不同降水状况下旱地玉米生长与产量对施氮量的响应
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宁芳,张元红,温鹏飞,王瑞,王倩,董朝阳,贾广灿,李军
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Responses of maize growth and yield to nitrogen application in dryland under different precipitation conditions
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Fang NING,Yuan-Hong ZHANG,Peng-Fei WEN,Rui WANG,Qian WANG,Zhao-Yang DONG,Guang-Can JIA,Jun LI
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表4 不同处理春玉米的产量、耗水量及水分利用效率
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Table 4 Yield, water use efficiency, and evapotranspiration of maize under different treatments
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品种
Cultivar | 施氮量
N application rate | 播种期蓄水量
Soil water storage before sowing (mm) | 收获期蓄水量
Soil water storage in harvesting (mm) | 降水量
Rainfall
(mm) | 耗水量
ET
(mm) | 籽粒产量
Grain yield
(kg hm-2) | 水分利用效率WUE
(kg hm-2 mm-1) | | 2016 | | | | | | | | 郑单958
Zhengdan 958 | N0 | 440.00 | 324.51 | 357.5 | 472.99 a | 9975 d | 21.14 b | | N75 | 440.00 | 348.09 | 357.5 | 449.41 a | 10893 c | 24.29 ab | | N150 | 440.00 | 350.18 | 357.5 | 447.32 a | 11864 b | 26.58 a | | N270 | 440.00 | 348.07 | 357.5 | 449.43 a | 12221 a | 27.25 a | | N360 | 440.00 | 348.00 | 357.5 | 449.50 a | 11886 b | 26.50 a | 陕单8806
Shaandan 8806 | N0 | 440.00 | 367.40 | 357.5 | 430.10 b | 9771 d | 22.78 a | | N75 | 440.00 | 303.87 | 357.5 | 493.63 a | 10141 c | 20.59 a | | N150 | 440.00 | 321.72 | 357.5 | 475.78 a | 10678 b | 22.50 a | | N270 | 440.00 | 334.37 | 357.5 | 463.13 ab | 10970 a | 23.74 a | | N360 | 440.00 | 330.05 | 357.5 | 467.45 ab | 10998 a | 23.58 a | | 2017 | | | | | | | | 郑单958
Zhengdan 958 | N0 | 423.62 | 405.54 | 362.6 | 380.68 a | 2215 e | 5.83 c | | N75 | 410.34 | 391.09 | 362.6 | 381.85 a | 2779 d | 7.29 c | | N150 | 419.71 | 391.76 | 362.6 | 390.56 a | 4474 a | 11.48 a | | N270 | 420.35 | 400.57 | 362.6 | 382.38 a | 4115 b | 10.78 ab | | N360 | 421.82 | 425.56 | 362.6 | 358.86 a | 3427 c | 9.57 b | 陕单8806
Shaandan 8806 | N0 | 418.00 | 423.05 | 362.6 | 357.55 b | 2305 e | 6.46 c | | N75 | 390.57 | 372.08 | 362.6 | 381.09 ab | 3022 d | 7.95 b | | N150 | 398.73 | 349.95 | 362.6 | 411.38 a | 4170 b | 10.16 a | | N270 | 412.64 | 380.34 | 362.6 | 394.89 a | 4285 a | 10.87 a | | N360 | 395.96 | 400.60 | 362.6 | 357.96 b | 3802 c | 10.64 a | | 2018 | | | | | | | | 郑单958
Zhengdan 958 | N0 | 451.88 | 376.05 | 225.0 | 300.83 d | 6718 b | 22.33 c | | N90 | 443.38 | 351.20 | 225.0 | 317.18 b | 9675 a | 30.50 a | | N180 | 452.88 | 365.40 | 225.0 | 312.49 c | 9821 a | 31.43 a | | N270 | 455.23 | 359.73 | 225.0 | 320.50 b | 10102 a | 31.52 a | | N360 | 452.25 | 341.28 | 225.0 | 335.97 a | 9411 a | 28.01 b | 陕单8806
Shaandan 8806 | N0 | 456.45 | 375.36 | 225.0 | 306.09 d | 4670 c | 15.26 d | | N90 | 439.14 | 333.00 | 225.0 | 331.14 b | 7172 b | 21.66 c | | N180 | 454.16 | 353.96 | 225.0 | 325.20 c | 9752 a | 29.99 ab | | N270 | 456.36 | 354.43 | 225.0 | 326.93 bc | 10259 a | 31.38 a | | N360 | 465.66 | 344.64 | 225.0 | 346.01 a | 9827 a | 28.40 b | | 变异来源 Source of variation | | | | | | | | 年份Year (Y) | — | — | — | ** | ** | ** | | 施氮量N application rate (N) | — | — | — | NS | ** | * | | 品种Cultivar (C) | — | — | — | NS | NS | NS | | 年份×施氮量 Y×N | — | — | — | NS | NS | NS | | 年份×品种 Y×C | — | — | — | NS | NS | NS | | 施氮量×品种 N×C | — | — | — | NS | NS | NS | | 年份×施氮量×品种 Y×N×C | — | — | — | NS | ** | ** |
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