Isolation, identification of phosphate-solubilizing microorganism (PSM) and optimization of solubilizing phosphate

Phosphate-solubilizing microorganism (PSM) can promote the effective utilization of soil phosphorus, and play an important role in the control of non-point source pollution of soil. Three PSMs (P1, P2 and P3) with stable phosphate -solubilizing ability were isolated from the turfgrass soil in Baotou, in which the solubilizing phosphate ability of P1 was higher than that of the other two strains. The results about a series experiment on composite bacteria system showed the order of phosphate-solubilizing ability was P1:P3 P1:P2 P1:P2:P3跃P2:P3, which confirmed that P1 had high ability of dissolving phosphorus. The molecular identification showed that P1 belonged to Burkholderia sp., it had great application value in practice.