Acta Agrestia Sinica
Effect of Rotation and Fertilization to Alfalfa Productivity on the Loess Plateau
HAO Ming-de, ZHANG Chun-xia, WEI Xiao-rong, WANG Xu-gang, GAO Chang-qing
. 2004, (3): 195 -198 .  DOI: 10.11733/j.issn.1007-0435.2004.03.006