李树流胶病主要为害枝干,果实也可以流胶。主干、主枝受害后,病部隆起,并流出树胶,雨后病情加重。树胶干燥后变为红褐色至茶褐色坚硬块状物。枝上病斑多时,常大量流胶,导致树势衰弱,严重者枝干枯死。果实染病,有黄色胶质溢出果面,病部硬化,后期发生龟裂,严重影响商品价值。李树流胶病在生长期均可发病,而在高温、高湿的6~8月为发病盛期。树体的物理伤害,如人为的机械损伤和 Li Shuyujiaojiao main damage stems, fruits can also gel. After the main branch and main branch have been injured, the diseased part bulges and flows out of the gum, which aggravates after the rain. The gum turns red-brown to brownish-brown lumps after drying. Branches of lesions for a long time, often a large number of plastic flow, resulting in frail weakness, severe dry branches. Fruit disease, yellow gum overflowing the fruit surface, hardening of the disease, the latter occurred cracking, seriously affecting the value of the commodity. Li Shuyu meningitis can be disease in the growth phase, and in the high temperature, high humidity 6 to August for the peak incidence. Tree physical damage, such as artificial mechanical damage and