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4 磷肥施用深度对夏玉米磷转运的影响

Table 4 Effects of phosphorus application depth on P translocation of summer maize

处理 Treatment	2017			2018
处理 Treatment	转运量 Translocation amount (kg hm^-2)	转运率 Translocation rate (%)	贡献率 Contribution rate (%)	转运量 Translocation amount (kg hm^-2)	转运率 Translocation rate (%)	贡献率 Contribution rate (%)
CK	11.85 d	24.66 c	23.96 c	11.05 d	20.30 b	14.08 c
P5	15.95 c	28.11 b	27.31 b	16.02 c	23.77 b	18.22 b
P10	26.45 b	34.90 a	37.83 a	20.51 b	28.36 a	21.30 ab
P15	31.55 a	37.79 a	39.90 a	24.89 a	30.16 a	23.95 a
P20	27.50 b	37.61 a	37.46 a	22.88 ab	30.08 a	23.34 a