Abstract:Taking reclaimed soil of the subsided land resulting from coal-mining as the research object in Jincheng, Shanxi province, the experiment studied the effects of organic manure (M), inorganic fertilizer (NPK) and organic+inorganic fertilizer (NPK+M) application for 3 years on soil physical and chemical properties, phosphorus fractions. The results showed that: there was no significant difference in soil pH, bulk density, total nitrogen and total phosphorus among different fertilization treatments, and the content of organic matter in M treatment was significantly higher than that of single fertilizer treatment, and the content of soil available phosphorus in NPK+M treatment was higher than that in the rest treatments, but the difference was not significant. NPK+M treatment could significantly increase Ca8-P content of the soil inorganic phosphorus fractions, and all fertilization treatments significantly improved the content of Fe-P, while the difference was not significant. The growth of O-P and Ca10-P was not obvious in all treatments. The contents of different inorganic phosphorus components in the control treatment generally declined, and Ca8-P and Fe-P declined more obviously. M treatment had significant effect on active and medium active organophosphorus, NPK+M treatment impacted active and medium stable organophosphorus more obviously, and NPK treatment had no significant effect on organophosphorus. The correlation analysis showed that Ca2-P, Ca8-P, Al-P, Fe-P, medium activity, medium stable organophosphorus and available phosphorus had significant positive correlation, and Ca8-P, medium active organophosphorus and available phosphorus were very significantly correlated.