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12 控水增密对水稻减氮后干物质阶段积累量及比例的影响

Table 12 The effects of controlled water management and increased density on dry matter accumulation during different growth periods under nitrogen reductions in rice

栽培模式Cultivation model 阶段积累量Dry matter accumulation (t hm-2) 干物质积累比例Dry matter accumulation rate (%) 减氮 Nitrogen reduction 控水增密 Water-density treatment 拔节前 Sowing to elongation stage 拔节-抽穗 Elongation stage to heading stage 抽穗-成熟 Heading stage to maturity stage 拔节前 Sowing to elongation stage 拔节-抽穗 Elongation stage to heading stage 抽穗-成熟 Heading stage to maturity stage N0 W0D0 (CK) 4.8±0.2 7.8±0.3 10.0±0.5 21.2±0.5 34.5±0.5 44.2±1.0 N-10% W0D0 4.2±0.2 7.4±0.3 9.4±0.9 20.0±0.4 35.3±1.8 44.7±2.0 N-10% W0D1 4.7±0.2 8.4±0.4 9.6±0.8 20.7±0.5 37.0±0.8 42.3±1.3 N-10% W0D2 5.0±0.2 8.4±0.2 9.7±0.6 21.7±0.2 36.4±1.0 42.0±1.2 N-10% W0D3 5.2±0.1 8.7±0.1 9.9±0.8 21.9±0.7 36.6±1.2 41.6±1.8 N-10% W1D1 4.3±0.1 8.0±0.1 9.9±0.9 19.4±0.5 36.1±1.6 44.5±2.1 N-10% W1D2 4.6±0.2 8.1±0.1 9.7±1.0 20.6±0.4 36.2±1.9 43.2±2.2 N-10% W1D3 4.9±0.2 8.1±0.4 10.3±0.6 21.0±0.8 34.8±1.8 44.2±1.7 N-10% W2D1 4.2±0.1 7.9±0.3 9.5±0.5 19.5±0.8 36.6±0.8 44.0±0.9 N-10% W2D2 4.4±0.1 7.9±0.1 10.0±0.8 19.7±0.5 35.5±1.1 44.8±1.6 N-10% W2D3 4.7±0.1 8.0±0.1 10.2±0.5 20.5±0.3 35.0±0.7 44.5±1.0 N-10% W3D1 3.8±0.1 8.0±0.2 7.0±0.9 20.2±0.6 42.6±2.3 37.2±2.9 N-10% W3D2 4.2±0.2 8.0±0.0 8.6±1.1 20.2±1.1 38.5±2.1 41.2±2.9 N-10% W3D3 4.4±0.1 8.2±0.2 8.5±0.5 20.9±0.4 38.9±1.5 40.3±1.8 N-30% W0D0 3.6±0.1 5.5±0.4 7.5±1.0 21.8±1.8 33.2±2.3 45.1±3.4 N-30% W0D1 3.8±0.1 6.1±0.2 6.9±0.3 22.6±0.7 36.3±0.5 41.1±0.6 N-30% W0D2 4.0±0.2 6.7±0.4 8.2±0.4 21.2±1.0 35.5±2.3 43.4±1.6 N-30% W0D3 4.5±0.2 7.0±0.2 8.2±0.3 22.8±0.8 35.5±0.8 41.6±1.5 N-30% W1D1 3.4±0.0 6.0±0.4 7.3±0.8 20.4±0.8 36.0±3.0 43.7±3.4 N-30% W1D2 3.7±0.2 6.5±0.4 8.6±0.5 19.7±0.7 34.6±2.3 45.7±1.6 N-30% W1D3 4.3±0.1 6.7±0.5 8.5±0.5 22.1±0.2 34.4±2.7 43.6±2.7 N-30% W2D1 3.2±0.1 6.3±0.2 7.0±0.1 19.4±0.4 38.2±0.5 42.4±0.8 N-30% W2D2 3.6±0.1 6.4±0.2 9.0±0.3 19.0±0.5 33.7±1.0 47.4±1.4 N-30% W2D3 3.9±0.2 6.4±0.6 9.1±0.2 20.1±1.0 33.0±2.5 46.9±1.6 N-30% W3D1 3.0±0.1 6.1±0.4 6.5±0.4 19.2±0.9 39.1±2.7 41.7±2.4 N-30% W3D2 3.3±0.3 6.1±0.0 9.1±0.3 17.8±1.5 33.0±0.2 49.2±1.5 N-30% W3D3 3.6±0.1 6.3±0.4 9.2±0.2 18.9±0.4 33.0±1.5 48.2±1.4 LSD0.05 0.23 0.48 1.06 1.27 2.82 3.17