水稻纹枯病俗称花脚杆、烂脚杆,在亚洲、美洲、非洲种植水稻的地区普遍发生。此病一旦发生,会造成叶片枯死、结实率下降,甚至植株全部枯死。一般造成减产10%～30%,严重时达50%以上[1]。由于发生面积广、流行频率高,其 Rice sheath blight, commonly known as pedicel, rotten foot, is common in areas where rice is planted in Asia, the Americas, and Africa. Once the disease occurs, it will cause the leaves to die, the seed setting rate will drop, and even the plants will all die. The general result in cut 10% to 30%, severe up to 50% or more [1]. Due to the occurrence of a wide area, the prevalence of high frequency