贵州玉屏油茶示范园区富硒耕地土壤特征及成因探讨  

Characteristics and Geological Background of Se-rich Soil in the Yuping Camellia Oleifera Demonstration Park,Guizhou

作　　者：林泽渊 周宗赞 张锡贵[1] 杨贵龙 LIN Ze-yuan;ZHOU Zong-zan;ZHANG Xi-gui;YANG Gui-long(The 101st Geological Party,Guizhou Bureau of Geology and Mineral Resources,Kaili,Guizhou 556000)

机构地区：[1]贵州省地质矿产勘查开发局一0一地质大队,贵州凯里556000

出　　处：《四川地质学报》2022年第1期123-127,共5页Acta Geologica Sichuan

基　　金：贵州玉屏油茶产业示范园区土壤地球化学特征研究项目(黔地矿科合[2018]8号);贵州省玉屏县耕地质量地球化学调查评价项目(黔地矿耕调2017-10)联合资助

摘　　要：通过对玉屏油茶示范园区土壤、岩石和油茶样品的系统采集,测定各指标含量,评价发现大面积富硒耕地土壤。总结富硒耕地土壤地球化学特征表明,表层土壤硒含量为0.26~0.75mg·kg^(-1),平均含量为0.48mg·kg^(-1)。富硒耕地土壤面积占90%,pH值、有机质、Cd、Hg等指标对硒地球化学行为有重要影响。土壤硒来源于黑色岩系,热卤水沿深大断裂萃取成矿热液中的硒并运移至地表,经风化成土作用形成富硒耕地土壤。Large area of soil rich in selenium is found in the Yuping Camellia Oleifera Demonstration Park,Guizhou.The topsoil contains Se of 0.26-0.75 ppm with the average of 0.48 ppm.Area of the Se-rich soil makes up 90%of the total area.pH value,organic matter,Cd and Hg have an important effect on geochemistry behavior of selenium.Selenium in soil was derived from black rock series.

关 键 词：富硒耕地土壤 黑色岩系 地质背景 玉屏油茶示范园区 

分 类 号：S153[农业科学—土壤学]