我县是江淮丘陵南部以双季稻为主的稻区,水稻白叶枯病(Xanthomonas oryzae Dow- son)是我县双季晚稻(下称双晚)上的主要病害。目前我们对双晚白叶枯病的预报主要是于天气状况的超前预报目前尚不过关,因而影响了双晚白叶 My county is the southern part of the Jianghuai Hilly region, which is dominated by double cropping rice. Xanthomonas oryzae Dowsonis is the main disease in double cropping late rice (hereinafter referred to as double cropping) in our county. At present, our forecast for double late blight is mainly due to the fact that the advanced forecast of the weather conditions is not yet closed, thus affecting the double night white leaves