Influence of nitrogen addition on the productivity of desert steppe under different grazing intensities
JIN Zhengliang, FAN Wentao, ZHANG Pujin, ZHANG Guolong, CHU Wenbin, WU Dianjun, Qinggele
Journal of Northern Agriculture . 2022, (6): 63 -71 .  DOI: 10.12190/j.issn.2096-1197.2022.06.09