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马铃薯早疫病、晚疫病是马铃薯生产中危害比较严重两种病害,由于两种病害名称相近,症状相似,很容易混淆,往往在防治上陷入误区。因此正确识别早晚疫病,对马铃薯种植户及农业技术人员指导马铃薯生产具有重要意义。一、病原菌不同马铃薯早疫病主要由半知菌纲链格孢属茄链格孢引起的。马铃薯晚疫病由鞭毛菌亚门致病疫霉引起的。二、症状不同早疫病可发生在叶片上,也可侵染块茎。叶片染病病斑黑褐色,圆形或近圆形,具同心轮纹,
Early blight of potato, late blight is more serious harm to the potato production of the two diseases, due to similar names of the two diseases, the symptoms are similar, it is easy to confuse, often in the prevention and control into a misunderstanding. Therefore, the correct identification of early and late blight, for potato farmers and agricultural technicians to guide the production of potatoes is of great significance. First, the pathogen different early blight potato is mainly caused by Alternaria Alternaria Alternaria solanacearum caused. Phytophthora infestans caused by late blight of potato. Second, the symptoms of different early blight can occur on the leaves, but also infect tubers. Leaf spot disease dark brown, round or nearly circular, with concentric wheel pattern,