基于磷肥施用深度的夏玉米根层调控提高土壤氮素吸收利用
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陈晓影,刘鹏,程乙,董树亭,张吉旺,赵斌,任佰朝,韩坤
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The root-layer regulation based on the depth of phosphate fertilizer application of summer maize improves soil nitrogen absorption and utilization
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Xiao-Ying CHEN,Peng LIU,Yi CHENG,Shu-Ting DONG,Ji-Wang ZHANG,Bin ZHAO,Bai-Zhao REN,Kun HAN
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表2 磷肥施用深度对植株中氮积累量、转运及吸收利用的影响
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Table 2 Effects of phosphate fertilizer application depth on nitrogen accumulation, translocation, absorption and utilization in plants
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年份 Year | 处理 Treatment | 氮素积累量 Accumulation amount (kg hm-2) | 营养器官向籽粒 的转运量 Translocation amount (kg hm-2) | 营养器官向 籽粒的转运率 Translocation rate (%) | 氮素吸收效率 NAE (kg kg-1) | 氮肥偏生产力 NPFP (kg kg-1) | R2 | R6 | 2017 | CK | 144.59 e | 204.62 e | 34.71 d | 32.03 b | 64.96 e | 24.32 d | P5 | 168.11 d | 225.28 d | 41.69 cd | 33.81 ab | 71.52 d | 26.33 cd | P10 | 209.55 b | 253.50 c | 57.87 ab | 37.04 ab | 80.48 c | 29.45 ab | P15 | 226.23 a | 283.34 a | 64.22 a | 38.74 a | 89.95 a | 31.82 a | P20 | 199.50 c | 264.56 b | 48.99 bc | 34.22 ab | 83.99 b | 28.34 bc | 年份 Year | 处理 Treatment | 氮素积累量 Accumulation amount (kg hm-2) | 营养器官向籽粒 的转运量 Translocation amount (kg hm-2) | 营养器官向 籽粒的转运率 Translocation rate (%) | 氮素吸收效率 NAE (kg kg-1) | 氮肥偏生产力 NPFP (kg kg-1) | R2 | R6 | 2018 | CK | 164.71 e | 228.13 d | 46.91 c | 50.47 b | 72.42 d | 29.44 c | P5 | 205.48 d | 278.45 c | 55.83 b | 51.76 ab | 88.40 c | 31.43 c | P10 | 209.86 c | 280.63 c | 56.34 b | 52.14 ab | 89.09 c | 35.12 b | P15 | 245.50 a | 311.45 a | 67.42 a | 53.49 a | 98.87 a | 38.66 a | P20 | 225.24 b | 295.08 b | 58.11 b | 51.84 ab | 93.68 b | 34.99 b |
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