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1 试验田养分含量

Table 1 Nutrients content of soil in experimental field

试验类型Experiment 年份 Year 土层 Soil layer (cm) pH 有机质 Soil organic matter (g kg-1) 全氮 Total N (g kg-1) 速效氮 Available N (mg kg-1) 有效磷 Olsen P (mg kg-1) 速效钾Available K (mg kg-1) 大田试验 Field experiment 2017 0-20 6.35 13.56 0.92 87.52 18.92 145.07 20-40 7.21 9.51 0.56 58.36 13.15 94.13 40-60 7.42 5.70 0.21 42.68 5.38 57.56 2018 0-20 6.24 14.17 0.96 89.02 19.38 158.86 20-40 7.04 10.37 0.61 60.67 12.21 98.24 40-60 7.34 6.03 0.25 49.31 6.42 68.60 土柱试验Soil column experiment 7.23 10.72 0.73 45.54 15.66 66.98