Seven phosphorus-solubilizing bacterial strains were isolated from 30 soil samples collected from 7 different sites in Sichuan province,and a high efficiency phosphate-solublizing bacterial strain named YM3-2S was obtained.The highest phosphate-releasing amount of strain YM3-2S was 40.96 mg/L,and the phosphate-releasing ratio was 20%.Based on the results of morphology,physiological and biochemical properties and phylogenetic analysis of 16S rDNA sequence,strain YM3-2S was identified as Burkholderia cepacia.