摘要
为了准确诊断马铃薯生理性叶斑病，对该病害进行了室内鉴定和田间调查。结果表明：马铃薯生理性叶斑病是由于刮风，使叶片间互相摩擦、叶片与地面摩擦、叶片被大风吹翻转后雨滴的直接击打或雨滴溅起的泥沙击打，从而使叶肉组织受到坏死后形成的斑点；该病典型症状为病斑褐色，有时有光泽，圆形或不规则，1-5mm大小，有时多个病斑愈合；病斑周围无晕圈，无霉层或菌脓菌胶等病征，且病斑多，分布较均匀。
In order to diagnose potato noninfectious leaf spot, we carded out lab identification and field investigation. The results showed that the cause of potato noninfectious leaf spot is wind, which causes the mutual friction between the leaves, friction of leaves and ground, and the direct betteries of raindrops and sand that splashed by the rain when leaves are blowed over. Thereby tissue of leaves come in for the damage, then produced spot on leaves after necrosis. The typical symptom of the disease is brown. Sometimes the symptom is shiny. The form of spot is round or irregular, and the size is 1-5 mm. Sometimes more than one lesion is healed together. There is no halo and mold layer around the lesion. The number of spots is large and the distribution is uniform.
出处
《中国马铃薯》
2012年第4期231-234,共4页
Chinese Potato Journal
基金
贵州省重大攻关项目[黔科合重大专项字(2008)6009]
关键词
马铃薯
生理性叶斑病
症状
诊断
potato
noninfectious leaf spot
symptom
diagnosis
