内蒙古地区甜菜临界氮浓度稀释模型的构建及应用

张加康, 李斐, 史树德, 杨海波

Construction and application of the critical nitrogen concentration dilution model of sugar beet in Inner Mongolia, China

ZHANG Jia-Kang, LI Fei, SHI Shu-De, YANG Hai-Bo

表1 试验区土壤基础理化性质

Table 1 Physical and chemical properties of soils in experimental fields

年份 Year 地点 Site 有机质 Organic matter (g kg-1) 速效磷 Available P (mg kg-1) 速效钾 Available K (mg kg-1) 全氮 Total N (g kg-1) pH 2017 内蒙古农业大学教学农场 Teaching Farm of Inner Mongolia Agricultural University 24.6 48.0 162.0 1.5 8.6 2018 赤峰市林东镇 Lindong Town, Chifeng City 13.0 12.5 114.2 0.7 8.2 2018 内蒙古农业大学教学农场 Teaching Farm of Inner Mongolia Agricultural University 36.2 7.9 240.0 1.7 8.3