桃疣皮病是我国桃树上一种新病害,主要侵害一、二年生枝条,在皮孔部位形成疣皮症状,引起流胶,致使桃树早衰。该病害在上海市郊及江、浙一带普遍存在,据作者对上海市郊8个县15个果园普查,发病严重果园占49%,株发病率为100%;一般果园占51%,株发病率为31—49%。幼龄树或成年树均可受害,严重威胁桃树生产。因此,作者自1979年起,经6—7年的研究,逐步明确了该病的病原、病害流行规律及药剂防治方法。然而,长期以来将该病害误认为桃树生理性流胶病,不予重视,不加防治,致使该病害得以蔓延,加重为害。至于由真菌所引起的病理性流胶,在国内研 Peach wart disease is a new disease on peach tree in our country. It mainly affects the first-year and second-year branches and forms the symptoms of warts in the lenticels, causing the flow-through of the gum and premature aging of the peach trees. The disease prevails in the suburbs of Shanghai and in the areas of Jiang and Zhe. According to the author’s survey of 15 orchards in 8 counties in the suburbs of Shanghai, the incidence of serious orchards is 49%, the incidence of strains is 100%; the average orchard accounts for 51% 31-49%. Young or adult trees can both suffer, posing a serious threat to peach tree production. Therefore, the author from 1979 onwards, after 6-7 years of research, and gradually clear the pathogen of the disease epidemic rules and methods of prevention and treatment. However, the disease has long been mistaken for physiological peach gum disease, pay no attention to, without prevention and control, resulting in the spread of the disease, aggravating the damage. As for the pathological plastic caused by the fungus gel, in the domestic research