中国资源综合利用2025，Vol.43Issue(6)：19-26,8.DOI:10.3969/j.issn.1008-9500.2025.06.005
多固废保水土壤改良剂在矿山修复中的应用
Application of Multi-Solid Waste Water-Retaining Soil Amendment in Mine Remediation
摘要
Abstract
Inner Mongolia Autonomous Region is a region with abundant mineral resources,with a temperate continental climate and a fragile ecological environment.Long term development and utilization of open-pit coal mines have caused serious ecological problems such as soil erosion,land desertification,and grassland degradation in mining areas.The experiment takes the open-pit coal mine yard in arid desert as the research object,applies water-retaining slow-release biological fertilizer soil amendment,and plants various grasses for mine soil remediation.The results show that after applying soil amendments to the mining soil in the western mining area,the soil nutrients and organic matter content are significantly increased,with the increase of the amount of bio organic fertilizer added,the nitrogen,phosphorus,potassium,and organic matter content in the soil all increase.With the increase of planting years,soil nitrogen,phosphorus,potassium,and organic matter show an overall trend of"increase-decrease-increase",while pH value shows a trend of"decrease-increase-unchanged".In the third year of planting,the treatment with the highest soil nutrient content is A8.As the amount of water retaining agent added increases,the soil water retention rate continues to improve,when the amount of water-retaining agent added per 667 m2 of land is 900 kg,the soil water retention rate reaches its maximum.In the experimental field,seedings are made of Cleistogenes songorica,Agropyron cristatum,Artemisia sphaerocephala,Stipa breviflora,Astragalus laxmannii,and Limonium aureum,in the second and third years of planting,statistical analysis is conducted on the plant species,biomass,density,and coverage of the aboveground parts of the plants,all six plants in the experiment are successfully planted.In the third year of planting,among the 16 replicates,the maximum total coverage is 91%,with an average of 76%,the maximum dry matter biomass of aboveground vegetation is 45.66 g,corresponding to treatment A8.Based on the comprehensive analysis of soil nutrients,organic matter,pH value,water-retention rate,and the growth of aboveground plants,the most suitable solution for soil improvement in mines is the fertilization combination of A8,as a water-retaining agent,the amount of porous silicon added per 667 m2 of land is 300 kg,and the amount of bio organic fertilizer added is 3 000 kg.The nutrient content,organic matter content,and water-retention rate of the soil in the third year of restoration are higher than before restoration,the average coverage of aboveground plants can reach 76%,the self-restoration function of the mine soil is established,and the ecological function is improved,achieving the goal of soil improvement and vegetation restoration in the mining area.关键词
土壤改良剂/土壤理化性质/矿山土壤修复Key words
soil amendment/soil physical and chemical properties/mine soil remediation分类
资源环境引用本文复制引用
王彩虹,张永锋,赵啟行,张印民..多固废保水土壤改良剂在矿山修复中的应用[J].中国资源综合利用,2025,43(6):19-26,8.基金项目
国家重点研发项目"北方防沙带大型露天矿区生态保护与修复技术及示范(2023YFF1306000)"子课题(2023YFF1306003):多固废协同制备保水增肥土壤改良剂技术 （2023YFF1306000）
内蒙古自治区"揭榜挂帅"项目"粉煤灰与脱硫石膏绿色低碳消纳技术研发与示范"(2024JBGS0035). （2024JBGS0035）
