Differences of Nitrogen Efficiency in Henan Wheat Varieties
GUO Zhan-ling, SHEN A-lin, KOU Chang-lin, MA Zheng-hua, WANG Shou-gang
ACTA AGRICULTURAE BOREALI-SINICA . 2009, (2): 185 -189 .  DOI: 10.7668/hbnxb.2009.02.038