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SONG Yanbin, WANG Xikuan, XIA Yan, HOU Jinkai, ZHAO Rui. Distribution and Enrichment Characteristics of Selenium in Soil and Crops in Luoyang City, Henan Province[J]. Rock and Mineral Analysis, 2022, 41(4): 652-662. DOI: 10.15898/j.cnki.11-2131/td.202109280130
Citation: SONG Yanbin, WANG Xikuan, XIA Yan, HOU Jinkai, ZHAO Rui. Distribution and Enrichment Characteristics of Selenium in Soil and Crops in Luoyang City, Henan Province[J]. Rock and Mineral Analysis, 2022, 41(4): 652-662. DOI: 10.15898/j.cnki.11-2131/td.202109280130
shu

Distribution and Enrichment Characteristics of Selenium in Soil and Crops in Luoyang City, Henan Province

  • No.1 Institute of Geological and Mineral Resources Survey, Henan Geological and Mineral Exploration and Development Bureau, Luoyang 471023, China

More Information
  • Received Date: September 27, 2021
  • Revised Date: October 10, 2021
  • Accepted Date: May 31, 2022
  • Available Online: September 08, 2022
    Abstract
  • HIGHLIGHTS
    (1) Beans, peanuts, rapeseed, sesame, wheat, millet and sweet potato are selenium-enriched crops in the study area, and Stachys floridana Schuttl.ex Benth is a selenium-enriched Chinese medicinal material. Luoyang is a favorable area for developing selenium-enriched characteristic agriculture.
    (2) Soil selenium content controls selenium content in crops. When soil selenium content does not change significantly, soil pH is the main influencing factor.
    (3) While improving the level of selenium in crops by applying selenium fertilizer, it is necessary to prevent the harm of excessive selenium by determining the level of selenium content with scientific experiments.
    BACKGROUND

    The analysis of selenium enrichment characteristics in various crops planted in a certain area and investigation and evaluation of selenium content in selenium fertilizer crops can provide a basis for the development of selenium-enriched characteristic agriculture. It is important to find out the influencing factors of selenium content in different crops for developing selenium-enriched agricultural products.

    OBJECTIVES

    To understand the distribution and enrichment characteristics of Se in soil and crops in Luoyang City.

    METHODS

    The selenium resources detailed investigation project area and other agricultural planting areas in Luoyang City, Henan Province were chosen as the research object. The selenium content of 22 kinds of crops and their root soil were measured by ICP-MS, and the selenium enrichment characteristics of different crops were studied.

    RESULTS

    The average value of soil selenium in the study area was close to the standard of selenium-enriched soil in Henan Province. The selenium-enriched sites in acidic soil, neutral soil, alkaline soil, and overall soil accounted for 28.61%, 43.72%, 41.99%, and 40.56%, respectively. According to the evaluation of selenium enrichment coefficient of various crops, the study area was suitable for the development of selenium-enriched beans, oil-bearing crops, wheat, millet, sweet potato and other characteristic crops and selenium-enriched traditional Chinese medicine Stachys floridana Schuttl.ex Benth, but not suitable for the development of selenium-enriched corn. The correlation of selenium content in different crops with soil selenium content and pH showed that soil selenium content was the decisive factor of selenium content in crops, followed by soil pH.

    CONCLUSIONS

    In order to promote the development of selenium-enriched agricultural products in the study area, selenium fertilizer can be applied to improve the selenium content of crops. Crops planted in low selenium background soil, especially fruits, are suitable for applying selenium fertilizer, while millet planted in high selenium background soil is not suitable for applying selenium fertilizer.

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