水稻白叶枯病[Xanthomonas oryzae(Uyead et Ishiyama)Dowson]是一种细菌性病害,分布广,为害重,目前全国除新疆和东北北部外,凡水稻产区都有本病发生.据有关研究,温度、湿度和降水量与白叶枯病的发生密切相关,一般认为气温26—30℃,相对湿度80%以上,多雨,日照不足,风速大,有利于本病的发生流行.新疆 Rice bacterial blight [Xanthomonas oryzae (Uyead et Ishiyama) Dowson] is a bacterial disease, widely distributed and seriously damaging. At present, except in Xinjiang and northern part of northeast, the disease occurs in all rice producing areas. According to relevant research The temperature, humidity and precipitation are closely related to the occurrence of bacterial blight. It is generally believed that the temperature is 26-30 ℃ and the relative humidity is above 80%. Rainy, lack of sunshine and large wind speed are favorable for the occurrence of this disease.