Sandy soil modifier with phosphorus stabilizing effect and preparation method thereof

Abstract

The invention discloses a sandy soil improver with a phosphorus stabilizing effect and a preparation method thereof. The method has the advantages that firstly, a sludge composting process is improved, the performance of a sludge composting product is improved, and the sludge composting cost is reduced; and secondly, a phosphorus stabilizing effect is given to sludge compost, and the application prospect is expanded.

Description

technical field [0001] The invention relates to the technical field of soil improvers, in particular to a sandy soil improver with phosphorus stabilizing effect and a preparation method thereof. Background technique [0002] Sandy soil has poor structure and weak water and fertilizer retention capacity. In order to obtain high yield of crops, excessive chemical fertilizers are often used for planting crops on sandy soil. Due to the different migration and transformation of nitrogen, phosphorus and potassium fertilizers in the soil, the amount of absorption and utilization of crops is different, resulting in the excessive phosphorus content in sandy soil for intensive planting, which hinders crop growth and easily causes water eutrophication and environmental pollution. The products after the harmless treatment of sludge have good water absorption and water retention properties, and are excellent materials for sandy soil improvement. However, the harmless treatment of sludge...

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Problems solved by technology

However, the harmless treatment of sludge composting is difficult due to the difficulty of dehydration, the large amount of materials such as rice husks and straws, the high cost of fermentation treatment, and the high density of the product, which is easy to agglomerate and is not easy to fully combine with the soil, so the soil improvement effect cannot be fully exerted.