不同耐低氮性玉米品种的花后碳氮积累与转运特征
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吴雅薇, 蒲玮, 赵波, 魏桂, 孔凡磊, 袁继超
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Characteristics of post-anthesis carbon and nitrogen accumulation and translocation in maize cultivars with different low nitrogen tolerance
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WU Ya-Wei, PU Wei, ZHAO Bo, WEI Gui, KONG Fan-Lei, YUAN Ji-Chao
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表4 氮肥水平对不同耐低氮性玉米吐丝后非结构性碳水化合物转运的影响
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Table 4 Effects of N level on non-structural carbohydrate (NSC) translocation of maize with different low N tolerance after silking stage
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年份 Year | 品种 Cultivar | 氮肥处理 N treatment (kg hm-2) | 花前NSC转运量 NSCRA (t hm-2) | 花前NSC转运率 NSCRR (%) | 花后NSC积累量 NSCAA (t hm-2) | 花前NSC转运对 籽粒NSC贡献率 CNSCRA (%) | NSC 收获指数 NSCHI | 2018 | ZH311 | 0 | 0.24 a | 75.70 b | 4.55 d | 5.01 b | 0.97 b | | | 150 | 0.11 cd | 50.32 c | 5.25 c | 2.07 c | 0.96 c | | | 300 | 0.01 e | 10.50 d | 5.90 b | 0.33 d | 0.94 e | | | 450 | 0.00 e | 0.00 e | 6.49 a | 0.00 d | 0.92 f | | XY508 | 0 | 0.21 a | 94.19 a | 2.83 f | 7.10 a | 0.98 a | | | 150 | 0.16 b | 75.32 b | 4.11 e | 3.78 b | 0.97 b | | | 300 | 0.15 bc | 70.64 b | 4.42 d | 4.22 b | 0.97 b | | | 450 | 0.10 d | 46.94 c | 5.24 c | 1.81 c | 0.95 d | 2019 | ZH311 | 0 | 0.17 a | 44.03 c | 2.55 d | 6.40 b | 0.89 b | | | 150 | 0.08 c | 18.34 e | 4.00 c | 2.04 cd | 0.88 b | | | 300 | 0.00 d | 0.00 f | 5.79 a | 0.00 d | 0.85 c | | | 450 | 0.00 d | 0.00 f | 5.44 a | 0.00 d | 0.85 c | | XY508 | 0 | 0.20 a | 66.25 a | 2.13 d | 9.44 a | 0.91 a | | | 150 | 0.19 a | 53.97 b | 3.48 c | 5.23 b | 0.92 a | | | 300 | 0.05 c | 32.73 d | 4.70 b | 4.18 bc | 0.91 a | | | 450 | 0.01 d | 3.94 f | 5.78 a | 0.25 d | 0.91 a |
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