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期 刊 ：植物保护学报 1999年

关键词：小麦；丛矮病；灰飞虱；介体带毒率；

Keywords:wheat rosette stunt, Laodelphax striatellus, viruliferous rate of vector,

摘 要 ：１９９３年通过重病区的系统调查和流行因素定量测定，明确在灰飞虱是小玫丛矮病最主要的介体，占飞虱种群的９５％以上。灰飞得在中肋地区１年发生３代，在麦茬、草根、土缝内越冬，老熟带毒若虫和成虫是次年主要的初侵染源，其数量和带毒率与小麦全矮病发病率之间具有线性关系。回归求得如下关系：Ｙ＝０．１８２３Ｚ１－５．７４１８Ｘ２－０．０３０９９Ｘ３＋１．１４０４Ｘ４。病情与小麦受侵洒时期密切相关。田间试验表明，三

Abstract:Systematic field survey and the quantitative analysis of epidemiological factors indicated that Laodelphax striatellus was the major vector of rosette stunt in wheat and it made up 95% of planthopper population. There were three generations in Hulun-beir

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