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韭菜疫病是韭菜生产中的重要病害,是由鞭毛菌亚门疫霉属真菌引起的,除为害韭菜外,还为害葱、洋葱、蒜、茄子、番茄等。症状叶片上出现水浸状暗绿色病斑,病斑扩展到半个叶片时叶片变黄、下垂、软腐,湿度大时病部长出灰白色霉状物。假茎受害呈浅褐色,软腐,叶鞘易脱落.潮湿时病部也长出灰白色稀疏的霉层。鳞茎受害时根盘呈水浸状,浅褐色至暗褐色,腐烂,纵切茎可见内部呈浅褐色,生长受抑
Leek blight is an important disease in the production of chives, is caused by Flammulina Phytophthora fungi, in addition to harmful leeks, but also harmful onions, onions, garlic, eggplant, tomatoes and so on. Symptoms appear flooding-like dark green spots on the leaves, lesions extend to half of the leaves when the leaves turn yellow, drooping, soft rot, humidity, Minister of disease out of gray-white moldy. False stem damage was light brown, soft rot, leaf sheath easy to fall off .When damp disease also grow gray white sparse mildew. Bulb damage when the root disk was soaked, light brown to dark brown, decay, vertical cutting stem visible light brown interior, growth inhibition