玉米是我州种植的主要粮食作物,常年播种面积13333hm2左右,占整个粮食播面的29%,占粮食总产量的42%,在我州粮食生产中具有举足轻重的地位。近年来,玉米丝黑穗病发生与为害逐年加重,成为危害玉米的主要病害,严重威胁玉米生产发展。据调查,该病在海拔2000m以上的半山和高半山区发生较重,发病面积达3333hm2,占玉米播种面积的25%,一般田块发病率4-11%,严重田块达42%以上,产量损失一般为4-11%,重者达42-70%。由丝黑穗病的发生而引发的种子纠纷事件,不仅造成严重的经济损失,而且也影响着社会的稳定。为此,笔者通过调查,分析了丝黑穗病发生的原因,结合实际提出可行的综合防治技术,供参考。 Maize is the main grain crop planted in our state. The perennial planting area is about 13333hm2, accounting for 29% of the whole grain sowing area and accounting for 42% of the total grain output. It plays a decisive role in grain production in the state. In recent years, the occurrence and damage of maize head smut have increased year by year, becoming the main diseases that endanger maize and threatening the development of maize production. According to the survey, the disease occurred more than half of the mountain at mid-2000m and the high-altitude mountainous area, with an area of ​​3333hm2, accounting for 25% of the sown area of ​​corn. The incidence of common field was 4-11% and severe field was over 42% Yield loss is generally 4-11%, heavy up to 42-70%. The seed disputes caused by the occurrence of smut have not only caused serious economic losses but also affected the stability of the society. To this end, the author through the investigation, analysis of the causes of head smut, combined with the actual proposed viable integrated control technology for reference.