花生根茎腐病是花生根腐病、根颈腐病的统称,是花生整个生育期的一种病害,严重时可使花生苗期植株大面积死亡,造成大幅度减产。一、发病症状:花生根腐病在苗期主要侵染刚萌发的种子,造成烂种;幼苗受害,主根变褐,植株枯萎。成株受害,主根根颈上出现凹隐长条形褐色病 Peanut root rot is a perennial root rot, root rot of the neck collectively, is a peanut throughout the growth of a disease, severe peanut seedlings can make a large area of ​​death, resulting in significant yield. First, the incidence of symptoms: peanut root rot mainly in the seedling stage of freshly germinated seeds, causing rotten species; seedling victims, the main root brown, withered plants. Adult damage, the main root root neck depression concave long brown barley disease