拔节前补灌追氮对小麦叶片干物质积累量和产量的影响

赵永满, 李瑞奇, 王红光

Effects of Supplemental Irrigation and Nitrogen Topdressing before Jointing on Leaf Dry Matter Accumulation and Yield of Wheat

Zhao Yongman, Li Ruiqi, Wang Hongguang

表3 叶面积、LAI和干物质积累量与籽粒产量及其构成因素的相关性

Table 3 Correlation between leaf area, LAI, and dry matter accumulation with grain yield and its components

处理 Treatment 穗数 Spike number 穗粒数 Grain number per spike 千粒重 1000-grain weight 籽粒产量 Grain yield 倒3叶干物质积累量Dry matter accumulation of L4 0.514** -0.030 0.497** 0.674** 倒2叶干物质积累量Dry matter accumulation of L5 0.345 -0.085 0.472** 0.495** 旗叶干物质积累量Dry matter accumulation of L6 0.117 -0.102 0.072 0.308 倒3叶叶面积Leaf area of L4 0.135 -0.009 0.274 0.230 倒2叶叶面积Leaf area of L5 0.328 -0.017 0.436* 0.442* 旗叶叶面积Leaf area of L6 0.057 -0.036 0.533** 0.113 倒3叶LAI LAI of L4 0.742** -0.058 0.445* 0.761** 倒2叶LAI LAI of L5 0.763** -0.008 0.507** 0.766** 旗叶LAI LAI of L6 0.723** -0.005 0.550** 0.687** 单茎干物质积累量Single stem dry matter accumulation -0.014 -0.061 0.382* 0.122 总干物质积累量Total dry matter accumulation 0.864** -0.160 0.446* 0.781**