通过对玉米纹枯病发生规律及防治技术研究 ,结果表明 ,玉米纹枯病产量损失与病情严重度级别之间存在着显著正相关。一般苗期很少发病 ,喇叭口期至抽雄期始病 ,抽雄期开始扩展蔓延 ,灌浆期至成熟期病情垂直发展最快 ,是危害的关键时期。初侵染源为越冬菌核及病残体。品种间发病差异明显 ,目前生产上应用的毕单 3号、毕单 4号、赫单 4号等属中抗品种 ,丰产性好 ,结合及时摘除病叶、病鞘以及对重病地块在抽雄期喷井岗霉素 ,可作为防治措施推广应用 The results showed that there was a significant positive correlation between the yield loss of maize sheath blight and the severity of maize sheath blight. Few seldom incidence of seedling stage, bell stage to tasseling onset, tasseling period began to spread and spread, filling stage to mature stage of the fastest vertical development, is the critical period of harm. The primary source of infection is overwintering sclerotium and diseased body. The obvious difference between the incidence of varieties, the current production of Bi Bi No. 3, Bi No. 4, Hejian 4 and other medium resistant varieties, good yield, combined with the timely removal of diseased leaves, sheath disease and seriously ill land in the tasseling Injecting Kongangmycin, can be used as a control measure to promote the application