人参疫病在我国人参主产区辽宁、吉林、黑龙江等省普遍发生,侵害人参叶、茎及根部。叶、茎受害时,产生褐色水浸状无边缘的病斑,病部软化,引起叶片萎垂,严重时病株折倒死亡。根部受害时,病部呈黄褐色水浸状,逐渐扩展并软化,根皮易剥离,有腥臭味,溃烂流水。发生、侵染、传播规律人参疫病是由疫霉属真菌引起, Panax ginseng disease is common in Liaoning, Jilin, Heilongjiang provinces and other provinces in China’s ginseng main producing areas, and affects ginseng leaves, stems and roots. Leaves, stem victims, resulting in brown flooding no border lesions, softening of the disease, causing leaf wilting, serious illness when the plant fell to death. Root damage, the disease was yellowish-brown flooding, and gradually expand and soften the root skin easy to peel, stench, ulceration. Occurrence, infection, transmission of ginseng disease is caused by Phytophthora fungi,