一种盐碱地降盐改板提质方法

By constructing a clay-retaining layer and combining modified water irrigation with topsoil structure reconstruction, the problems of salinity and compaction in saline-alkali land management were solved. This approach enabled rapid desalination and soil structure improvement in saline-alkali land, thereby increasing soil quality and crop yield, and adapting to the management of saline-alkali land with varying degrees of salinity.

CN120202770BActive Publication Date: 2026-07-17TIANJIN ACAD OF AGRI SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN ACAD OF AGRI SCI
Filing Date
2025-05-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for managing saline-alkali land have several drawbacks: the problems of salinity and compaction are not addressed simultaneously; the synergistic mechanism of physical, chemical, and biological measures is insufficient; the improvement effect is not sustainable; and there is a lack of tiered implementation plans.

Method used

By constructing a clay-retaining layer, using modified water irrigation, and reconstructing the topsoil structure, and utilizing components such as modified zeolite powder, nano-biochar, attapulgite clay, microbial fixatives, and slow-release calcium sources, combined with modified water and topsoil amendment materials, the simultaneous resolution and long-term improvement of salinity and compaction can be achieved.

Benefits of technology

It achieves rapid desalination of saline-alkali soil, improves soil structure, enhances soil fertility, significantly reduces soil electrical conductivity and exchangeable sodium, increases soil organic matter content, and improves crop yield. It is applicable to saline-alkali soils with different salinity levels.

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Abstract

本发明涉及土壤改良技术领域,具体涉及一种盐碱地降盐改板提质方法,包括以下步骤:a)在地表以下30—40cm处构建黏粒固持层,黏粒固持层由改性沸石粉、纳米生物炭、凹凸棒粘土、微生物固定剂和缓释钙源组成,填充压实厚度为3—5cm;b)利用改性水进行灌溉以降低表层盐碱及黏粒含量,改性水是在灌溉水中添加柠檬酸、生物表面活性剂复合物、电解活化水和腐植酸钠,灌水量为60‑100方 / 亩,灌溉2次;c)向地表均匀撒施耕层改良物料进行耕层结构重建,耕层改良物料包括改性有机肥基质、硫酸亚铁络合物、钙镁磷矿物复合物、盐碱土壤微生物菌剂和生物酶促活剂,用量为1.5—2吨 / 亩,旋耕均匀,深度为18—22cm。
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