麦类赤霉病是一种世界性病害,在潮湿和半潮湿地区发病尤重,造成穗腐和粒腐,严重影响大小麦的产量和品质。本世纪60～70年代,日本、南朝鲜、南斯拉夫、罗马尼亚等国赤霉病多次流行。在美国麦类赤霉病流行波及大麦、燕麦和黑麦。我国长江中下游各省历年均有发生,我省大小麦抽穗扬花期间适逢雨季,病害更为严重,仅解放以来 Scab belongs to a worldwide disease, especially in humid and semi-humid areas, causing spikes and rots, which seriously affect the yield and quality of wheat and wheat. In the 1960s and 1970s, Japan, South Korea, Yugoslavia and Romania were among the most popular blight. The spread of scab in the United States affects barley, oats and rye. All provinces in the middle and lower reaches of the Yangtze River in our country have experienced over the years. During the flowering and flowering of wheat and wheat in our province, the rainy season coincides with the rainy season and the diseases are more serious. Since the liberation