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11 水稻产量性状的方差分析

Table 11 Analysis of variance for period dry matter accumulation in rice

性状 Trait 变异来源 自由度 df 平方和 Sum of square 均方 Mean squares F值 F-value 显著性 Significance Source of variation 拔节前干物质量 栽培模式CM 26 26.54 1.02 66.23 < 0.01 Dry matter before elongation stage 误差Residual 52 0.80 0.02 总变异Total 80 27.64 拔节抽穗期干物质量 Dry matter from elongation stage to heading stage 栽培模式CM 26 70.70 2.72 38.73 < 0.01 误差Residual 52 3.65 0.07 总变异Total 80 75.30 抽穗成熟期干物质量 Dry matter from heading stage to maturity stage 栽培模式CM 26 99.90 3.84 12.47 < 0.01 误差Residual 52 16.02 0.31 总变异Total 80 122.46 性状 Trait 变异来源 自由度 df 平方和 Sum of square 均方 Mean squares F值 F-value 显著性 Significance Source of variation 拔节前干物质比例 Rate of dry matter before elongation stage 栽培模式CM 26 113.02 4.35 8.1 < 0.01 误差Residual 52 27.90 0.54 总变异Total 80 145.11 拔节抽穗期干物质比例 Rate of dry matter from elongation stage to heading stage 栽培模式CM 26 378.76 14.57 4.99 < 0.01 误差Residual 52 151.77 2.92 总变异Total 80 538.52 抽穗成熟期干物质比例 Rate of dry matter from heading stage to maturity stage 栽培模式CM 26 517.65 19.91 5.83 < 0.01 误差Residual 52 177.73 3.42 总变异Total 80 719.18