水稻纹枯病俗名烂脚瘟,花秆,是水稻主要病害之一。特别是近几年来,随着耕作水平、密植程度提高,施肥量增加,纹枯病日趋严重。水稻发生纹枯病会造成谷粒不饱满,空壳率增加严重的倒伏枯死。一、病状:稻纹枯病是一种高温、高湿的病害,病株由下向上发展。最初在靠近水面叶鞘上发生湿润状的暗绿色小点,后扩大成椭园形或云雾状。中部转灰白色;潮湿 Rice sheath blight common name rotten foot plague, flower stalk, is one of the major diseases of rice. Especially in recent years, with the cultivation level, the degree of close planting increased, the amount of fertilizer increased, sheath blight becoming more serious. Rice sheath blight will cause grain is not full, the shell rate increases serious lodging dead. First, the disease: Rice sheath blight is a high temperature, high humidity disease, diseased plants from the bottom up. Wet dark green dots first appeared near the leaf sheaths of the water, then enlarged into an oval or cloud. Central gray to white; damp