青枯病又叫细菌性枯萎病、褐腐病、洋芋瘟,是一种典型的维管束病害。此病具有传染性和危害性,一旦发病损失严重。主要为害马铃薯的根、茎、叶,最明显的症状是枯萎。一、发病症状(表1)表1马铃薯各部位青枯病的表现症状二、发病原因由青枯假单胞菌引起。病原细菌主要随病株残体在土壤中越冬,侵入薯块的病菌在窖里越冬,无寄主时可在土中腐生14个月至6年。病菌主要通过雨水、灌溉水、肥料、病菌、昆虫、人畜以及生产工具等传 Bacterial wilt, also known as bacterial wilt, brown rot, taro, is a typical vascular disease. The disease is contagious and harmful, if the incidence of serious loss. The main damage to the roots of potato, stems and leaves, the most obvious symptoms are withered. First, the incidence of symptoms (Table 1) Table 1 Potato manifestations of bacterial wilt symptoms Second, the cause of the disease caused by Pseudomonas solanacearum. Pathogenic bacteria with the disease mainly in the soil overwintering in the soil, invaded tubers of bacteria in the cellar wintering, non-host can be saprophytic in the soil 14 months to 6 years. Germs are transmitted mainly through rainwater, irrigation water, fertilizers, germs, insects, animals and livestock, and production tools