建湖县以稻麦连作为主。进入 90年代 ,随着以武育粳品种为主体的高产感病品种种植面积的不断扩大 ,以及稻田无机氮肥施用量的增加 ,单季中稻纹枯病的发生呈加剧趋势。近几年来每年都呈中等偏重以上发生。作者根据当地纹枯发生为害的新特点 ,对改进防治技术进行了探索 ,并在大面 Jianhu County with wheat and wheat even as the main. In the 1990s, with the continuous expansion of the planting area of ​​high-yielding susceptible cultivars mainly composed of Wuyujing varieties and the increase of inorganic nitrogen fertilizer in paddy fields, the occurrence of sheath blight in single season was aggravating. Over the past few years were moderately above occurred. Based on the new characteristics of the local wilt, the author explores the improvement of control technology,