流胶病是李树上一种危害性较大的病害，在李产区发生普遍。该病主要感染李树侧枝上１－２年生枝条。胭脂李、玫瑰李、芙蓉李等品种均可发病，但以芙蓉李受害最重，发病严重时整个枝条枯死。多年受害的李树树势衰弱，产量和品质下降，最后全体逐渐枯死。过去认为此病是由于树体 Silicosis is one of the more harmful diseases in the plum tree, which is common in the Li producing areas. The disease is mainly infected with 1 to 2 years on the branches of plum tree branches. Rouge plum, rose plum, hibiscus plum and other varieties can be disease, but the most affected victims of hibiscus, the incidence of serious death of the entire branches. Li Shushu, who has been victimized for many years, is weak, her output and quality are declining, and eventually her body is gradually dead. In the past that the disease is due to the tree