Study on the Difference of Nitrogen Efficiency of Alfalfa and its Influencing Factors
WANG Jing, LIU Xiao-jing, TONG Chang-chun, WANG Xue
Acta Agrestia Sinica . 2022, (4): 889 -900 .  DOI: 10.11733/j.issn.1007-0435.2022.04.014