摘要
为探究污泥协同泥炭施加对矿区废弃地土壤的影响,以阜新海州露天矿废弃地土壤为研究对象,设置单施污泥(5%、10%、15%)、单施泥炭(5%、10%、15%)、污泥与泥炭配施(污泥5%+泥炭10%、污泥10%+泥炭10%、污泥15%+泥炭10%)以及空白对照共10个处理,并通过盆栽种植黑麦草研究不同污泥和泥炭施用量对矿区废弃地土壤有机质、全氮、有效磷、速效钾、pH值、含水率、多酚氧化酶和蔗糖酶活性的影响.结果表明,与对照相比,在矿区废弃地土壤中单施污泥、单施泥炭、污泥与泥炭配施均能增加土壤有机质、全氮、有效磷含量及多酚氧化酶和蔗糖酶活性;单施污泥15%、单施泥炭处理能显著增加土壤速效钾含量;单施污泥15%、单施泥炭(10%、15%)、污泥与泥炭配施处理能显著增加土壤含水率.TOPSIS分析结果表明,单施污泥对矿区废弃地土壤的综合改良效果优于污泥与泥炭配施;其中,单施污泥15%处理与对照相比,土壤有机质、全氮、有效磷、速效钾含量以及含水率和多酚氧化酶、蔗糖酶活性分别增加 151.10%、495.37%、1130.83%、39.71%、115.04%、78.98%、109.58%,对矿区废弃地土壤的改良综合效果优于其他处理.综上,单施污泥15%能够作为矿区废弃地土壤改良技术推荐使用.
Abstract
In order to explore the effects of sludge combined with peat application on the soil of the wasteland in mining areas,in this study,a total of 10 treatments were set up,including single sludge application(5%,10%,and 15%),single peat application(5%,10%,and 15%),sludge and peat combined application(sludge 5%+peat 10%,sludge 10%+peat 10%,and sludge 15%+peat 10%),and blank control.The effects of different sludge and peat application rates on soil organic matter,total nitrogen,available phosphorus,available potassium,pH,moisture content,polyphenol oxidase and sucrase activities in the wasteland soil were studied by planting ryegrass in pots.The results showed that compared with the control,single application of sludge,single application of peat,and combined application of sludge and peat in the soil of the wasteland in the mining area could increase the content of organic matter,total nitrogen,available phosphorus,and the activities of polyphenol oxidase and sucrase.Sludge application by 15%and peat treatment alone could significantly increase the content of available potassium in soil.Sludge application by 15%,peat application by peat alone,and sludge and peat combined treatment could significantly increase soil moisture content.The results of TOPSIS analysis showed that the comprehensive improvement effect of sludge application on the soil of mine wasteland was better than that of sludge and peat combined application.Among them,compared with the control,soil organic matter,total nitrogen,available phosphorus,available potassium,water content,polyphenol oxidase activity and sucrase activity increased by 151.10%,495.37%,1130.83%,39.71%,115.04%,78.98%,and 109.58%,respectively,and the comprehensive effect of soil improvement on mine wasteland was better than that of other treatments.In summary,15%of sludge alone could be recommended as a soil improvement technology for wasteland in mining areas.
国家科技期刊平台
NSTL
维普
万方数据