控失尿素减施及不同配比对夏玉米产量及氮肥效率的影响
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张倩, 韩本高, 张博, 盛开, 李岚涛, 王宜伦
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Reduced application and different combined applications of loss-control urea on summer maize yield and fertilizer efficiency improvement
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ZHANG Qian, HAN Ben-Gao, ZHANG Bo, SHENG Kai, LI Lan-Tao, WANG Yi-Lun
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表5 控失尿素减施及不同配比对高产田夏玉米光合特性的影响
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Table 5 Effects of reduction and different ratios of loss-control urea and urea treatments on photosynthetic characteristics of summer maize in high-yield field
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指标 Item | 处理 Treatment | 生育时期 Growth stage | 大喇叭口期 Trumpeting stage | 吐丝期 Silking stage | 灌浆期 Filling stage | 光合速率 Photosynthetic rate (μmol m-2 s-1) | CK | 29.67±1.12 a | 25.54±0.49 a | 22.48±0.72 c | CF | 30.60±1.68 aA | 25.26±0.22 aC | 25.75±0.82 abC | CL | 29.57±1.43 aAB | 25.43±1.16 aC | 26.36±0.65 aBC | CL10 | 29.55±0.89 a | 25.77±0.40 a | 25.59±0.29 ab | CL20 | 29.42±0.40 a | 24.78±0.28 a | 23.87±0.83 bc | CL7:3 | 26.73±0.89 B | 23.36±0.38 C | 28.57±0.65 AB | CL5:5 | 30.11±0.76 A | 28.98±0.76 B | 29.61±0.87 A | CL3:7 | 30.33±1.01 A | 31.85±0.47 A | 25.24±0.96 C | 气孔导度 Stomata conductance (mmol mol-1) | CK | 0.19±0.02 b | 0.19±0.00 ab | 0.14±0.02 a | CF | 0.23±0.02 abA | 0.17±0.02 bC | 0.17±0.01 aA | CL | 0.27±0.01 a A | 0.20±0.01 abC | 0.17±0.00 aA | CL10 | 0.20±0.02 b | 0.20±0.01 ab | 0.19±0.01 a | CL20 | 0.19±0.01 b | 0.21±0.00 a | 0.17±0.03 a | CL7:3 | 0.27±0.01 A | 0.16±0.02 C | 0.17±0.04 A | CL5:5 | 0.24±0.02 A | 0.27±0.02 B | 0.18±0.04 A | CL3:7 | 0.25±0.02 A | 0.32±0.01 A | 0.18±0.01 A | 胞间CO2浓度 Intercellular CO2 concentration (μmol mol-1) | CK | 123.66±9.59 a | 94.01±2.39 b | 54.59±1.67 d | CF | 138.05±7.65 aA | 104.26±6.87 bC | 69.87±3.86 cD | CL | 131.89±5.30 aAB | 132.03±7.34 bAB | 100.56±3.49 aBC | CL10 | 124.31±4.66 a | 137.82±4.72 a | 85.22±1.45 b | CL20 | 96.69±5.21 b | 95.82±5.50 a | 62.51±2.23 cd | CL7:3 | 115.77±5.90 B | 144.33±3.18 A | 118.72±2.57 A | CL5:5 | 130.19±4.92 AB | 136.17±3.94 AB | 110.45±4.77 AB | CL3:7 | 128.37±2.81 AB | 121.24±0.34 BC | 95.21±6.62 C | 蒸腾速率 Transpiration rate (mmol m-2 s-1) | CK | 3.97±0.26 a | 3.27±0.11 b | 4.79±0.23 b | CF | 4.25±0.18 aA | 3.50±0.27 abC | 5.92±0.18 abBC | CL | 3.69±0.29 aA | 3.76±0.18 abBC | 6.28±0.12 aB | CL10 | 4.10±0.41 a | 4.02±0.22 a | 5.50±0.80 ab | CL20 | 3.81±0.13 a | 3.65±0.10 ab | 4.76±0.07 b | CL7:3 | 3.74±0.48 A | 3.08±0.27 C | 6.72±0.11 A | CL5:5 | 4.28±0.23 A | 4.42±0.08 AB | 5.41±0.09 D | CL3:7 | 4.35±0.22 A | 4.89±0.39 A | 5.70±0.14 CD |
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