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绚丽的樱花深受人们喜爱,但它却容易感染一种致命的病——根癌病。此病主要发生在樱花的根部及地上部分的主干和侧枝上。发病初期,根茎处膨大呈球形或半球形的瘤状物,幼瘤为白色,质地柔软,表面光滑。以后瘤渐增大,质地变硬,褐色或黑褐色,表面粗糙、龟裂,由根茎处开始逐渐侵染到主根、侧根甚至毛细根,各节部膨大呈大小不等的肿瘤,致使樱花生长缓慢甚至停止生长,3～5年整株枯死。幼苗发病率较高,尤其是嫁接苗(?)木的接穗结合部。
Brilliant cherry blossom loved by people, but it is vulnerable to a deadly disease - root cancer. The disease occurs mainly in the cherry and the aerial parts of the trunk and collateral branches. Early onset, the dilated rhizome spherical or hemispherical tumor, the tumor is white, soft texture, the surface is smooth. After the tumor gradually increased, the texture hardens, brown or dark brown, rough surface, cracking, starting from the rhizome began to gradually infiltrate the main root, lateral root or even capillary root, the joints of various sizes swollen tumors of varying sizes, resulting in cherry growth Slow or even stop growing, 3 to 5 years whole plant died. Seedling incidence is higher, especially in grafted seedlings (?) Wood scion junction.