高粱丝黑穗病为害症状:主要在穗上发生。受害高粱穗整个变成一个大灰包,外膜破裂后,散出大量黑粉,同时露出一束束散卵的丝状物(即维管束),少数情况下,仅部分花絮被害,或者端部的叶片上产生明显的灰色小瘤,外膜破裂后,叶片维管束同样不破裂。主秆的丝黑穗打掉后,继续长出的分蘖穗仍为丝黑穗。 Sorghum smut symptoms: mainly in the spike occurred. The affected sorghum spike becomes a large gray pack. After the rupture of the outer membrane, a large amount of black powder is exuded and a bundle of scattered filaments (ie, vascular bundles) are exposed. In a few cases, only a few of the harms are harmed, Ministry of the leaves on the obvious gray nodules, rupture of the outer membrane, the vascular bundle does not rupture the same. Main stalk silk black spike destroyed, continue to grow tillering spike is still black silk.