Effects of Nitrogen Ratio of Base Fertilizer and Topdressing on Uptake,Utilization of Nitrogen and Yield in Winter Wheat
ZHANG Xu, WANG Yilun, HAN Yanlai, TAN Jinfang
ACTA AGRICULTURAE BOREALI-SINICA . 2010, (5): 193 -197 .  DOI: 10.7668/hbnxb.2010.05.039