水氮耦合及种植密度对绿洲灌区玉米光合作用和 干物质积累特征的调控效应

魏廷邦,柴强,王伟民,王军强

Effects of Coupling of Irrigation and Nitrogen Application as well as Planting Density on Photosynthesis and Dry Matter Accumulation Characteristics of Maize in Oasis Irrigated Areas

WEI TingBang,CHAI Qiang,WANG WeiMin,WANG JunQiang

表3 不同处理玉米的产量、水分利用效率及氮肥利用率

Table 3 The grain yield and WUE and nitrogen utilization efficiency of maize under different treatments

年份 Year 处理 Treatment 产量 Grain yield 水分利用效率 WUE 氮肥利用率 Nitrogen utilization efficiency 2016 W1N0D1 8015.63c 12.18d — W1N0D2 8599.57c 12.70d — W1N0D3 8406.93c 12.38d — W1N1D1 12211.91b 17.83b 13.10d W1N1D2 10725.40b 19.81a 15.33c W1N1D3 11008.27b 15.81bc 19.30a W1N2D1 12037.13b 17.19bc 17.52f W1N2D2 11273.53b 18.68ab 20.64e W1N2D3 11403.40c 16.99bc 24.36bc W2N0D1 8093.53c 12.66d — W2N0D2 8247.37c 12.69d — W2N0D3 7948.39b 12.19d — W2N1D1 10471.90b 15.55c 12.62c W2N1D2 12170.47b 17.80b 13.92bc W2N1D3 11161.16b 16.10bc 17.84b W2N2D1 11238.43b 16.40bc 20.85f W2N2D2 13871.22a 18.99ab 22.28ef W2N2D3 11078.11b 15.69c 23.18d 2017 W1N0D1 7159.1c 11.42ef — W1N0D2 7605.8c 10.74f — W1N0D3 7674.9c 12.46ef — W1N1D1 9971.6cb 20.40b 19.29c W1N1D2 11329.5ab 20.65a 27.55a W1N1D3 11792.6ab 16.02d 23.47b W1N2D1 10514.2b 17.26d 18.86c W1N2D2 12297.8ab 19.63c 24.18a W1N2D3 11930.0ab 16.10d 21.59bc W2N0D1 7729.6c 12.14ef — W2N0D2 8063.5c 13.21e — W2N0D3 7708.6c 12.07ef — W2N1D1 9633.7cb 15.31d 16.62c W2N1D2 11880.5ab 17.95cd 27.33a W2N1D3 12154.3ab 16.09d 20.83bc W2N2D1 10956.1b 17.08d 17.42c W2N2D2 13699.3a 18.29cd 27.42a W2N2D3 10271.2cb 15.80d 20.48bc 显著性（P值）Significance (P value) 灌水水平W NS * * 施氮水平N * * * 种植密度D * * * 灌水水平×施氮水平W×N * * * 灌水水平×种植密度W×D * NS * 施氮水平×种植密度N×D * * * 灌水水平×施氮水平×种植密度W×N×D * * *