赤霉病是我国小麦和大麦生产上的一种严重病害。大流行年份病穗率高达50%～100%,减产10%～40%;中流行的年份病穗率达20%～30%,减产5%～15%。小麦遭受赤霉病侵害后,不但造成减产,而且对于种子的质量和食用价值也有严重影响。带菌的麦穗在潮湿的麦堆中,或带菌种子在湿度超过标准的仓库中,能继续感染而导致霉烂,造成损失。受害严重的籽粒皱缩空瘪, Fusarium head blight is a serious disease in the production of wheat and barley in our country. In the pandemic year, the disease panicle rate is as high as 50% ~ 100% and the yield is reduced by 10% ~ 40%. In the prevailing years, the panicle disease rate is 20% ~ 30% and the yield is reduced by 5% ~ 15%. After wheat has been hit by scab, it not only reduces production but also has a serious impact on the quality and edible value of the seeds. Infected ears of wheat are in damp mounds, or carry contaminated seeds in a humidity-out-of-standard warehouse that can continue to infect causing mildew and loss. Severely damaged grains shriveled,