土壤深松下磷肥施用深度对夏玉米根系分布及磷素吸收利用效率的影响

陈晓影,刘鹏,程乙,董树亭,张吉旺,赵斌,任佰朝

Effects of phosphorus fertilizer application depths on root distribution and phosphorus uptake and utilization efficiencies of summer maize under subsoiling tillage

Xiao-Ying CHEN,Peng LIU,Yi CHENG,Shu-Ting DONG,Ji-Wang ZHANG,Bin ZHAO,Bai-Zhao REN

表5 磷肥施用深度对夏玉米磷肥偏生产力和磷利用效率的影响

Table 5 Effects of phosphorus application depth on P partial productivity and P utilization efficiency of summer maize

年份 Year 处理 Treatment 磷肥偏生产力 PPFP (kg kg-1) 磷肥表观利用效率 PAUE (%) 磷肥农学利用效率 PAE (kg kg-1) 2017 P5 78.99 c 12.79 c 6.02 c P10 88.35 b 27.77 b 15.39 b P15 95.46 a 41.90 a 22.49 a P20 85.02 b 27.87 b 12.05 b 2018 P5 94.29 c 16.68 c 5.98 c P10 105.37 b 25.04 b 17.05 b P15 115.99 a 37.94 a 27.67 a P20 104.97 b 27.93 b 16.65 b 变异来源 Source of variation 年份 Year (Y) *** NS * 磷肥施用深度Phosphorus application depth (P) *** *** *** 年份×磷肥施用深度 Y×P NS * NS