明溪县富硒土壤资源调查及影响因素探讨

Investigation of Se-rich soil Resource in Mingxi County and Discussion on Influencing Factors

本文较系统的总结了明溪县富硒土壤资源的分布特征。明溪县耕地表层土壤硒元素含量范围为0.07mg/kg～1.02mg/kg,土壤硒元素含量等级为适量及高等级面积比占耕地面积的50.92%,面积约63.5km^2。不同地质背景和土壤类型对土壤硒分布均存在较大差异。调查表明区域地质背景是控制土壤硒含量元素的主要因素,土壤黏粒含量、有机质含量、酸碱性与土壤硒元素含量具有明显的正相关性。

This paper systematically summarizes the distribution characteristics of selenium rich soil resources in Minxi county.The content of selenium in the surface soil of Mingxi County is 0.07-1.02mg/kg,and the content of selenium in the soil is appropriate and high-grade area is 50.92%,area of approximately is 63.5km2.The distribution of selenium in soil was different between different Geological background and soil type.The investigation showed that the regional Geological background is the main factor in controlling the selenium content of soil.The content of soil Sticky particles,organic matter,Acid-alkaline have obvious positive correlation with the content of soil selenium.