Utilization of insoluble phosphate by Larix gmelini seedlings under phosphorus starvation Mobilization of Sparingly Soluble Phosphate by Secale cereale L. and Its Corresponded Mechanisms Effects of soluble phosphate fertilizer on Zn/Cd phytoextraction and nutrient accumulation of Sedum alfredii H. in co-contaminated soil Organic acid composition analysis of root exudation of Chinese milk vetch genotypes Mobilization of Insoluble Iron Bound Phosphate and Effective Factors by Root Cell Walls of Chinese Fir MOBILIZATION AND UTILIZATION OF SPARINGLY SOLUBLE PHOSPHATES BY VA MYCORRHIZAL FUNGUS EXTERNAL HYPHAE Ⅰ? ? ~(32)P INDIRECTLY LABELLING