水稻白叶枯病和条斑病是水稻的两种检疫性细菌病害。危害性很大,发病后叶子早枯,一般减产10～20%。条斑病在我省尚未发现,必须严防传入。病害识别:白叶枯病多先从叶尖或叶缘发生,扩展不受叶脉限制,病 Rice bacterial blight and leaf spot disease are two quarantine bacterial diseases of rice. Harmful, leaves early after onset disease, the general cut 10 to 20%. Streak disease in our province has not been found, we must prevent the introduction. Disease identification: bacterial leaf blight first occurred from the tip or leaf margin, expansion is not limited by the veins, disease