LIN Zeyuan,LI Yonggang,RAO Hongjuan,et al.Geochemical Characteristics and Evaluations of Soil Selenium in Yinjiang County of Guizhou Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(02):35-39.[doi:10.11942/j.issn1002-2767.2023.02.0035]
贵州省印江县土壤硒地球化学特征及评价
- Title:
- Geochemical Characteristics and Evaluations of Soil Selenium in Yinjiang County of Guizhou Province
- 文章编号:
- 6
- 文献标志码:
- A
- 摘要:
- 为促进富硒土壤资源的开发利用,基于贵州省印江县耕地质量地球化学调查评价项目的数据,分析土壤中硒含量分布特征与成土母质、土壤类型、土地利用类型之间的关系,根据《土地质量地球化学评价规范》(DZ/T 0295-2016)和贵州省富硒土壤评价分级标准(试行),评价全区硒元素地球化学等级特征及富硒农产品。结果表明,印江县土壤硒含量为0.08~3.22 mg·kg-1,平均值为0.32 mg·kg-1,背景值为0.29 mg·kg-1;区内硒元素的分布与成土母岩、土壤类型、土地利用类型密切相关;土壤硒元素地球化学等级以含硒为主,含硒土壤面积为40 760.00 hm2,占比75.60%;富硒土壤面积为10 786.66 hm2,占比20.00%,具有开发富硒农产品的良好基础。同时,少量农产品富硒,研究区富硒土壤资源具有良好的开发利用前景。
- Abstract:
- In order to promote the development and utilization of selenium-rich soil resources, based on the project of geochemical investigation and evaluation of cultivated land quality in Yinjiang County, Guizhou Province, analyze the relationship between the content and distribution characteristics of selenium in soil and soil parent material, soil type and land use type, according to the ‘Land Quality Geochemical Evaluation Specification ’ (DZ/T 0295-2016) and the grading standard of selenium-rich soil in Guizhou Province (Trial), to evaluate the geochemical grade characteristics of selenium elements and selenium-rich agricultural products in the region. The results showed that the soil selenium content in Yinjiang County was 0.08-3.22 mg·kg-1, the average value was 0.32 mg·kg-1 and the background value was 0.29 mg·kg-1. The distribution of selenium in the region was closely related to the parent rock, soil type and land use type. The geochemical grade of selenium element in the soil was mainly selenium-containing, with an area of 40 760.00 ha and 75.60% of the total area. Among them, the area of selenium-rich soil was 10 786.66 ha and 20.00% of the total area, which had a good basis for developing selenium-rich agricultural products. Since some of the agricultural products were selenium-rich, the selenium-rich soil resources in the study area have good prospects for development and utilization.
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备注/Memo
贵州省地质矿产勘查开发局地质科研项目(黔地矿科合[2019]3号)。