Effects of Interaction between Nitrogen and Density on Photosynthetic Characteristics after Anthesis and Grain Yield of Winter Wheat
CAO Qian, HE Ming-rong, DAI Xing-long, JIA Dian-yong
ACTA AGRICULTURAE BOREALI-SINICA . 2012, (4): 206 -212 .  DOI: 10.3969/j.issn.1000-7091.2012.04.040