Acta Agrestia Sinica
Effects of Phosphorus Fertilizer on the Growth and Seed Yield of Alfalfa
LIU Huan-xian, LI Ning, SHENG Jian-dong, FU Yan-bo, WANG Xiao-dan
. 2013, (3): 571 -575 .  DOI: 10.11733/j.issn.1007-0435.2013.03.024