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
图2 基于地上部生物量和氮浓度的甜菜临界氮稀释曲线
Fig. 2 Critical nitrogen dilution curve based on above-ground biomass and nitrogen concentration in sugar beet