滴灌玉米临界氮稀释曲线与氮素营养诊断研究

付江鹏,贺正,贾彪,刘慧芳,李振洲,刘志

Critical nitrogen dilution curve and nitrogen nutrition diagnosis of maize with drip irrigation

Jiang-Peng FU,Zheng HE,Biao JIA,Hui-Fang LIU,Zhen-Zhou LI,Zhi LIU

表1 试验地土壤基础肥力

Table 1 Foundation fertility of soil at experimental fields

年份 Year pH 有机质 OM (g kg-1) 全氮 Total N (g kg-1) 全磷 Total P (g kg-1) 碱解氮 Avail. N (mg kg-1) 速效磷 Avail. P (mg kg-1) 速效钾 Avail. K (mg kg-1) 2017 7.98 11.45 0.80 0.51 37.37 19.04 102.52 2018 7.65 12.82 0.75 0.48 36.82 17.37 95.31