Phosphorus-inhibiting matrix soil based on phosphate tailings as well as preparation method and application of phosphorus-inhibiting matrix soil

The invention belongs to the technical field of ecological protection materials, and provides phosphorus-tailing-based phosphorus-inhibiting matrix soil, which is prepared from phosphorus tailings, a physical property adjusting filler, an organic matter filler, an aggregate agent and a phosphorus fixing agent according to the mass ratio of (70 to 100): (10 to 15): (5 to 10): (0.01 to 5): (0.1 to 5). The phosphate tailings are used as main materials, and the waste phosphate tailings are utilized; the physical property adjusting filler can enable the matrix soil to have a better loose structure and air permeability; the organic filler can increase the organic content of the matrix soil; the aggregate agent can preserve water and fertilizer, so that the matrix soil is loose and porous; the phosphorus fixing agent can react with water-soluble phosphorus in the phosphate tailings to generate insoluble phosphorus or adsorb the water-soluble phosphorus into a phosphorus fixing agent structure, so that the loss of ph