Acta Agrestia Sinica
Effect of Nitrogen Fertilizer on Nitrogen Accumulation in Alfalfa and the Content of Nitrogen in Soil
QI Peng, LIU Xiao-jing, LIU Yan-nan, HAO Feng, KUAI Jia-lin
Acta Agrestia Sinica . 2015, (5): 1026 -1032 .  DOI: 10.11733/j.issn.1007-0435.2015.05.019