目前,小麦纹枯病在我省冬麦区已有不同程度的发生。1998年邯郸发生70多万亩,邢台、保定也相继发生。由于大量纹枯病菌原的存在,加之去年冬季偏暖,小麦生长势旺,群体偏大,如果4—5月间出现连阴雨天气,纹枯病将会流行。因此,对小麦纹枯病的监测和防治工作不容轻视。小麦纹枯病在春季的主要特征是:叶梢上出现椭圆形病斑,病健界限较明显,病斑边缘深褐色,中间灰 At present, wheat sheath blight in winter wheat in our province have varying degrees of occurrence. Handan occurred more than 70 acres in 1998, Xingtai, Baoding have also occurred. Due to the presence of a large amount of Rhizoctonia solani, coupled with the warmer winter last year, the wheat grew vigorously and the population was relatively large. If any rainy weather occurs between April and May, the sheath blight will be prevalent. Therefore, the monitoring and control of wheat sheath blight should not be underestimated. Wheat sheath blight in spring is characterized by: oval lesions appear on the tip of leaves, more clear health and disease boundaries, the edge of dark brown spots, gray