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水稻纹枯病是沿江地区水稻上常发性、重发性和盛发、为害期长的主要病害。随着水稻高产及超高产品种的推广应用、水稻施肥量的增加、水稻轻型栽培面积的扩大,以及气候条件的异常,水稻纹枯病发生危害日趋严重。自2009年以来,水稻纹枯病已连续7年发生较重,造成部分水稻田出现“冒穿到顶、枯死倒伏”的现象,严重的田块水稻产量损失30%~45%。因此,有效控制水稻纹枯病,已成为水稻生产可持续
Rice sheath blight is a major disease on paddy rice in the Yangtze River that is often recurrent, recurrent and full-blown. With the popularization and application of high yield and super high yielding varieties of rice, the increase of fertilizing amount of rice, the expansion of light cultivating area of rice, and the abnormal climatic conditions, the occurrence of sheath blight of rice is more and more serious. Since 2009, the sheath blight of rice has been seriously affected for seven consecutive years, resulting in the phenomenon that some paddy fields appear “to wear to the top and fall dead”. The yield of serious paddy rice has been reduced by 30% -45%. Therefore, the effective control of rice sheath blight has become a sustainable rice production