Cadmium-reduced selenium-enriched crop cultivation conditioner, cultivation substrate and application

A cadmium-reducing and selenium-enriched crop cultivation conditioner prepared from Scenedesmus polysaccharide and sodium selenite, combined with mesoporous silica carriers and selenium-enriched microalgae, forms a cadmium-reducing and selenium-enriched crop cultivation substrate, solving the problem of crop production in cadmium-contaminated soil and achieving the effect of selenium-enriched crops with low cadmium content.

CN120604779BActive Publication Date: 2025-11-04INST OF URBAN AGRI CHINESE ACADEMY OF AGRI SCI +1
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Patent Information

Application Number
CN202511087093.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-05
Publication Date
2025-11-04
Estimated Expiration
2045-08-05

AI Technical Summary

Technical Problem

Existing technologies are insufficient for the effective production of selenium-rich and cadmium-low crops in cadmium-contaminated soils. There is a lack of methods and technologies that can both enrich selenium and reduce cadmium, making it difficult to apply them widely in agricultural production.

Method used

A cadmium-reducing and selenium-enriched crop cultivation conditioner was prepared using *Scenedesmus polysaccharide* and sodium selenite. Through the combination of mesoporous silica carrier and selenium-enriched microalgae, a cadmium-reducing and selenium-enriched crop cultivation substrate was formed for crop cultivation.

Benefits of technology

This method has enabled crops to be not only rich in selenium but also low in cadmium, resulting in good growth and promising application prospects. It has solved the problem of crop production in cadmium-contaminated soil.

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Abstract

The application discloses a kind of rich selenium crops of reducing cadmium cultivation conditioning agent, cultivation matrix and application, belong to microalgae rich selenium and its application technical field.The conditioning agent is prepared by the following steps: S1, mesoporous silica is dispersed in Fe 3+ Solution reaction obtains mesoporous silica carrier;S2, take the algal liquid of the polycentrum pruniforme in logarithmic growth phase, adjust OD 680 To 0.5, add sodium selenite solution, light culture, centrifugal collection microalgae;S3, the microalgae obtained in step S2 is mixed with the mesoporous silica carrier obtained in step S1 according to mass ratio 10:1~5:1, add deionized water, oscillation reaction under 25 DEG C, avoid light condition, obtain the culture algal liquid;S4, the culture algal liquid is separated to obtain selenium-rich microalgae.The application has the beneficial effect that the crops cultivated by the rich selenium crops of reducing cadmium cultivation conditioning agent are not only rich in selenium but also low in cadmium content, grow well, and have good application prospect.
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