梅花枝斜出,暗香浮动,人皆喜爱。但有时在既非营养失调,又未遭受污染,也没有施药不当的情况下,却会出现植株长势衰弱、叶色变黄而早落、甚或濒临死亡的现象。检查根部,如果发现下述症状,即说明患了根癌病。根癌病的明显症状多出现于茎干基部(根茎部),其次为侧根及支根。发病部位形成瘤状物(根癌病即因此而得名),形态各异,大小不一,初为灰白色或略带红色,外表光滑,质地柔软,以后变为褐色至深褐 Plum branches oblique, subtle fragrance floating, everyone likes. However, in some cases, neither the nutrition nor the pollution nor the improper spraying of pesticides may cause the plants to grow weak, the leaves turn yellow, fall prematurely, or even die. Check the root, if you find the following symptoms, that is suffering from root cancer. The obvious symptoms of root cancer appear in the base of the stem (rhizome), followed by the lateral roots and branches. The incidence of formation of tumor parts (hence the name of cancer of the root cause), different shapes, sizes, initially gray or reddish, smooth appearance, texture soft, later turned brown to dark brown