沈阳农业大学学报2025，Vol.56Issue(2)：53-62,10.DOI:10.3969/j.issn.1000-1700.2025.02.006
古龙酸母液与木霉菌联合施用对铁尾矿库土壤的改良效果
Effect of Combined Application of Residue after Evaporation and Trichoderma on Amelioration of Iron Tailings Pond Soil
摘要
Abstract
[Objective]Iron tailing ponds with poor soil properties and low vegetation survival rate need effective measures for ecological reclamation.[Methods]Residue after evaporation of industrial vitamin C production(G)and Trichoderma(M)can provide low molecular weight organic acids and microorganisms for the rehabilitation of iron tailings ponds.In this paper,residue after evaporation and Trichoderma were applied to iron tailings pond soil,and ryegrass was planted through potting experiments,and the growth physiological indexes of ryegrass,content of soil nutrients,activity of soil enzymes,and structure of soil bacterial communities were measured,so that it is clear that the combination(GM)of residue after evaporation and Trichoderma can be useful for the ecological recultivation of iron tailing pond ecological reclamation feasibility.[Results]The results showed that compared with the control,the GM combined treatment significantly increased the biomass of ryegrass in iron tailing pond soil by 39.9%,increased the leaf soluble sugar content by 62.5%,and reduced the leaf MDA content by 45.5%,and above indicators were significantly better than the two single treatments,indicating synergistic effect between G and M treatments.The GM combined treatment significantly increased the effective phosphorus and quick-acting potassium content of slag by 1.53 times and 0.21 times,respectively,and the soil enzyme composite index by 9.01 times,which also had synergistic effects on the quick-acting nutrient content and enzyme activity indexes mentioned above,and the GM combined treatment remodeled the structure of the soil bacterial community,increased the abundance of beneficial bacterial phyla and genera,and synergistically increased the total abundance and diversity of soil bacteria.[Conclusion]The above results showed that compared with single application,GM combined application could further increase the fast-acting nutrient content and enzyme activity of iron tailing slag,improve the soil bacterial structure,increase plant resistance,and ultimately promote the further increase of plant biomass,which is a significant synergistic effect,and it is suitable to be used in iron tailing ponds to improve the reclamation effect.关键词
古龙酸母液/木霉菌/铁尾矿库/植物抗逆性指标/土壤性质Key words
residue after evaporation/Trichoderma/iron tailings pond/plant stress resistance index/soil properties分类
环境科学引用本文复制引用
孔涛,李佳,曾泽宇,鲍斯诺,汤家喜,赵晓亮..古龙酸母液与木霉菌联合施用对铁尾矿库土壤的改良效果[J].沈阳农业大学学报,2025,56(2):53-62,10.基金项目
鄂尔多斯市科技突围"揭榜挂帅"重大项目(JBGS2024010) （JBGS2024010）
辽宁省"兴辽英才计划"项目(XLYC2203077) （XLYC2203077）
辽宁省应用基础研究计划项目(2022JH2/101300123) （2022JH2/101300123）
国家重点研发计划课题项目(2017YFC1503105) （2017YFC1503105）
