灌浆结实期半深水灌溉对水稻产量、干物质转运及籽粒灌浆的影响

郭威, 孙冬, 闫治霖, 丁蓓, 杜跃辰, 吴慧扬, 徐强, 窦志, 高辉

Influence of Semi-Deep Water Irrigation during Grain-Filling Period on Rice Yield, Dry Matter Transportation and Grain-Filling

Guo Wei, Sun Dong, Yan Zhilin, Ding Bei, Du Yuechen, Wu Huiyang, Xu Qiang, Dou Zhi, Gao Hui

表6 结实期不同灌溉深度对水稻抽穗后15和35 d剑叶光合参数和SPAD值的影响

Table 6 Effects of different irrigation depths during the grain filling stage on photosynthetic parameters and SPAD values of flag leaves at 15 and 35 days after heading

品种 Variety 处理 Treatment Pn [μmol/(m2·s)] Gs [mmol/(m2·s)] Ci (μmol/mol) Tr [mmol/(m2·s)] SPAD值SPAD value D15 D35 D15 D35 D15 D35 D15 D35 D15 D35 南粳5718 NG5718 CK 27.76a 14.90a 0.44a 0.29a 373.00a 294.67a 8.57a 3.27b 44.77a 36.50a WD20 24.60ab 13.10a 0.39ab 0.31a 359.00b 298.00b 8.39ab 3.95a 49.50a 38.67a WD40 22.59b 19.73b 0.33b 0.35a 351.33b 324.67b 7.53b 4.43a 47.17a 43.83b 徽两优898 HLY898 CK 25.60a 11.14a 0.38a 0.32a 379.00a 342.00a 9.47a 3.63a 43.03a 26.20a WD20 25.53a 10.60a 0.36a 0.29a 374.67a 330.33a 9.19ab 3.84a 41.70a 31.77ab WD40 23.47b 13.76b 0.32b 0.36a 371.00a 338.33a 8.21b 3.27b 41.80a 35.07b 方差分析 Analysis of variance V 0.52 6.95* 2.89 0.06 0.55 8.55* 6.80* 1.12 37.34** 99.70** ID 8.44* 5.51* 8.70* 0.09 0.57 0.42 4.82* 5.90* 12.22** 11.92** V×ID 3.17 1.78 1.71 0.22 0.13 0.40 0.07 3.51 7.28* 0.64