荔枝霜霉病及其防治荔枝霜霉病是荔枝果实上的主要病害，在广东、广西、福建均有发生，发病严重时常引起大量落果和烂果，多雨、天气潮湿的年份，烂果率达３０％～５０％，严重影响鲜果贮运和外销。１症状识别本病主要为害近成熟的果实，有时亦为害青果和叶片。果实受害，... Litchi downy mildew and its prevention and control Litchi downy mildew is a litchi fruit on the main diseases in Guangdong, Guangxi, Fujian have occurred, the incidence is often caused by a large number of fruit drop and rotten fruit, wet, humid weather, rotten fruit rate reached 30% ~ 50%, seriously affecting the storage and export of fresh fruits. 1 Symptoms Identify the disease is mainly damaged near-mature fruit, and sometimes harmful fruit and leaves. Fruit victims, ...