摘要
为研究郧西县典型核桃种植区土壤稀土元素地球化学特征,在连片种植区内共采集20组土壤及果实样品,分析了土壤REE组成特征、配分模式及参数特征,并探讨了土壤稀土元素对核桃果实中主要矿质营养元素的影响.结果表明:研究区土壤中稀土元素平均值为141.86 mg/kg,低于湖北省A层土壤REE背景值.研究区内所有采样点配分模式曲线呈现出右倾的轻稀土富集模式,土壤中表现出较为明显的Eu负异常和较为微弱的Ce负异常.土壤稀土元素与果实中N、K、Ca、Zn、Cu、Mn、Sr、Ni、Mo、Cd、Co等元素具有显著正相关性,与果实中As、Pb具有显著负相关性.
Abstract
In order to study the geochemical characteristics of rare earth elements in the soil of typical walnut pro-duction area in Yunxi,20 soil and walnut samples in the contiguous planting area are collected.The soil REE composition features,distribution patterns,parameters and the effects on the main mineral nutrients in walnuts are analyzed.The results show that the average value of rare earth elements in the soil were 141.86 mg.kg,which was lower than the background value A-layer soil in Hubei Province.The distribution pattern curve of all sam-pling points in the area showed a right-leaning geometric shape and light rare earths in the soil were relatively en-riched.The soil showed obvious negative Eu anomalies and weak negative Ce anomalies.There was a significant positive correlation between soil rare earth elements and N,K,Ca,Zn,Cu,Mn,Sr,Ni,Mo,Cd,Co in wal-nuts and there was a significant negative correlation with As and Pb.
基金项目
湖北省科技发展专项(42000022205T000000150)
维普
万方数据