Responses of the spatial-temporal distribution of winter wheat (Triticum aestivum) roots and yield to different ratios of nitrogen sources
XIONG Shu-Ping, WANG Xiao-Chun, LI Chun-Ming, MA Xin-Ming, DU Shao-Yong, ZHANG Ying-Wu, LIN Shi-Zhao
Chin J Plant Ecol . 2011, (7): 759 -768 .  DOI: 10.3724/SP.J.1258.2011.00759