一、晚疫病的症状番茄晚疫病从苗期一直到结果期都可能发生,既危害叶片,又危害茎秆和果实,以叶和果实受害最重。一般从棚室前端开始发病,先侵染叶片和幼果,逐渐向茎秆、叶柄蔓延致使其变成黑褐色,严重时植株萎蔫折断。病果果实坚硬,凹凸不平,初期呈油渍状暗绿色,后变成暗 First, the symptoms of late blight Late blight tomato from the seedling until the end of the period may occur, both endanger the leaves, but also endanger the stalks and fruits, leaves and fruits hardest hit. Generally start from the front of the shed disease, the first infested leaves and young fruit, and gradually to the stalk, petiole causing it to become dark brown, severe wilt plant broken. Fruiting fruit hard, bumpy, early was a dark greenish-like grease, then turned dark