山楂是我国特有的果树,栽培历史悠久,我国北起黑龙江、辽宁,南至云南、广东等省均有栽培.但长期以来管理粗放、病虫成灾、产量低、品质劣,研究工作不多.近年来随着生产发展,研究工作在一些省市已有开展.为适应生产发展,现将我国已确认的山楂病害及其防治方法介绍于后,供参考.一、山楂枯梢病此病在山东省山楂产区发生普遍,辽宁、河北山楂产区也有发生.该病主要为害特点 Hawthorn is a peculiar fruit tree in our country and has a long history of cultivation. Northern China has cultivated in Heilongjiang, Liaoning and South Yunnan, Guangdong and other provinces. However, extensive management, long-term pests and diseases, low yield, poor quality and low research work have long been carried out In recent years, with the development of production, research work has been carried out in some provinces and cities.In order to adapt to the development of production, now we have identified the Hawthorn disease and its prevention and treatment introduced later for reference. Common in the hawthorn producing areas in Shandong Province, Liaoning, Hebei hawthorn producing areas have also occurred. The main characteristics of the disease damage