Phosphorus Move Down by Leaching and Related to Olsen –P of Surface Soil in Two Paddy Soils
LI Wei-zheng1, WANG Gat-ping1, ZHANG Huan-chao1*, CAO Zhi-bong2, AI Chang3
JOURNAL OF NANJING FORESTRY UNIVERSITY . 2007, (03): 52 -56 .  DOI: 10.3969/j.jssn.1000-2006.2007.03.011