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

陈晓影,刘鹏,程乙,董树亭,张吉旺,赵斌,任佰朝,韩坤

The root-layer regulation based on the depth of phosphate fertilizer application of summer maize improves soil nitrogen absorption and utilization

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

表1 试验田养分含量

Table 1 Nutrients content of soil in experimental field

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) 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