梨干枯病又名胴枯病,主要危害中国梨和日本梨,是梨树枝干的重要病害之一,在我国大部分梨区均有发生.本地区为黄花、新世纪等梨品种新区,随着栽培面积及栽培年限的增长,有加重发生的趋势,梨树被害率在5%～10%,严重梨园被害率高达20%左右,受害梨树,轻则造成树势衰弱,重则造成死校或整株死亡,对我县的梨树生产造成了极大的危害. Pear blight, also known as fowl blight, is one of the most important diseases of pear and its branches in most pear regions of our country, The cultivation area and the growth of years of cultivation have aggravating trend. The damage rate of pear tree is 5% -10%, and the rate of serious pear tree damage is about 20%. The damage of pear tree results in the weakening of tree vigor and heavy death School or whole plant died, the county pear production caused great harm.