桃树流胶病,现称“疣皮病”,是桃树主要病害之一,主要危害桃树的主干和主枝,尤其一、二年生枝条受害最重。最初在枝条皮孔部位产生疣状突起,后扩大4毫米左右的疣状病斑,上散生针头状小黑点(分生孢子器)。一般当年不流胶,到第二年春、夏间病斑再扩大,表皮破裂,溢出树脂,致使表皮粗糙变 Peach gum disease, now known as “warts disease” is one of the main pests disease, the main pests and main branches of the main peach trees, especially the most serious victims of perennial branches. Initially in the branches of leprosy produce verrucous processes, after the expansion of verrucous lesions about 4 mm, scattered on the needle-shaped black dots (conidia). The general current year is not plastic, to the second spring, summer and then expand the lesion, the epidermis rupture, overflow resin, resulting in epidermal rough change