梨树腐烂病,又叫臭皮病,主要发生在主干和主枝上,病疤起初呈水渍状,红褐色,浮肿,病疤边缘仍似好皮,病组织有甜酒味,发病40—50天后,病疤扩展缓慢,随之硬化,后期病疤凹陷,呈黑褐色,病部干燥,并生出黑色小瘤状物,树皮随即开裂。 Pear tree rot disease, also known as sore skin disease, mainly occurs in the trunk and the main branch, the scar initially showed water stains, reddish-brown, edema, scar margins are still like a good skin, the disease has sweet wine taste, the incidence of 40 -50 days later, the scars expand slowly, followed by sclerosis, post-scars depression, dark brown, diseased parts and give birth to black nodules, bark immediately cracking.