A saline-alkali soil composite improver and a preparation method thereof

Through the synergistic physical, chemical, and biological effects of the saline-alkali land compound amendment, the problems of low efficiency and high environmental risk in saline-alkali land restoration have been solved, achieving soil improvement and increased crop yield.

CN122256015APending Publication Date: 2026-06-23NORTHEAST AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEAST AGRICULTURAL UNIVERSITY
Filing Date
2026-04-07
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing saline-alkali land remediation technologies are inefficient, costly, and pose significant environmental risks, making it difficult to achieve efficient and sustainable soil improvement and crop yield enhancement.

Method used

A composite soil conditioner for saline-alkali land is used, which includes ion-intercalated modified expanded vermiculite, humic acid, polyacrylamide, urea, diammonium phosphate, potassium sulfate, and iron-modified biochar-attapulgite composite carrier immobilized microbial agents. Through the synergistic effects of physical adsorption, chemical modification, and biological activation, it improves soil structure and nutrient supply.

Benefits of technology

It significantly reduces soil salinity, improves soil fertility, promotes crop growth, and achieves sustainable restoration of soil ecological functions and increased crop yield.

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Abstract

The application discloses a saline-alkali soil composite improver and a preparation method thereof, relates to the technical field of soil improvement, and raw materials include 18-22 parts of ion intercalation modified expanded vermiculite, 10-14 parts of humic acid, 0.2-0.4 parts of polyacrylamide, 6-9 parts of urea, 5-7 parts of diammonium phosphate, 4-6 parts of potassium sulfate, and 10-18 parts of iron modified biochar-attapulgite composite carrier immobilized microbial inoculant. The saline-alkali soil composite improver has excellent saline-alkali soil improvement effect.
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