摘要
硒是重要的生命元素之一,对普定县耕地土壤硒分布特征进行研究有利于当地合理有效的开发利用富硒土地资源。本文通过对研究区3613件表层土壤样品中全硒含量进行检测分析,发现硒在土壤中的分布特征表现为明显富集于表层土,表层土壤硒含量在不同类型的土壤中的特征为:紫色土>黄壤>石灰土>水稻土,而在不同成土母岩的土壤中表现为:岩浆岩>白云岩>碎屑岩>灰岩;土壤硒元素主要来源于成土母岩,硒在土壤中的分布则受到土壤性质的影响,主要影响因素为pH值、土壤有机质及土壤磷的含量;本文调查发现研究区富硒(0.4-3.0 mg/kg)耕地面积为45.74万亩,占全县耕地总面积的75.05%。
Selenium is an essential element of life,and the study is beneficial to the rational and effective development and utilization of selenium-rich land resources.In this paper,from the analysis of 3613 surface soil samples,the characteristics of selenium in the soil are obviously concentrated in the surface soil,and the characteristics of the soil selenium content performed as purple soil>yellow soil>lime soil>rice soil.In the soil of different soil-forming rocks:igneous rock>dolomite>debris rock>grey rock.The soil selenium element mainly comes from the soil master rock,the distribution of selenium in the soil is affected by the soil nature,the main influencing factors are pH,soil organic matter and soil phosphorus content.The investigation found that the study area of selenium rich(0.4 to 3.0 mg/kg)arable land area of 0.45 million mu,accounting for 75.05 percent of the total area of cultivated land in the county.
作者
李艳
鄢兴旭
姜再菊
罗沙
孟超领
LI Yan;YAN Xing-xu;JIANG Zai-ju;LUO Sha;MENG Chao-ling(Guizhou Rongyuan Environmental Technology Co.,Ltd.,Guiyang 550081,Guizhou,China;Guizhou Coal Mine Geological Engineering Advisory and Geological Environment Monitoring Center,Guiyang 550081,Guizhou,China)
出处
《贵州地质》
2020年第3期372-377,共6页
Guizhou Geology
基金
贵州省耕地质量地球化学调查评价项目.
关键词
耕地土壤
硒
普定县
分布特征
Cultivated soil
Selenium
Puding
Distribution
