Effects of Water and Nitrogen Coupling on Chlorophyll Content and Photosythetic Rate of Winter Wheat Leaves
YANG Shi-li, ZHANG Feng-lu, JIA Xiu-ling, MA Rui-kun, YAO Yan-rong
ACTA AGRICULTURAE BOREALI-SINICA . 2008, (5): 161 -164 .  DOI: 10.7668/hbnxb.2008.05.035