控水增密模式对杂交籼稻减氮后产量形成的调控效应
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李敏, 罗德强, 江学海, 蒋明金, 姬广梅, 李立江, 周维佳
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Regulations of controlled irrigations and increased densities on yield formation of hybrid indica rice under nitrogen-reduction conditions
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Min LI, De-Qiang LUO, Xue-Hai JIANG, Ming-Jin JIANG, Guang-Mei JI, Li-Jiang LI, Wei-Jia ZHOU
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表6 控水增密对水稻减氮后分蘖性状的影响
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Table 6 Effects of controlled water management and increased density on tillering characteristics under nitrogen reductions in rice
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| 栽培模式Cultivation model | 群体茎蘖数Tillers per unit area (×104 hm-2) | 分蘖成穗率
Percentage of
productive tillers (%) | 减氮
Nitrogen reduction | 控水增密
Water-density
treatment | 拔节期
Elongation stage | 抽穗期
Heading stage | 成熟期
Maturity stage | | N0 | W0D0 (CK) | 373.5±10.5 | 294.1±5.8 | 276.2±10.6 | 73.9±1.4 | | N-10% | W0D0 | 348.1±9.8 | 278.0±6.1 | 255.1±6.7 | 73.3±0.5 | | N-10% | W0D1 | 387.2±13.8 | 298.2±19.5 | 288.4±17.2 | 74.5±2.7 | | N-10% | W0D2 | 416.8±13.5 | 327.5±8.4 | 307.3±7.1 | 73.8±1.6 | | N-10% | W0D3 | 459.9±20.0 | 359.6±8.8 | 327.7±16.1 | 71.3±3.5 | | N-10% | W1D1 | 361.6±8.2 | 292.5±6.3 | 279.3±7.2 | 77.2±0.7 | | N-10% | W1D2 | 394.5±14.1 | 312.2±13.7 | 295.7±14.9 | 74.9±1.2 | | N-10% | W1D3 | 448.4±16.9 | 352.6±11.5 | 322.8±13.8 | 72.0±1.4 | | N-10% | W2D1 | 340.5±12.7 | 283.5±11.2 | 267.2±12.3 | 78.5±1.5 | | N-10% | W2D2 | 370.5±12.7 | 316.7±17.8 | 279.3±9.6 | 75.4±3.2 | | N-10% | W2D3 | 408.2±8.9 | 334.5±13.8 | 298.8±20.4 | 73.2±5.0 | | N-10% | W3D1 | 321.3±14.7 | 270.2±8.9 | 256.9±4.9 | 80.1±3.4 | | N-10% | W3D2 | 350.9±15.1 | 292.5±6.3 | 268.8±6.9 | 76.6±1.3 | | N-10% | W3D3 | 389.8±9.5 | 310.6±12.1 | 288.4±9.6 | 74.0±1.9 | | N-30% | W0D0 | 307.5±26.9 | 267.1±7.7 | 231.2±4.9 | 75.7±7.9 | | N-30% | W0D1 | 315.9±14.9 | 265.7±10.6 | 237.5±19.3 | 75.1±3.6 | | N-30% | W0D2 | 357.4±18.3 | 287.3±6.9 | 263.3±11.4 | 73.8±3.6 | | N-30% | W0D3 | 389.2±24.4 | 311.6±10.3 | 283.6±12.2 | 73.2±7.4 | | N-30% | W1D1 | 297.0±6.7 | 249.2±11.4 | 229.7±18.7 | 77.3±5.0 | | N-30% | W1D2 | 336.2±7.4 | 272.9±17.3 | 253.9±22.8 | 75.5±6.8 | | N-30% | W1D3 | 373.5±5.7 | 298.5±6.5 | 274.8±20.4 | 73.5±4.4 | | N-30% | W2D1 | 286.4±6.2 | 241.6±13.7 | 222.2±11.7 | 77.6±3.7 | | N-30% | W2D2 | 327.0±5.8 | 268.5±10.2 | 249.2±3.3 | 76.2±1.0 | | N-30% | W2D3 | 358.5±11.1 | 294.2±22.7 | 267.3±19.1 | 74.6±6.2 | | N-30% | W3D1 | 268.7±9.2 | 234.0±10.2 | 214.7±12.1 | 79.9±3.1 | | N-30% | W3D2 | 316.4±12.6 | 267.1±12.5 | 241.6±15.5 | 76.3±2.4 | | N-30% | W3D3 | 345.5±10.1 | 285.4±5.6 | 258.3±6.1 | 74.8±1.2 | | LSD0.05 | 22.30 | 19.29 | 22.16 | 6.19 |
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