控水增密模式对杂交籼稻减氮后产量形成的调控效应

李敏, 罗德强, 江学海, 蒋明金, 姬广梅, 李立江, 周维佳

Regulations of controlled irrigations and increased densities on yield formation of hybrid indica rice under nitrogen-reduction conditions

Min LI, De-Qiang LUO, Xue-Hai JIANG, Ming-Jin JIANG, Guang-Mei JI, Li-Jiang LI, Wei-Jia ZHOU

表4 控水增密对水稻减氮后产量及其构成的影响(2018)

Table 4 The effects of controlled water management and increased density on yield and yield components under nitrogen reductions of rice in 2018

栽培模式Cultivation model 有效穗数 Effective panicle number (×104 hm-2) 穗粒数 Spikelets per panicle 颖花量 Total spikelets (×104 hm-2) 结实率 Seed-setting rate (%) 千粒重 1000-grain weight (g) 产量 Grain yield (t hm-2) 减氮 Nitrogen reduction 控水增密 Water-density treatment N0 W0D0(CK) 264.1±4.7 198.4±3.4 52,388±351 82.1±1.8 28.2±0.2 11.43±0.23 N-10% W0D0 255.0±5.7 193.2±5.1 49,250±734 82.8±1.2 28.3±0.1 10.51±0.18 N-10% W0D1 263.8±9.2 192.6±3.1 50,795±1352 82.3±0.7 28.2±0.0 11.32±0.26 N-10% W0D2 279.4±6.9 187.7±1.8 52,436±911 78.6±1.3 27.8±0.1 10.71±0.34 N-10% W0D3 303.5±16.3 173.9±2.0 52,779±2937 68.9±1.7 27.0±0.4 9.09±0.17 N-10% W1D1 258.9±8.3 195.2±1.9 50,528±1196 84.6±1.0 28.4±0.2 11.63±0.24 N-10% W1D2 275.3±11.8 190.6±4.4 52,494±3145 79.3±1.7 28.0±0.3 10.98±0.48 N-10% W1D3 298.2±9.4 175.2±2.1 52,232±1075 70.1±3.0 27.1±0.1 9.17±0.15 N-10% W2D1 256.2±9.1 191.2±2.4 48,974±1313 84.1±1.5 28.3±0.2 11.48±0.07 N-10% W2D2 269.1±10.7 186.8±3.8 50,253±1698 80.1±1.5 28.0±0.3 11.05±0.39 N-10% W2D3 282.6±5.1 175.1±3.1 49,479±912 73.8±1.6 27.6±0.3 9.47±0.31 N-10% W3D1 232.8±6.2 190.7±3.5 44,385±886 82.2±1.4 28.0±0.3 9.78±0.10 N-10% W3D2 245.9±9.4 187.4±4.3 46,099±2598 80.2±1.6 27.6±0.3 9.66±0.42 N-10% W3D3 255.8±12.9 181.2±2.4 46,346±2299 75.9±1.3 27.3±0.2 9.03±0.22 N-30% W0D0 228.2±8.4 185.6±1.0 42,349±1378 83.6±0.6 28.6±0.0 9.29±0.12 N-30% W0D1 222.7±8.9 182.6±1.8 40,661±1544 82.9±2.0 28.1±0.1 9.11±0.29 N-30% W0D2 239.5±10.9 180.1±1.9 43,142±2263 80.5±0.4 28.0±0.2 9.40±0.26 栽培模式Cultivation model 有效穗数 Effective panicle number (×104 hm-2) 穗粒数 Spikelets per panicle 颖花量 Total spikelets (×104 hm-2) 结实率 Seed-setting rate (%) 千粒重 1000-grain weight (g) 产量 Grain yield (t hm-2) 减氮 Nitrogen reduction 控水增密 Water-density treatment N-30% W0D3 247.9±10.4 175.3±16.9 43,552±5699 78.4±0.8 27.5±0.1 8.61±1.28 N-30% W1D1 219.8±8.2 185.7±3.6 40,816±1692 84.6±2.5 28.5±0.1 9.32±0.20 N-30% W1D2 236.4±7.3 182.4±2.0 43,118±1326 83.1±0.4 28.2±0.2 9.58±0.20 N-30% W1D3 245.6±13.1 172.1±6.9 42,299±3394 80.6±1.6 27.7±0.2 8.73±0.50 N-30% W2D1 216.8±10.8 182.6±11.2 39,526±1644 83.5±3.2 28.3±0.2 8.84±0.58 N-30% W2D2 236.0±15.1 183.2±6.8 43,292±4217 83.9±2.1 28.2±0.3 9.76±0.75 N-30% W2D3 242.7±5.2 172.2±4.0 41,795±1435 80.4±1.1 27.7±0.2 8.85±0.74 N-30% W3D1 210.3±16.6 179.2±0.9 37,676±2769 82.1±1.2 28.0±0.2 7.99±0.57 N-30% W3D2 222.9±3.4 176.9±8.1 39,423±1616 81.3±1.1 27.7±0.0 8.42±0.42 N-30% W3D3 234.9±8.7 174.2±3.5 40,939±2319 75.6±1.9 27.4±0.3 8.02±0.41 LSD0.05 16.28 8.77 3712.90 2.66 0.32 0.73