聚天门冬氨酸螯合氮肥减量基施对东北春玉米的增效机制
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唐会会,许艳丽,王庆燕,马正波,李光彦,董会,董志强
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Increasing spring maize yield by basic application of PASP chelating nitrogen fertilizer in northeast China
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Hui-Hui TANG,Yan-Li XU,Qing-Yan WANG,Zheng-Bo MA,Guang-Yan LI,Hui DONG,Zhi-Qiang DONG
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表4 CN与PASP-N处理不同施肥量对玉米氮素利用效率的影响
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Table 4 Effects of different CN and PASP-N on maize nitrogen use efficiency
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处理
Treatment | 施肥量
N application rate (kg hm-2) | 氮肥偏生产力
Partial factor productivity from applied N (kg kg-1) | 氮肥农学效率Agronomic efficiency of applied N (kg kg-1) | 氮肥表观利用率
Recovery efficiency of applied N (%) | 氮肥生理利用率 Physiological efficiency of applied N (kg kg-1) | | CN1 | 112.5 | 103.4±4.0 b | 5.2±1.8 bc | 0.6±0.1 bc | 8.7±2.0 b | | CN2 | 225.0 | 54.2±1.7 d | 5.4±1.4 bc | 0.6±0.1 bc | 11.2±2.8 b | | CN3 | 337.5 | 34.6±1.5 e | 3.1±0.9 c | 0.6±0.1 bc | 3.3±1.6 c | | PASP-N1 | 75.0 | 156.4±13.3 a | 5.3±2.1 bc | 1.3±0.0 a | 4.0±1.5 c | | PASP-N2 | 150.0 | 83.1±3.3 c | 9.6±2.7 a | 0.7±0.2 b | 16.7±1.3 a | | PASP-N3 | 225.0 | 53.4±2.4 d | 6.3±1.1 b | 0.4±0.1 c | 16.5±2.2 a |
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