Effect of Nitrogen Levels on Yield,Nitrate and Nitrogen Utilization of Chinese Cabbage
LI Ruo-nan, ZHANG Yan-cai, HUANG Shao-wen, TANG Ji-wei, WANG Li-ying
ACTA AGRICULTURAE BOREALI-SINICA . 2010, (S2): 220 -225 .  DOI: 10.7668/hbnxb.2010.S2.049