小麦赤霉病是我国长江中下游和西南冬麦区的常发病害,在山东省一直发生较轻。1998年山东各地都有不同程度发生,许多重病区造成严重减产。一、发生特点赤霉病可引起小麦苗腐、基腐和穗腐。据观察,在聊城市主要表现为穗腐(枯)症状。穗腐在小麦开花后发生,初在小穗颖壳上出现淡褐色水渍状病斑,在 Wheat scab is a common disease in the middle and lower reaches of the Yangtze River and winter wheat in the southwest of China. It has been relatively mild in Shandong Province. In 1998, Shandong Province had various degrees of occurrence all over the country, and many seriously ward areas caused serious cuts in output. First, the occurrence of the characteristics of scab can cause wheat seedling rot, rot and basil rot. It is observed that in Liaocheng City, the main symptoms of ear rot (dry). Spike rot occurs after the flowering of wheat, early in the spikelet glume on the light brown water stain-like lesions, in