[Research advance in soil organic phosphorus].

Soil organic phosphorus (P) plays an important role in the material cycling in agro-ecosystem, and its research is vital for understanding the characteristics of P cycle in soil-plant system. This paper summed up the latest research achievements at home and abroad about soil organic P content and its affecting factors, soil organic P forms, their fractionation and determination methods, effects of fertilization on soil organic P forms, and mineralization of soil organic P. The existing problems in soil organic P study and its hotspots in future were also discussed.