8Basak B B,Biswas D R. Influence of potassium solubilizing mi- croorganism(Bacillus mucilaginosus) and waste mica on po- tassium uptake dynamics by sudan grass (Sorghum vulgare Pers. ) grown under two Alfisols. Plant Soil, 2009,317 : 235 - 255.
9Welch S A,Ullman W J. The effect of organic acids on plagio- clase dissolution rates and stoichiometry[J]. Geochim. Cos- mochim. Acta, 1993,57:2725- 2736.
10Lian B,Wang B, Pan M,Liu C Q,Teng H H. Microbial. re- lease of potassium form K-bearing minerals by thermophilic fungus Aspergillus fumigatus[J]. Geochim. Cosmochim. Ac- ta,2008,72:87-98.
