Dynamic of Yield of Alfalfa, Soil Water and Nutrient Content in the Production of Alfalfa in Beijing
CHUNLiang, LIShu-ying, ZHANGHuai-wen, YANGXue-wen, XINXiao-ping, YANGGui-xia, TANGHua-jun
ACTA AGRICULTURAE BOREALI-SINICA . 2007, (S1): 144 -147 .  DOI: 10.7668/hbnxb.2007.S1.035