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症状:大蒜叶枯病是由半知菌亚门格孢(菌)属侵染引起的真菌病害。主要为害叶和花梗。发病部位自叶尖或叶的其他部位开始,逐渐扩散、蔓延。病斑初为苍白色小圆点,扩大后呈椭圆形,为灰白色或灰褐色。病部生黑色霉状物,严重时病叶枯死。花梗受害易从病部折断,最后病部散生许多黑色小粒点。被害植株,轻者失去食用价值,重者严重减产,甚至无收。防治方法:1.农业防治:首先要清除
Symptoms: Garlic leaf blight is a fungal disease caused by the infestation of Candida semperius. The main damage leaves and pedicels. The incidence of parts from the leaf tip or other parts of the leaves began to gradually spread and spread. Lesions initially pale dots, enlarged oval, gray or gray-brown. Disease black moldy students, in severe cases sick leaves die. Pedicel damage easy to break from the disease, and finally the Ministry of Health scattered many black small particles. Victims of plant loss, light loss of food value, serious serious production cuts, or even confiscated. Prevention and treatment methods: 1. Agricultural control: first of all clear