赣南废弃稀土矿采矿迹地土壤有机质·氮和磷分布特征  

Distribution Characteristics of Soil Organic Matter,Nitrogen and Phosphorus at the Mining Site in Abandoned Rare Earth Ore,Southern Jiangxi

作　　者：李奕 宋墩福 张付远[2] 罗旺 LI Yi;SONG Dun-fu;ZHANG Fu-yuan(College of Materials and Chemical Engineering,Pingxiang University,Pingxiang,Jiangxi 337000;School of Landscape Architecture,JiangxiEnvironmental Engineering VocationalCollege,Ganzhou,Jiangxi 341000)

机构地区：[1]萍乡学院材料与化学工程学院,江西萍乡337000 [2]江西环境工程职业学院园林与建筑学院,江西赣州341000

出　　处：《安徽农业科学》2021年第2期32-35,37,共5页Journal of Anhui Agricultural Sciences

基　　金：江西省教育厅科学技术研究项目(GJJ181241);萍乡学院人才引进科研启动项目。

摘　　要：为探究赣南废弃稀土矿土壤养分含量特征,对其采矿迹地的土壤有机质、氮和磷含量分布特征进行研究。结果表明:不同采矿迹地0~30 cm土层土壤有机质、氮和磷含量均表现为天然林地>堆积地>挖矿地。天然林地表层土壤有机质含量最高,其值为20.9 g/kg,有机质含量随土壤深度增加呈逐渐降低趋势;土壤全氮含量为0.062~1.473 mg/g,均随土壤深度的增加而降低;土壤水解氮含量为13.36~120.39 mg/kg;土壤全磷含量为0.076~0.524 g/kg;土壤有效磷含量为0.691~4.560 mg/kg,其含量大小有随土壤深度增加而增大的趋势。土壤有机质与全氮、水解氮和全磷呈极显著正相关(P<0.01),与有效磷呈显著正相关(P<0.05)。Distribution characteristics of organic matter,nitrogen and phosphorus at the mining site in rare earth ore,Jiangxi were studied.The results showed that the contents of soil organic matter,nitrogen and phosphorus in 0-30 cm soil layer in different mining areas were as follows:natural forest land>accumulation area>mining land.The content of organic matter in the surface soil of natural forest land was the highest,with a value of 20.9 g/kg and the content of organic matter decreased gradually with the increase of soil depth.The variation range of total nitrogen content in soil was 0.062-1.473 mg/g,which all decreased with the increase of soil depth.The variation range of soil hydrolyzed nitrogen content was 13.36-120.39 mg/kg.The variation range of total phosphorus content in soil was 0.076-0.524 g/kg.The range of available phosphorus content in soil was 0.691-4.560 mg/kg,and the content tended to increase with the increase of soil depth.Soil organic matter showed extremely significant positive correlation with total nitrogen,hydrolyzed nitrogen and total phosphorus(P<0.01),and showed significant positive correlation with available phosphorus(P<0.05).

关 键 词：稀土矿 土壤养分 赣南地区 

分 类 号：S153[农业科学—土壤学]