近年来,设施蔬菜栽培面积逐年扩大,由于人为创造的温湿度适宜于番茄灰霉病发生流行,导致灰霉病发生越来越重,尤其越冬茬番茄发病普遍,较重棚室减产30%~50%。番茄灰霉病已成为棚室番茄栽培的主要病害。1病害症状灰霉病危害番茄的叶片、花、青果和茎。叶片染病多始自叶尖形成“V”形病斑,向内扩展初为水浸状,后期呈褐色软腐有霉层,隐约可见轮纹。叶柄染病出现褐色软腐着生霉层,易折断。果实染病不论大小都可以受害,病果近萼片处果面出现水浸状灰白色近圆形软腐,迅速向周围扩大,最终可使整个果实腐烂脱落,病部密生灰色霉层。花器染病主要 In recent years, the area of ​​vegetable cultivation has been expanding year by year. Due to the man-made temperature and humidity suitable for the prevalence of gray mold disease in tomato, gray mold disease is more and more serious. In particular, overwintering stubble tomato incidence is generally 30% 50%. Botrytis cinerea has become the main disease of greenhouse tomato cultivation. 1 Disease Symptoms Botrytis infects the leaves, flowers, fruits and stems of tomatoes. Most of the leaves began to form “V” -shaped lesions from the tip of the leaves, which were inwardly inflated into the early stage. Petiole disease appears brown soft decay moldy layer, easy to break. Fruits infected regardless of size can be affected, the fruit near the sepals fruit surface appear flooding-like gray-white near the soft rot, quickly expanded to the surrounding, eventually make the whole fruit decay, the disease dense gray mold layer. Flower main disease