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1病状病害发生于茎部或地下主侧根,发病初期呈暗褐色,后绕茎基或根茎扩展,致皮层腐烂,底部叶片变黄,果实膨大后因养分供应不足逐渐萎蔫枯死。后期茎部表面常形成黑褐色大小不一的病斑,别于早疫病。2病源茎基腐病是一种真菌性病害,雨水过多、温度过高是诱发此病的...
1 disease disease occurs in the stem or underground side of the main root, the early dark brown, after the expansion around the base or rhizome, causing cortical decay, the bottom of the leaves turn yellow, fruit enlargement due to insufficient supply of nutrients gradually wilting dead. Late stem surface often form dark brown spots of different sizes, different from early blight. 2 pathogen stem rot is a fungal disease, excessive rainfall, the temperature is induced by the disease ...