Multi-solid-waste comprehensive utilization nutrient soil and preparation method thereof

The invention discloses multi-solid-waste comprehensive utilization nutrient soil and a preparation method thereof, and relates to the technical field of solid waste reutilization. According to the invention, beneficial components and excellent properties in solid waste materials including phosphogypsum, phosphate tailings, red mud, manganese slag and sludge are fully utilized, the nutrient soil capable of promoting long-term growth of plants is developed on the premise of solving a matrix required by plant growth, and the nutrient soil integrates water retention, air permeability, salt storage and slow release, and has a good application prospect. The problem that a large amount of nutrient soil is only breathable is solved. The cost of the nutrient soil can be greatly reduced, so that the aim of promoting comprehensive utilization of large-scale solid wastes is fulfilled, and the survival crisis of industrial and mining enterprises at the present stage is eliminated; the production method of the nutrient so