水稻纹枯病综合防治研究Ⅰ．辽宁水稻纹枯病发生规律初探  

Integrated Management of Rice Sheath Blight Ⅰ. A Preliminary Study on the Regularity Outbreak of Rice Sheath Blight in Liaoning Province

作　　者：刘志恒[1] 王小奇[1] 俞孕珍[1] 丁秀云[1] 黄峰[1] 刘桂清 林洪祥[1] 苏健 何家树 郑文华[1] 

机构地区：[1]沈阳农业大学,沈阳市辽中县

出　　处：《辽宁农业科学》1995年第4期3-6,共4页Liaoning Agricultural Sciences

摘　　要：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。Abstract The results of the experiments in 1992～1994,Showed that the number of overwinteringpathogen sclerotinia was related to the state of rice sheath blight last year; The initial stage ofsheath blight was the period of tim1e from the last ten days of June to the first ten days of Julyand the widespread stage from the last ten days of July to the first ten days of August, the vari-eties of rice tested had not immunity but had different resistance to sheath blight.

关 键 词：水稻 纹枯病 发生规律 综合防治 辽宁 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]