玉米黑穗病,俗称“乌米”。它是由真菌中的黑粉菌寄生而引起的病害。这种黑粉菌的黑粉孢子个体小,数量多,传播广。一般在秋天成熟后落到地里或残留在作物的秸杆、种子上过冬,来年春播时继续传染作物,如果防治不力,就会造成病菌的大量积累,严重影响玉米产量。因此,在黑粉病菌成熟前拨除病株是防止玉米黑穗病的最有效措施。 Corn smut, commonly known as “Wumei.” It is a disease caused by the parasitic infection of the powdery mildew in the fungus. Black spore of this black powder spores individual small, large number of wide spread. Generally fall into the ground after maturing in the autumn or remain in the straw of crops, the seeds of the winter, the next spring will continue to infect crops, if the prevention and control is ineffective, it will cause a large accumulation of germs, seriously affecting the yield of corn. Therefore, it is the most effective measure to prevent smut of maize before it is matured.