Acta Agrestia Sinica
Coupling Effects of Applied Nitrogen,Planting Density on Western Wheatgrass Seed Yield by Model Analysis
WANG Quan-zhen, HAN Jian-guo, ZHOU He, LIU Fu-yuan, ZHONG Yong
. 2006, (2): 99 -105 .  DOI: 10.11733/j.issn.1007-0435.2006.02.001