| 稻穗颈瘟流行的通径分析及预测模型 |
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| 引用本文： | 彭洪江,王旭祎,孙晓红.稻穗颈瘟流行的通径分析及预测模型[J].植物保护学报,1995,22(2):107-111. |
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| 作者姓名： | 彭洪江 王旭祎 孙晓红 |
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| 作者单位： | 四川省涪陵地区农业科学研究所，四川省涪陵地区农业科学研究所，四川省涪陵地区农业科学研究所 涪陵 648000，涪陵 648000，涪陵 648000 |
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| 摘 要： | 试验资料分析结果表明，水稻孕穗末期至成熟期的雨湿日数、日平均气温是感病品种穗颈温流行的主导因素，分蘖末期叶瘟对穗颈温流行的直接作用不大，但通过雨湿日数将产生较大作用，由此建立了穗颈温流行趋势的预测模型。
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| 关 键 词： | 水稻 穗颈瘟 雨湿日数 通径分析 预测模型 |
A PATH ANALYSIS OF THE EPIDEMIC OF RICE NECK BLAST AND THE FORECAST MODEL |
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| Peng Hongjiang,Wang Xuyi and Sun Xiaohong.A PATH ANALYSIS OF THE EPIDEMIC OF RICE NECK BLAST AND THE FORECAST MODEL[J].Acta Phytophylacica Sinica,1995,22(2):107-111. |
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| Authors: | Peng Hongjiang Wang Xuyi and Sun Xiaohong |
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| Institution: | Puling Prefectural Institute of Agricultural Sciences, Sichuan Province, Fuling,Puling Prefectural Institute of Agricultural Sciences, Sichuan Province, Fuling and Puling Prefectural Institute of Agricultural Sciences, Sichuan Province, Fuling |
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| Abstract: | In 1991 - 1993, the path correlation between disease index of rice neck blast and percentage of infected leaf blast at booting last stage and 5 main meteorological factors at booting last stage to full riping stage were analysed, based on mutiopint observation in different ecological zones. The results showed that the raing and humid days (total of raing days and fog days and dew days) and the daily mean temperature were the main factors causing epidemic of rice neck blast. The influence of leaf blast upon neck blast depented on raing and humid days. The regression equations of the disease index of neck blast at full riping stage (Y) were dependent on the raing and humid days (X4) and the daily mean temperature (X2) or the percentage of infected leaf blast at booting last stage (X1) were derived. |
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| Keywords: | paddy rice neck blast raing and humid days (total of raing days and fog days and dew days) path analysis |
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