EN中文
Estimation of Soil Organic Matter Based on Four Methods and Effect of Sampling Number on Estimation Accuracy
LI Xiang, PAN Yu-Chun, ZHAO Chun-Jiang, WANG Ji-Hua
SCIENTIA GEOGRAPHICA SINICA . 2007, (5): 689 -694 .  DOI: 10.13249/j.cnki.sgs.2007.05.689