不同降雨状况下渭北旱地春玉米临界氮稀释曲线与氮素营养诊断
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刘朋召,师祖姣,宁芳,王瑞,王小利,李军
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Critical nitrogen dilution curves and nitrogen nutrition diagnosis of spring maize under different precipitation patterns in Weibei dryland
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Peng-Zhao LIU,Zu-Jiao SHI,Fang NING,Rui WANG,Xiao-Li WANG,Jun LI
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表2 旱地玉米不同生育时期地上部生物量、植株含氮量和籽粒产量的方差分析
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Table 2 Variance analysis of aboveground biomass, nitrogen uptake, and grain yield at different stages of dryland maize
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因子 Factors | V6 | VT | R3 | R6 | 籽粒产量 Grain yield (t hm-2) | DM | Na | DM | Na | DM | Na | DM | Na | 郑单958 ZD958 | 2.82 | 23.50 | 6.11 | 18.49 | 10.43 | 15.56 | 16.53 | 12.49 | 7.04 | 陕单8806 SD8806 | 2.71 | 23.78 | 5.78 | 18.05 | 10.52 | 15.67 | 16.02 | 11.98 | 6.66 | 2016 | 2.79 | 23.43 | 6.27 | 16.87 | 13.27 | 12.67 | 20.57 | 10.16 | 10.94 | 2017 | 2.53 | 23.56 | 7.72 | 20.11 | 7.72 | 18.45 | 12.67 | 16.81 | 3.46 | 2018 | 2.91 | 23.63 | 6.41 | 17.27 | 13.31 | 12.07 | 19.64 | 10.36 | 8.89 | 2019 | 2.64 | 23.48 | 6.57 | 20.51 | 7.78 | 18.85 | 12.23 | 16.41 | 4.10 | N0 | 2.10 | 20.11 | 4.28 | 15.43 | 7.30 | 12.55 | 13.01 | 9.59 | 5.34 | N1 | 2.57 | 22.13 | 5.13 | 17.04 | 9.35 | 14.05 | 14.75 | 10.73 | 6.47 | N2 | 2.82 | 23.19 | 6.06 | 18.57 | 11.26 | 16.02 | 17.20 | 12.94 | 7.52 | N3 | 2.97 | 25.63 | 6.86 | 20.35 | 12.08 | 17.12 | 18.11 | 14.02 | 7.69 | N4 | 3.14 | 26.45 | 7.15 | 21.06 | 12.59 | 18.05 | 18.33 | 15.15 | 7.23 | F-value | | | | | | | | | | 年份Year(Y) | 6.10** | 0.22NS | 164*** | 219*** | 4938*** | 831*** | 5133*** | 885*** | 11735*** | 品种Variety(V) | 0.59NS | 0.85NS | 1.11NS | 0.96NS | 1.31NS | 0.37NS | 0.72 NS | 0.38 NS | 143*** | 施氮量Nitrogen(N) | 33*** | 1675*** | 714*** | 278*** | 1947*** | 335*** | 1110*** | 414*** | 654*** | 年份×品种Y×V | 0.29NS | 0.28NS | 0.71NS | 0.32NS | 0.45NS | 0.12NS | 0.81NS | 0.13NS | 34*** | 年份×施氮量Y×N | 1.74NS | 35*** | 9.31** | 4.61* | 35*** | 14*** | 58*** | 11.21** | 44*** | 品种×施氮量V×N | 0.08NS | 2.39NS | 3.32* | 1.03NS | 13.72** | 0.04NS | 11.21** | 0.11NS | 8.92** | 年份×品种×施氮量Y×V×N | 0.05NS | 1.13NS | 3.71* | 0.34NS | 15.21** | 0.01NS | 8.91** | 0.04NS | 17.12** |
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