郑雄伟, 向　武, 刘　磊, 魏凌霄, 胡　青, 王俊锋, 白　洋, 石　仲, 罗军强, 张元培, 吴　颖, 司可夫, 赵　辞. 鄂中丘陵区土壤硒分布特征及资源量研究−以湖北省钟祥市为例[J]. 土壤通报, 2024, 55(2): 360 − 373. DOI: 10.19336/j.cnki.trtb.2023031301
引用本文: 郑雄伟, 向　武, 刘　磊, 魏凌霄, 胡　青, 王俊锋, 白　洋, 石　仲, 罗军强, 张元培, 吴　颖, 司可夫, 赵　辞. 鄂中丘陵区土壤硒分布特征及资源量研究−以湖北省钟祥市为例[J]. 土壤通报, 2024, 55(2): 360 − 373. DOI: 10.19336/j.cnki.trtb.2023031301
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ZHENG Xiong-wei, XIANG Wu, LIU Lei, WEI Ling-xiao, HU Qing, WANG Jun-feng, BAI Yang, SHI Zhong, LUO Jun-qiang, ZHANG Yuan-pei, WU Ying, SI Ke-fu, ZHAO Ci. Distribution Characteristics and Resources of Soil Selenium in the Hilly Area of Central Hubei Province -- A Case Study of Zhongxiang, Hubei Province[J]. Chinese Journal of Soil Science, 2024, 55(2): 360 − 373. DOI: 10.19336/j.cnki.trtb.2023031301
Citation: ZHENG Xiong-wei, XIANG Wu, LIU Lei, WEI Ling-xiao, HU Qing, WANG Jun-feng, BAI Yang, SHI Zhong, LUO Jun-qiang, ZHANG Yuan-pei, WU Ying, SI Ke-fu, ZHAO Ci. Distribution Characteristics and Resources of Soil Selenium in the Hilly Area of Central Hubei Province -- A Case Study of Zhongxiang, Hubei Province[J]. Chinese Journal of Soil Science, 2024, 55(2): 360 − 373. DOI: 10.19336/j.cnki.trtb.2023031301
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鄂中丘陵区土壤硒分布特征及资源量研究以湖北省钟祥市为例

Distribution Characteristics and Resources of Soil Selenium in the Hilly Area of Central Hubei Province -- A Case Study of Zhongxiang, Hubei Province

    摘要
  • 摘要:
    目的 土壤硒资源的利用和开发越来越受到人们重视，探明富硒土壤的分布状况，系统掌握土壤硒资源数量分布特征则是合理开发和利用土壤硒资源的前提条件。
    方法 本研究以鄂中丘陵区湖北省钟祥市为研究区，以1∶5万土地质量地球化学调查评价工作为基础，用多目标区域地球化学调查规范中的双层网格化采样模式，采集分析2479件表层土壤样、60件深层土壤样、148件有效态元素土壤样，分析土壤硒含量分布特征及其与土壤类型关系，并用硒含量－土层深度直线关系式估算土壤硒资源量。
    结果 研究区内深层土壤的硒含量普遍小于表层土壤硒含量；土壤硒赋存形态以惰性态为主，惰性态占73.05%，中等利用态占17.69%，交换态占8.31%，易利用态仅占1.40%；区内表层（0 ~ 0.2 m）和深层（1.2 ~ 1.8 m）土壤硒资源量分别为29.22 t和168.44 t；储硒量最大的两类土壤是潮土和水稻土。
    结论 研究区土壤硒资源量较丰富，深层硒资源量大于表层；土壤中含硒物质主要来自于成土母质和生物化学活动的积累；土壤硒含量与有机质含量呈正相关，为此可通过加大秸秆还田力度、增施农家肥等措施提高土壤有机质含量，继而增加土壤硒资源数量。本研究结果可为湖北省土壤硒资源开发利用和富硒产业高质量发展提供理论依据。

     

    Abstract:
    Objective More and more attention has been paid to the utilization and exploitation of Selenium (Se) resources. It is a prerequisite for rational exploitation and utilization to find out the distribution characteristics of Se-rich soils and to know the Se resources of soils systematically.
    Method In this study, based on the investigation and evaluation of 1:50,000 land quality geochemistry in Zhongxiang, the hilly area of central Hubei Province. This study used the two-layer grid sampling model in the multi-objective Regional geochemistry survey standard, 2479 topsoil samples, 60 deep soil samples and 148 available elemental soil samples were collected and analyzed to analyze the distribution characteristics of soil Se content and its relationship with soil types, the relationship between Se content and soil depth was used to estimate the amount of soil Se resources.
    Result The content of Se in the deep soil was lower than that in the surface soil. The main forms of Se in soil were inert state (73.05%), medium use state (17.69%), exchange state (8.31%) and easy use state (1.40%). The content of Se in surface soil (0 ~ 0.2 m) and deep soil (1.2 ~ 1.8 m) was 29.22 t and 168.44 t, respectively. The two major Se storage soil types are Chao soil and paddy soil.
    Conclusion The Se resources in the study area are abundant, in the deep layer is larger than in the surface layer. Se in the area is mainly derived from the accumulation and superposition of the parent material and biochemical activities. The content of soil Se is closely related to human activities, and is positively related to the content of organic matter. The results obtained can provide important theoretical basis for the development and utilization of soil Se resources and the high-quality development of Se-enriched industry in Hubei Province.

     

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