Preparation method of fly ash-based selenium-rich nutrient soil, product and application thereof
By controlling the proportion of fly ash added and the process design, a fly ash-based selenium-enriched nutrient soil with low heavy metal content was prepared and applied in conjunction with microalgae water-soluble fertilizer. This solved the problems of soil fertility imbalance and heavy metal pollution risks caused by fly ash in agriculture and achieved a highly efficient selenium-enriched yield increase effect.
CN122397589APending Publication Date: 2026-07-17GUANGDONG ENERGY GROUP SCIENCE & TECHNOLOGY RESEARCH INSTITUTE CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG ENERGY GROUP SCIENCE & TECHNOLOGY RESEARCH INSTITUTE CO LTD
- Filing Date
- 2026-06-09
- Publication Date
- 2026-07-17
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Figure CN122397589A_ABST
Abstract
本发明涉及一种粉煤灰基富硒营养土的制备方法及其产品和应用，所述方法包括：（1）将粉煤灰与水混合，再与腐熟生物质混合，得到混合料；（2）将混合料与调酸剂、复合肥、保水剂混合，调节pH后再与灭菌剂混合，得到灭菌物料；（3）将灭菌物料与有机肥、微生物菌剂混合，得到所述粉煤灰基富硒营养土；所述粉煤灰基富硒营养土中，重金属含量的上限阈值为：镉不高于0.3 mg / kg、铬不高于150 mg / kg、铅不高于70 mg / kg、汞不高于0.5 mg / kg、砷不高于20 mg / kg；所述粉煤灰基富硒营养土中，硒含量的下限阈值为不低于0.4 mg / kg。通过控制粉煤灰添加比例，制备得到了具有低重金属含量并且具有丰富硒含量的富硒营养土。
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