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2 不同氮肥和密度处理下不同类型水稻的产量及其构成因素
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Table 2 Yield and its components under different N level and planting density treatments
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品种 Variety | 氮处理 Nitrogen | 密度处理 Density | 产量 Yield (t/hm2) | 有效穗数 Effective panicle | 每穗粒数 Spikelets per panicle | 总颖花 Spikelets (×103) | 结实率 Seed-setting rate (%) | 千粒重 1000-grain weight (g) | 甬优4949 Yongyou 4949 | 减氮 | 正常密度 | 7.75c | 165.4b | 270.9ab | 44.5b | 81.1a | 21.2a | | 增密 | 9.13b | 185.2ab | 254.7b | 46.9b | 82.7a | 21.3a | | 正常氮 | 正常密度 | 8.83b | 173.4b | 288.0a | 49.8ab | 81.5a | 21.2a | | | 增密 | 9.76a | 213.0a | 251.6b | 53.3a | 81.2a | 21.1a | 扬两优6号 Yangliangyou 6 | 减氮 | 正常密度 | 7.39d | 174.1b | 192.4a | 33.4c | 82.8a | 26.5a | | 增密 | 9.03b | 238.9a | 164.4b | 39.2ab | 83.8a | 26.6a | | 正常氮 | 正常密度 | 8.33c | 184.5ab | 209.7a | 37.7b | 79.0a | 25.9b | | | 增密 | 9.71a | 224.0ab | 196.0a | 43.3a | 80.1a | 26.0b | 黄华占Huanghuazhan | 减氮 | 正常密度 | 6.68b | 195.1b | 203.7ab | 39.4b | 76.2a | 19.5c | | | 增密 | 7.36a | 244.4ab | 194.2b | 47.0a | 67.8b | 20.1b | | 正常氮 | 正常密度 | 7.45a | 212.3b | 234.6a | 49.9a | 72.5ab | 19.4c | | | 增密 | 7.76a | 268.5a | 167.1b | 44.8ab | 69.2b | 20.7a | 氮肥处理Nitrogen treatment | | | | | | | 减氮Reduced N rate | 7.89B | 200.5A | 213.4A | 41.7B | 79.1A | 22.6A | 正常氮Normal N rate | 8.64A | 212.6A | 224.5A | 46.4A | 77.3A | 22.4B | 密度处理Density treatment | | | | | | | 正常密度Normal density | 7.74B | 184.1B | 233.2A | 42.3B | 78.9A | 22.3B | 增密Increase density | 8.79A | 229.0A | 204.7A | 45.7A | 77.5A | 22.7A | 品种Variety | | | | | | | 甬优4949 Yongyou 4949 | 8.87A | 184.2B | 266.3A | 48.6A | 81.7A | 21.2B | 扬两优6号Yangliangyou 6 | 8.62A | 205.4AB | 190.6B | 38.4B | 81.4A | 26.3A | 黄华占Huanghuazhan | 7.31B | 230.1A | 199.9B | 45.3A | 71.4B | 19.9C | 差异分析Analysis of variance | | | | | | | 氮肥Nitrogen(N) | ** | ns | ns | ** | ns | * | 密度Density(D) | ** | ** | ns | * | ns | ** | 品种Variety(V) | ** | ** | ** | ** | ** | ** | 氮肥×密度N×D | ns | ns | ns | ns | ns | ns | 氮肥×品种N×V | ns | ns | ns | ns | ns | ** | 密度×品种D×V | ** | ns | ns | ns | ns | ** | 氮肥×密度×品种N×D×V | ns | ns | ns | * | ns | ns |
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