淮南矿区复垦土壤存在土壤板结、透水性和保水性差等问题，严重影响了农业生产;此外，大量餐厨垃圾得不到有效处理，造成了环境破坏和资源浪费。研究以淮南潘一矿区复垦土壤为研究对象，向复垦土壤添加不同质量分数的餐厨垃圾好氧发酵产物(Fermentation Products of Kitchen Waste，FPKW)，通过一维垂直入渗试验，测定各处理土壤体积质量、孔隙度、土壤入渗量、湿润锋及土壤水分特征曲线的变化，探究FPKW作为土壤改良剂，改良矿区复垦土壤结构组成以及土壤水力特性的可行性。研究结果显示，添加了不同质量分数的FPKW后，土壤体积质量降低2。26％～13。53％，土壤孔隙度增加16。16％～51。83％，土壤饱和含水量增加3。71％～3。76％，优化了土壤结构，提高了土壤的保水性;当FPKW添加的质量分数为5％时，土壤体积质量降低效果和孔隙度增大效果最佳，当质量分数为3％时入渗效果与饱和含水量最佳，因此在质量分数为5％时综合效果最佳。使用FPKW作为土壤改良剂，不仅能够有效改善矿区复垦土壤的结构和水力特性，还能促进餐厨垃圾的资源化利用，为矿区土壤的可持续管理和环境保护提供一个新的思路和方法。研究对于推动矿区土壤复垦和农业可持续发展具有重要意义。
Effects of aerobic fermentation products from kitchen waste on the structure and hydraulic properties of reclaimed soil
The reclaimed soils of the Huainan mining area face issues such as soil compaction,poor water permeability,and inadequate water retention,severely impacting agricultural productivity.Besides,the accumulation of untreated kitchen waste leads to environmental degradation and resource wastage.This study focuses on the reclaimed soils of the Huainan Pan Yi mining area,incorporating different mass fractions of Fermentation Products of Kitchen Waste(FPKW)into the soil.Experimental methods systematically involved mixing FPKW into the soil at three different mass fractions:3％,5％,and 7％.The soil samples were thoroughly homogenized to ensure even distribution of the FPKW.Then,one-dimensional vertical infiltration tests were conducted,measuring changes in soil bulk density,porosity,soil infiltration rate,wetting front,and soil water characteristic curves for each treatment.The feasibility of using FPKW as a soil amendment to improve the structural composition and hydraulic properties of reclaimed mining soils was explored.The results show that adding different mass fractions of FPKW leads to a reduction in soil bulk density by 2.26％to 13.53％,an increase in soil porosity by 16.16％to 51.83％,and an increase in soil saturated water content by 3.71％to 3.76％,optimizing soil structure and enhancing water retention.Specifically,a 5％mass fraction of FPKW results in the best reduction of soil bulk density and the greatest increase in porosity,while a 3％mass fraction yields the best results for infiltration and saturated water content.Overall,the most comprehensive improvements are at a 5％mass fraction.Using FPKW as a soil amendment not only effectively improves the structural and hydraulic properties of reclaimed mining soils but also promotes the resourceful utilization of kitchen waste.This approach provides a new strategy for the sustainable management of reclaimed soils in mining areas and environmental protection.These findings have significant implications for advancing soil reclamation and sustainable agricultural development in similar regions.
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