5Nautiyal C S. An efficient microbiological growth medium for screening phosphate solubilizing microorganisms [ J ]. FEMS Microbiol Lett, 1999,70 : 265-270.
6Malboobi M A, Owlia P, Bebhabani M, et al. Solubilization of organ- ic andinorganic phosphates by three highly efficient soil bacterial iso- lates[ J]. World J Microbiol Biotechnol, 2009,25 : 1471-1477.
7Kpomblekou K, Tabatabal M A. Effect of low-molecular weight organ- ic acids on phosphorus release and phytoavailability of phosphorus in phosphate rocks added to soils[ J]. Agr Ecosyst Environ, 2003,100: 275-284.
8Narsian V, Patel H H. Aspergilus aculeatus as a rock phosphate sol- ubilizer[ J]. Soil Biol Biochem, 2000,32:559-565.