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人参黑斑病是人参生产上的主要病害,直接影响产量和质量,常年发病30—40％,严重时高达90％以上。主要危害计片,也可侵害茎,花梗及果实,在叶尖、叶缘和叶片中间产生近圆形或不规则水浸状褐色病斑,中央稍淡有同心轮纹,干燥后易破裂。严重时病斑扩大汇合使叶片枯死引起早期落叶,茎上病斑长条状,上有黑色霉层,严重时植株折垂倒伏。花梗发病后造成花序枯死,果实与籽实干瘪,形成“吊干籽”。
Ginseng black spot is the main disease in the production of ginseng, which directly affects the yield and quality, with annual incidence of 30-40% and seriousness of more than 90%. The main hazards of tablets, but also against the stems, pedicel and fruit, leaf tips, leaf margins and leaves in the middle of nearly round or irregular blotchy brown spots, the central slightly pale concentric round pattern, easy to rupture after drying. In severe cases, lesion enlargement confluence causes early leaf deciduous leaves, stems on the strip long strip, black mold layer, severe plant lodging collapse. Peduncle caused inflorescence after the onset of disease dead, shriveled fruit and seeds, the formation of “hanging dry seeds.”