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高粱黑穗病包括丝黑穗病、散黑穗病、坚黑穗病、花黑穗病和长(粒)黑穗病等五种。前三种在我区普遍发生,为害高粱的整个穗部,使产量受到很大损失.其中,丝黑穗病最严重,散黑穗病发病较轻,坚黑穗病发生较少.花黑穗病和长(粒)黑穗病(仅在包头郊区发现),只为害穗部少数籽粒,发病率较低,对产量影响不大.1、高粱丝黑穗病,也叫头黑穗病。一般病株比健株略矮小,颜色也稍浓.病穗的苞和叶包得较健株紧实,略向一边歪曲,下部较膨大,整个穗部被破坏,且外包有白色被膜的元柱
Sorghum smut includes five kinds of head smut, scattered smut, strong smut, flower smut and long (grain) smut. The first three species commonly occur in my area, damage to the whole ear of sorghum, the yield suffered a great loss of which the most serious smut, casual smut less incidence of smut less incidence black The ear disease and the long (grain) smut (only found in the suburbs of Baotou), only for the ear spike a few grains, the incidence is low, little impact on yield.1, sorghum smut, also known as head smut . General diseased plants slightly shorter than the healthy plants, the color is also slightly thick. The ear panicles and leaves wrap more firm than the firm, slightly to the side of the distortion, the lower part of the more swollen, the entire spike is damaged, and the outsourcing of a white envelope yuan column