The Influence of Different Sulfur Level on Alfalfa Output and Biology Characters
ANDan-dan, WANGHui-jun, LIUZhong-kuan, TAOPei-jun
ACTA AGRICULTURAE BOREALI-SINICA . 2007, (S1): 152 -155 .  DOI: 10.7668/hbnxb.2007.S1.037