增密减氮对不同类型水稻品种颖花形成的影响
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种浩天, 尚程, 张运波, 黄礼英
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Effects of Dense Planting with Reduced Nitrogen Application on Spikelet Formation of Different Types of Rice Varieties
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Chong Haotian, Shang Cheng, Zhang Yunbo, Huang Liying
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表3 不同氮肥和密度处理下不同品种水稻的颖花分化和退化数
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Table 3 Spikelet differentiation and degeneration under different N levels and planting density treatments in different rice varieties
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品种 Variety | 氮处理 Nitrogen treatment | 密度处理 Density treatment | 一次枝梗数 Primary branch number | 二次枝梗数 Secondary branch number | 颖花现存数 Number of surviving spikelets | 颖花退化数 Number of degenerated spikelets | 颖花分化数 Number of differentiated spikelets | 甬优4949 Yongyou 4949 | 减氮 | 正常密度 | 17.8a | 55.9a | 353.9a | 19.1a | 373.0a | | 增密 | 18.2a | 50.9a | 270.6c | 25.9a | 296.5b | | 正常氮 | 正常密度 | 18.7a | 58.8a | 334.6b | 24.6a | 359.2a | | | 增密 | 16.7a | 46.6a | 274.2c | 22.6a | 296.8b | 扬两优6号 Yangliangyou 6 | 减氮 | 正常密度 | 13.2a | 44.7a | 246.7a | 10.2a | 249.7a | | 增密 | 13.9a | 45.3a | 247.9a | 9.8a | 249.6a | | 正常氮 | 正常密度 | 14.0a | 47.8a | 257.3a | 12.8a | 264.6a | | | 增密 | 13.2a | 48.4a | 247.2a | 8.1a | 249.5a | 黄华占 Huanghuazhan | 减氮 | 正常密度 | 13.4a | 39.0a | 217.6ab | 13.8a | 231.3ab | | 增密 | 12.8a | 42.6a | 201.0b | 12.0a | 213.0b | | 正常氮 | 正常密度 | 12.1a | 45.7a | 241.5a | 8.3a | 249.8a | | | 增密 | 12.7a | 42.8a | 218.3ab | 10.4a | 228.8ab | 氮肥处理Nitrogen treatment | | | | | | 减氮Reduced N rate | 14.9A | 46.4A | 256.3A | 15.1A | 271.4A | 正常氮Normal N rate | 14.6A | 48.3A | 262.2A | 14.5A | 276.7A | 密度处理Density treatment | | | | | | 正常密度Normal density | 14.9A | 48.6A | 275.2A | 14.8A | 290.1A | 增密Increase density | 14.6A | 46.1A | 243.2B | 14.8A | 258.0B | 品种Variety | | | | | | 甬优4949 Yongyou 4949 | 17.8A | 53.0A | 308.3A | 23.0A | 331.4A | 扬两优6号Yangliangyou 6 | | 46.6B | 249.8B | 10.2B | 260.0B | 黄华占Huanghuazhan | 12.8B | 42.5B | 219.6C | 11.1B | 230.7C | 差异分析Analysis of variance | | | | | | 氮肥Nitrogen(N) | ns | ns | ns | ns | ns | 密度Density(D) | ns | ns | ** | ns | ** | 品种Varieties(V) | ** | ** | ** | ** | ** | 氮肥×密度N×D | | ns | ns | ns | ns | 氮肥×品种N×V | | ns | ns | ns | ns | 密度×品种D×V | | ns | ** | ns | ** | 氮肥×密度×品种N×D×V | | | ns | ns | ns |
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