小麦赤霉病,俗称麦穗枯、烂麦头、红麦头,是世界性麦类流行性病害,尤以多雨潮湿的温带地区发生严重,主要发生在长江中下游及淮河以南地区,近年来,由于小麦机械收割的程度不断提高,秸秆大量还田,麦糠吹散在田间,使小麦赤霉病发生逐渐加重,一般流行年份可减产10%～20%,严重的达 Wheat head blight, commonly known as wheat ear rot, rotten wheat head, red head, is a worldwide wheat disease epidemic, especially in rainy and humid temperate regions serious, mainly in the middle and lower reaches of the Yangtze River and south of the Huaihe River in recent years Since the degree of wheat mechanical harvesting continued to increase, a large number of straw returning to the field, wheat bran blown in the field, so that the occurrence of wheat head blight gradually increased, the general popular year can be reduced by 10% to 20%, a serious up