occur in the sunny side. Lesions initially water-like, slightly elevated, the skin below the skin decay rot, brown, wine bad smell, and gradually developed into a diseased part of the water, depression, Jianjian junction there are cracks, and finally the thinning of the surface of disease Little black spots, spring and winter skin eversion, severe cause even branches and whole plant death.