水稻纹枯病是水稻一生中为害时间最长的１种病害，在宜兴市每年均可达偏重至大发生程度，纹枯病的为害损失一般年份已超过了稻飞虱。８０年代中期以来，纹枯病的防治一直困扰着水稻病虫总体防治的实施，主要问题是现今防治纹枯病的主导药种井冈霉素防病持效期较短，而两次... Rice sheath blight is one of the diseases with the longest duration of damage in rice. In Yixing City, annual occurrence of rice sheath blight is more than that of large planthopper. The damage caused by sheath blight has exceeded that of planthopper in general years. Since the mid-1980s, the control of sheath blight has plagued the implementation of the overall prevention and control of rice pests and diseases. The main problem is that the prevailing species of Jinggangmycin, the leading drug against sheath blight, has a short duration of protection and is twice ...