不同耐低氮性玉米品种的花后碳氮积累与转运特征

吴雅薇, 蒲玮, 赵波, 魏桂, 孔凡磊, 袁继超

Characteristics of post-anthesis carbon and nitrogen accumulation and translocation in maize cultivars with different low nitrogen tolerance

WU Ya-Wei, PU Wei, ZHAO Bo, WEI Gui, KONG Fan-Lei, YUAN Ji-Chao

表5 氮肥水平对不同耐低氮性玉米品种氮素转运的影响

Table 5 Effects of N level on N translocation of maize with different low N tolerance after silking

年份 Year 品种 Cultivar 氮肥处理 N treatment (kg hm-2) 花前氮素转运量 NRA (kg hm-2) 花前氮素转运率 NRR (%) 花后氮素积累量 NAA (kg hm-2) 花前氮素转运对 籽粒氮素的贡献 CNRA (%) 氮素收获 指数 NHI 2018 ZH311 0 80.14 a 67.63 a 33.01 c 70.85 a 0.70 a 150 74.92 b 63.92 b 37.91 c 66.42 a 0.69 ab 300 84.54 a 61.20 b 40.06 c 67.93 a 0.65 bc 450 52.60 c 44.81 d 70.23 a 43.09 c 0.60 de XY508 0 42.06 d 54.03 c 32.75 c 56.92 b 0.64 c 150 34.18 e 45.43 d 55.73 b 38.10 cd 0.65 c 300 33.70 e 42.61 d 59.89 ab 36.24 d 0.63 cd 450 22.80 f 29.34 e 62.98 ab 27.86 e 0.57 e 2019 ZH311 0 19.23 bc 48.01 b 22.99 e 45.75 b 0.61 bc 150 17.39 c 35.49 c 63.40 c 21.65 d 0.63 abc 300 9.63 d 12.76 e 119.36 a 7.51 e 0.59 c 450 21.82 b 27.86 d 83.40 b 20.51 d 0.58 c XY508 0 22.49 b 61.79 a 17.35 e 56.44 a 0.62 abc 150 20.73 bc 50.87 b 44.90 d 31.51 c 0.67 ab 300 20.09 bc 38.47 c 68.60 c 22.71 d 0.70 a 450 28.19 a 47.94 b 67.70 c 29.77 c 0.65 abc