磷资源利用新途径的探索──磷矿的微生物处理

Exploration for Utilizing Low/Middle Grade Phosphorous Resources──Treatment of Phosphate by Microorganisms

溶磷微生物能将不溶性磷源转化为水溶性或枸溶性磷源，从而提供了一条利用中低品位磷块岩的新途径。本文回顾了溶磷微生物的研究与应用情况；介绍了用中低品位磷块岩、肥土、稻糠与溶磷微生物混合制成的菌磷肥田间试验所取得的良好结果；讨论了微生物的溶磷机理。由于对能源及资源的节省，利用溶磷微生物处理中低品位磷块岩生产磷肥将具有巨大的经济潜力。

Phosphate Solubilizing microorganisms are able to convert insoluble phosphate resources into water or citric acid soluble ones,so it provides .a new approach to utilize low/middle grade phosphate rocks. In this paper, the investigation and application of phosphate solubilizing microorganisms were reviewed. The good results of field experiments of phosphate fertilizer made from low grade phosphate rock. Fertile soil and rice bran with phosphate solubilizing microorganisms were obtained. The mechanism of solubilizing phosphate was also discussed. It is of great economic potential to produce phosphorous fertilizer using low/middle grade phosphate rocks by phosphate solubilizing microorganisms because of the dramatic decrease of energy and resource consumptions.