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果树常见的烂根病主要有7种,其中白绢病、根朽病、紫纹羽、白纹羽、圆斑根腐病是由真菌引起的,另两种是细菌性病害,叫做根瘤病和毛根病.这些病有的是在根颈嫁接口处发病(白绢病),有的是从根颈开始沿木质部向根系和向地上都发展(根朽病),紫纹羽和白纹羽病则从小根发病,向大根发
There are mainly 7 kinds of rotten root diseases in fruit trees, among which, sclerotium, root rot, purple streak feather, white streak feather, spot root rot are caused by fungi and the other two are bacterial diseases called root nodule disease And hair root disease, some of which are at the root neck grafting incidence (Sclerotinia), some from the root neck along the xylem to the root system and to the ground (root rot), purple and white pattern feather disease from childhood Root disease, to the root hair