日本自1953年在九洲地区水田中发现了白叶枯病菌的噬菌体 op_1以后,又发现了 op_1h、op_1h_2和 op_2,这些噬菌体只寄生在白叶桔病病菌上,在培养的白叶枯病病菌上形成溶菌斑。由于稻田水中噬菌体的数量与病菌的数量成正相关,病菌大量繁殖时,噬菌体也迅速增殖起来,因此,可用溶菌斑量的多少来预报水稻白叶枯病的发病情况。 Since 1953, the bacteriophage op_1 of X. oryzae was discovered in the paddy fields of Jiuzhou, Japan. In addition, op_1h, op_1h_2 and op_2 were also found. These phages were only parasitic on the pathogen of the leafy mildew, On the formation of bacteriolytic spots. Because of the positive correlation between the number of phage in rice water and the number of pathogens, the number of bacteriophages also rapidly proliferated when the bacteria proliferated. Therefore, the amount of bacterioplast can be used to predict the incidence of bacterial leaf blight in rice.