Effects of Medicago sativa on Soil Nutrients and Microbial Biomass under Different Years in the Arid Area of Northern Weihe River Basin
ZHANG Bao-quan, LI Hong-hong, MA Hu, CHENG Ji-min, JIN Jing-wei, ZHU Ren-bin, CHENG Guang-qing
Acta Agrestia Sinica . 2015, (6): 1190 -1196 .  DOI: 10.11733/j.issn.1007-0435.2015.06.009