苹果早期落叶病的发生与防治

Occurrence and Control of Apple Early Leaf Defoliation Disease

在陕西兴平市,早期落叶病在富士品种上以褐斑病为主,在松本锦上以斑点落叶病为主。苹果褐斑病5-6月始发,7-8月进入发病高峰期,苹果斑点落叶病一年有春梢期和秋梢期两个发病高峰。防治时主要抓住4个关键环节:适时喷药、对症下药、提高喷药质量、病虫兼职。

In Xingping City,Shaanxi Province,the early leaf defoliation disease was mainly brown spot disease on Fuji variety,and spotted leaf litter disease on matsuben brocade.Apple brown spot disease starts from May to June,and enters the peak of incidence in July to August.Apple spotted leaf defoliation disease has two peak of incidence in spring and autumn.Four key links should be grasped in the prevention and treatment:timely spraying,appropriate medicine,improving spraying quality,part-time work of diseases and insects.