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14 控水增密对水稻减氮后干物质分配的影响

Table 14 Effects of controlled water management and increased density on dry matter allocation under nitrogen reductions in rice

栽培模式Cultivation model 干物质分配量Dry matter allocation (t hm-2) 干物质分配比例Dry matter allocation rate (%) 减氮 Nitrogen reduction 控水增密 Water-density treatment 茎鞘 Stem and sheath 叶片 Leaf 穗 Panicle 茎鞘 Stem and sheath 叶片 Leaf 穗 Panicle N0 W0D0(CK) 6.8±0.2 3.5±0.1 12.3±0.6 30.1±0.7 15.5±0.2 54.4±0.8 N-10% W0D0 6.4±0.2 3.3±0.1 11.3±1.0 30.5±1.0 15.8±0.9 53.7±1.8 N-10% W0D1 7.1±0.1 3.5±0.0 12.1±1.2 31.3±1.4 15.5±0.8 53.2±2.3 N-10% W0D2 7.5±0.1 4.2±0.2 11.4±0.9 32.5±1.4 18.2±0.9 49.3±2.2 栽培模式Cultivation model 干物质分配量Dry matter allocation (t hm-2) 干物质分配比例Dry matter allocation rate (%) 减氮 Nitrogen reduction 控水增密 Water-density treatment 茎鞘 Stem and sheath 叶片 Leaf 穗 Panicle 茎鞘 Stem and sheath 叶片 Leaf 穗 Panicle N-10% W0D3 8.1±0.2 5.9±0.3 9.8±0.5 34.1±0.7 24.8±0.4 41.2±0.5 N-10% W1D1 6.4±0.4 3.1±0.1 12.7±0.6 28.8±0.6 14.0±0.7 57.2±0.3 N-10% W1D2 7.1±0.2 3.8±0.1 11.5±1.0 31.7±1.3 17.0±0.7 51.3±1.8 N-10% W1D3 7.8±0.2 5.5±0.3 10.0±0.4 33.5±0.3 23.6±1.1 42.9±1.4 N-10% W2D1 6.2±0.2 2.9±0.0 12.5±0.6 28.7±0.2 13.4±0.5 57.9±0.7 N-10% W2D2 7.1±0.2 3.5±0.2 11.7±0.9 31.9±0.6 15.7±1.3 52.4±1.8 N-10% W2D3 7.2±0.3 4.8±0.1 10.9±0.4 31.4±0.3 21.0±0.3 47.6±0.1 N-10% W3D1 5.3±0.3 2.5±0.2 11.0±0.7 28.2±1.6 13.3±0.2 58.5±1.4 N-10% W3D2 7.0±0.2 3.2±0.2 10.6±0.9 33.7±1.5 15.4±0.1 50.9±1.4 N-10% W3D3 6.9±0.1 4.0±0.2 10.2±0.4 32.7±1.1 19.0±0.6 48.3±0.8 N-30% W0D0 4.9±0.1 2.5±0.1 9.2±1.0 29.6±2.0 15.1±0.6 55.3±2.5 N-30% W0D1 5.5±0.3 2.4±0.1 8.9±0.7 32.8±2.0 14.3±0.9 52.9±2.8 N-30% W0D2 6.5±0.2 3.2±0.2 9.2±0.2 34.4±0.9 16.9±0.6 48.7±0.5 N-30% W0D3 6.8±0.2 4.1±0.2 8.8±0.1 34.5±0.8 21.0±0.8 44.5±0.1 N-30% W1D1 5.4±0.1 2.3±0.1 9.0±0.7 32.4±1.7 13.8±0.6 53.8±2.2 N-30% W1D2 6.0±0.1 2.8±0.1 10.0±0.7 32.0±1.5 14.9±0.8 53.2±2.1 N-30% W1D3 6.3±0.1 3.8±0.2 9.4±0.1 32.3±0.0 19.5±0.6 48.2±0.7 N-30% W2D1 5.4±0.1 2.2±0.1 8.9±0.1 32.7±0.4 13.3±0.4 53.9±0.4 N-30% W2D2 5.9±0.4 2.8±0.1 10.3±0.4 31.1±2.0 14.7±0.4 54.2±2.1 N-30% W2D3 6.1±0.2 3.8±0.2 9.5±0.1 31.4±0.5 19.6±0.6 49.0±1.1 N-30% W3D1 5.2±0.1 2.0±0.1 8.4±0.4 33.4±1.1 12.8±0.7 53.8±1.4 N-30% W3D2 6.3±0.1 3.1±0.2 9.1±0.3 34.1±0.7 16.8±1.0 49.2±1.4 N-30% W3D3 6.9±0.1 3.3±0.1 8.9±0.1 36.1±0.2 17.3±0.4 46.7±0.2 LSD0.05 0.31 0.24 1.04 1.86 1.13 2.47