不同氮效率玉米品种对土壤硝态氮时空分布及农田氮素平衡的影响

屈佳伟, 高聚林, 于晓芳, 王志刚, 胡树平, 孙继颖, 苏治军, 谢岷, 青格尔

Effects of Maize Varieties with Different Nitrogen Efficiencies on Temporal and Spatial Distribution of Soil Nitrate and Field Nitrogen Balance

Jia-Wei QU, Ju-Lin GAO, Xiao-Fang YU, Zhi-Gang WANG, Shu-Ping HU, Ji-Ying SUN, Zhi-Jun SU, Min XIE, Ge-Er QING

表1 不同氮效率玉米品种产量、氮素吸收效率和氮肥利用率

Table 1 Yield, nitrogen uptake efficiency and nitrogen recovery efficiency of different nitrogen use efficiency maize varieties

年份Year 品种 Variety 施氮处理 Nitrogen treatment 产量 Yield (t hm-2) 氮素吸收效率 NUpE (kg kg-1) 氮肥利用率NRE (%) 氮肥农学效率NAE (kg kg-1) 2012 郑单958 ZD958 0 N 10.48 b 3.22 a 300N 13.23 a 1.10 b 39.12 a 9.14 a 450N 13.33 a 0.96 b 43.06 a 6.33 b 金山27 JS27 0 N 9.85 c 3.15 a 300N 11.63 b 1.08 b 37.24 b 5.93 b 450N 12.86 a 1.02 b 53.16 a 6.70 a 蒙农2133 MN2133 0 N 8.32 b 2.24 a 300N 9.95 a 0.82 b 32.67 a 5.43 b 450N 10.60 a 0.74 b 40.25 a 7.59 a 内单314 ND314 0 N 7.34 c 2.28 a 300N 8.65 b 0.85 b 33.42 a 4.39 b 450N 10.30 a 0.69 c 36.64 a 9.88 a 变异来源Source of variation 品种 Variety (V) ** ** ** ns 施氮处理Nitrogen treatment (NT) ** ** ** ns 品种×施氮处理V×NT ns ** ** ns 2013 郑单958 ZD958 0 N 10.56 b 2.56 a 300N 13.36 a 0.86 b 43.29 a 9.33 a 450N 14.13 a 0.75 b 45.34 a 7.93 b 内单314 ND314 0 N 8.46 c 2.05 a 300N 10.86 b 0.61 b 25.03 a 7.99 b 450N 12.83 a 0.56 b 30.69 a 9.71 a 四单19 SD19 0 N 8.84 b 2.03 a 300N 11.43 a 0.71 b 24.21 a 8.63 a 450N 12.16 a 0.58 c 33.45 a 7.37 a 变异来源Source of variation 品种 Variety (V) ** ** ** ns 施氮处理Nitrogen treatment (NT) ** ** * ns 品种×施氮处理V×NT ns * ns ns