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１９９２～１９９４年，在沈阳市辽中县乌伯牛乡设置试验点，对水稻纹枯病病菌越冬菌核密度、病株初侵染病斑密度、扩展趋势、流行病情等进行了调查研究，结果表明：病菌菌核越冬密度与前茬水稻病情密切相关。水稻纹枯病的发病始期为６月下旬至７月上旬，盛发（病情陡增）期为７月下旬至８月上旬；水稻孕穗期至圆秆期是病害流行的关键时期；供试水稻品种对纹枯病抗性有差异，但无免疫者。
From 1992 to 1994, a pilot program was set up in Wueriu Township, Liaozhong County, Shenyang City to investigate the density of overwintering sclerotial bacteria, virulent spot density, spreading trend and epidemic situation of R. solanacearum, The results showed that the overwintering density of pathogen was closely related to the disease of rice in the previous crop. The onset of rice sheath blight was from late June to early July, and Shengfa (the state of sharp increase) was from late July to early August. The booting stage and round stems of rice were the critical period of disease epidemic. Varieties have different resistance to sheath blight, but no immunity.