Spatial Variability of Soil Organic Matter in Typical Area of the Yellow River Delta
ZHANG Xiao-guang, CHEN Ming-li, LIU Pei-ru, ZHU Xiu-zhi, LI Shi-mei
JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI . 2017, (5): 27 -30 .  DOI: 10.11988/ckyyb.20160141