Acta Agrestia Sinica
Study on Diurnal Photosynthetic Characteristics in Different Alfalfa Leaf Layers in Loess Plateau
HAN Qing-fang, JIA Zhi-kuan, WANG Jun-peng, WAN Su-mei, YANG Bao-ping, DONG Zhi-xin
. 2009, (5): 558 -563 .  DOI: 10.11733/j.issn.1007-0435.2009.05.004