An organic soil amendment suitable for use in poor soils and a method of making the same
By using a hydrochloric acid-ethanol confined dispersion system and a precise reaction process, the problems of low grafting rate and insufficient active sites of humic acid in the aminosilane modification process were solved, and an organic amendment that can be stably retained in barren soil and retain biological activity was prepared, thus achieving synergistic enhancement of soil fertility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN SOIL & FERTILIZER INST
- Filing Date
- 2026-06-26
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the effective grafting rate of humic acid in aminosilane modification is low due to silane self-polymerization, excessive consumption of active sites, and competition for multi-step reaction windows, resulting in insufficient retention of natural activity and making it difficult to achieve long-term improvement in barren soils.
By constructing a hydrochloric acid-ethanol confined dispersion system, and employing a partial carboxyl activation strategy and a three-step precision reaction process involving pre-hydrolyzed silane, simultaneous dropwise addition, and pH program control, an organic amendment suitable for infertile soil was prepared, ensuring that humic acid remains stably on the soil particle surface and retains its biological activity.
It significantly improves the soil conditioner's adhesion and biological activity, while simultaneously increasing soil pH, organic matter content, cation exchange capacity, field water holding capacity, and nitrogen, phosphorus, and potassium nutrient availability, thus improving soil physical structure and chemical fertility and achieving an organic combination of short-term improvement effects and long-term effects.
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