1results about How to "Inhibit salt return" patented technology

This invention belongs to the technical field of phosphogypsum solid waste utilization and saline-alkali land improvement, specifically disclosing a phosphogypsum-based water-locking and temperature-regulating amendment for saline-alkali land. The phosphogypsum-based water-locking and temperature-regulating amendment provided by this invention comprises phosphogypsum dihydrate, potassium magnesium sulfate composite salt, modified paraffin wax, bentonite, modified humic acid, sodium alginate, modified water-retaining agent, composite bacterial agent, and water. This amendment has a core-shell-bridge three-layer composite structure, achieving a synergistic effect of targeted alkali regulation, long-term water retention, temperature-sensitive adaptation, and biological synergistic effect, solving core technical problems such as poor compatibility, easy salinization, and weak adaptability in saline-alkali land improvement. This invention also provides methods for preparing and applying this amendment.