Abstract: The effect of phosphate fertilizer and manure on soil test phosphorus and phosphorus leaching in different phosphorus levels soil was studied.Soil column was used in the experiment of simulation.The results showed that the content of CaCl₂P,Olsen-P and soluble phosphorus in leaching water of soil were all increased significantly after applying phosphate fertilizer and manure in different phosphorus levels soil.The content of the various forms of phosphorus in the soil could be increased by improving soil phosphorus levels.This content was also increased significantly by the increasing phosphate fertilizer and manure.Maximum phosphorus absorption capacity(Qm)and phosphorus sorpt ion index(PSI)were decreased after applying phosphate fertilizer and manure.The degree of phosphorus sorption saturation(DPS)was increased with the increase of the rate phosphate fertilizer and manure.The degree of phosphorus sorption saturation could be increased by improving soil phosphorus levels.The main conclusions were that the degree of phosphorus sorption saturation and the rate of leached phosphorus from the soil were increased with the increase of the rate phosphate fert ilizer and manure in different phosphorus levels soil,however,the phosphorus sorption index was decreased.There was high correlation between the rate of leached phosphorus from the soil and soil test phosphorus.The soil test phosphorus could be increased by increasing phosphate fertilizer or manure and soil phosphorus levels.

Key words: Phosphate fertilizer, Organic manure, Phosphorus leaching, Soils phosphorus levels

CLC Number: 

• S153.