| 东北春小麦丛矮病流行规律研究 |
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| 引用本文： | 吕军,刘学敏,张春泉,张明厚.东北春小麦丛矮病流行规律研究[J].植物保护学报,1999,26(1):44-49. |
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| 作者姓名： | 吕军 刘学敏 张春泉 张明厚 |
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| 作者单位： | 东北农业大学植物病理系，东北农业大学植物病理系，东北农业大学植物病理系，东北农业大学植物病理系 哈尔滨 150030，哈尔滨 150030，哈尔滨 150030，哈尔滨 150030 |
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| 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
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| 关 键 词： | 小麦 丛矮病 灰飞虱 介体带毒率 |
STUDIES ON THE EPIDEMIC OF WHEAT ROSETTE STUNT IN SPRING WHEAT IN NORTHEAST CHINA |
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| Lu Jun,Liu Xuemin,Zhang Chunquan and Zhang Minghou.STUDIES ON THE EPIDEMIC OF WHEAT ROSETTE STUNT IN SPRING WHEAT IN NORTHEAST CHINA[J].Acta Phytophylacica Sinica,1999,26(1):44-49. |
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| Authors: | Lu Jun Liu Xuemin Zhang Chunquan and Zhang Minghou |
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| Institution: | Department of Plant Pathology. Northeast Agricultural University, Harbin 150030,Department of Plant Pathology. Northeast Agricultural University, Harbin 150030,Department of Plant Pathology. Northeast Agricultural University, Harbin 150030 and Department of Plant Pathology. Northeast Agricultural University, Harbin 150030 |
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| 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 Prefecture within a year. The most important primary infection source was virulif-erous nymphs overwintered in underground wheat stub, roots of weed and crack of soil. It showed linear relationship between the amount and the viruliferous rate of the vector and the incidence of wheat rosette stunt. The equation was established by stepwise regression analysis : Y = 0. 1823Xi -5. 7418X2-0. 03099X3-r-l. 1404X4, where X, is the number of overwintering adult vector per 0. 66m2; X2 is viruliferous rate of adult vector; X3 is Xi X2 and X4 is Xf. The disease incidence and the growth stage of wheat during infection were closely related. The most damaging inoculating period was before three-leaf stage. Disease index may reach 20%-30%. |
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| Keywords: | wheat rosette stunt Laodelphax striatellus viruliferous rate of vector |
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