梅树流胶病是梅树枝干上最重要的病害,严重威胁着青梅生产的发展,为此,我们于1986—1988年对该病害开展了一些研究工作,现将病原菌鉴定部分研究结果简单的报告如下。(一)枝枯型流胶病1.症状这类流胶病主要发生在枝条上,其次是树干。在小枝上以叶痕,皮孔为中心形成褐色小斑点,后扩大形成边缘红褐色,中间灰白色,大小约1—2×2—4cm,后期在病斑上形成小黑点,即病原菌的 Plum mellitus is the most important disease on the branch of plum tree, which seriously threatens the development of plum production. For this reason, we carried out some research work on this disease from 1986 to 1988, and now the results of some studies on pathogen identification are simple The report is as follows. (A) sclerogistic meningitis 1. Symptoms This type of meningitis occurs mainly in the branches, followed by the trunk. On the branchlets with leaf marks, lenticels as the center of the formation of small brown spots, after the expansion of the formation of red-brown edge, the middle of the gray-white, about the size of 1-2 × 2-4cm, the latter form a small spot on the lesion, the pathogen