灰霉病是冬春季棚室番茄栽培中常见的一种病害,主要危害花、幼果及叶片,具有传播快、危害重等特点,常造成大量果实腐烂,给菜农带来严重的经济损失。棚室番茄生产中要采取以预防为主的综合防治措施。一、发病特点:灰霉病发病适温20-23℃,相对湿度在90%以上,低温、高湿、 Botrytis cinerea is a common disease in greenhouse cultivation in winter and spring in greenhouse. It is harmful to flowers, young fruits and leaves. It has the characteristics of fast spread and heavy damage. It often causes a lot of fruit decay and brings serious economic losses to vegetable farmers. Greenhouse tomato production to take prevention as the main integrated control measures. First, the incidence characteristics: onset of gray mold temperature 20-23 ℃, relative humidity above 90%, low temperature, high humidity,