Interaction of protozoa and phosphate-solubilizing bacteria on rock phosphate dissolution

Abstract

Abstract: Phosphorusp is one of the limited factors for agricultural production. Both protozoa and microorganisms play important roles in the P transformation of soil. Through pure culture and soil incubation experiments, it was found that the tested protozoa of Colopodia,Oxytricna and Australothrix had significant activity in dissolving rock phosphate. Soil available P increased largely due to the inoculation. A large amount of the dissolved P was absorbed by the organisms, and released after chloroform fumigation. Significant amount of the P was changed to biomass P. However, no significant interaction was found between the tested protozoa and phosphate solubilizing bacteria.

Key words: Wetland, Soil microbial biomass C, N, and P, Bulk density, Soil clay granule, Profiles

CLC Number:

S154.34

SUN Yanxin, LIN Qimei, ZHAO Xiaorong. Interaction of protozoa and phosphate-solubilizing bacteria on rock phosphate dissolution[J]. cje, 2003, (3): 84-86.

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