皖西南富硒土壤分布及富硒農產品調查

摘要 本文以土地質量地球化學調查數據為基礎，分析了皖西南富硒土壤的分布、無公害綠色富硒土壤、無公害富硒農產品產地適宜區、綠色富硒農產品產地適宜區及綠色富硒食品等情況。結果表明，富硒土壤面積占總評價面積的4.97%，主要分布在CS、SH、GZ、TZS和TF等鄉鎮。無公害綠色富硒土壤面積約占富硒土壤總量的85.57%，富硒土壤達到無公害農產品產地環境標準和綠色食品產地環境標準的面積一致。無公害富硒農產品產地適宜區占評價區總面積的4.25%。綠色富硒食品產地適宜區占評價區總面積的4.24%，其中AA級適宜區占1.80%，A級適宜區占1.78%。富硒土壤主要為自然背景成因，且富硒土壤具有有機質含量較高的特征，推測富硒土壤成因為吸附型富硒。查明了特色農產品綠色富硒水稻、茶葉和栝樓生產區。該結果為研究區天然富硒土地資源開發利用提供參考。

關鍵詞 富硒土壤；無公害；綠色富硒；有機質；富硒類型

中圖分類號 S159" " 文獻標識碼 A" "文章編號 1007-7731（2024）14-0071-06

DOI號 10.16377/j.cnki.issn1007-7731.2024.14.016

Survey of Selenium-rich soil distribution and Selenium-rich agricultural products in

southwest Anhui Province

ZHANG Yinge1" " AN Bang1" " TAO Nai1" " WANG Wei1" " ZHANG Lida1" " MA Jilin2

（1Anhui Institute of Exploration Technology， Hefei 233001， China;

2Anhui Experimental Institute of Geology， Hefei 233001， China）

Abstract Based on the land quality geochemical survey data in southwest Anhui Province， the distribution of Selenium-rich soil， pollution-free green Selenium-rich soil， suitable areas of pollution-free Selenium-rich agricultural produce， suitable areas of green Selenium-rich agricultural produce and green Selenium-rich food in this area were analyzed. The results showed that the area of Selenium-rich soil accounted for 4.97% of the total evaluated area， and it was mainly distributed in CS， SH， GZ， TZS and TF townships. The area of pollution-free green Selenium-rich soil accounted for about 85.57% of the total Selenium-rich soil， and the area of Selenium-rich soil reached the environmental standards of pollution-free agricultural products and green food. The suitable area of pollution-free Selenium-rich agricultural produce area accounts for 4.25% of the total area of the evaluation area. The suitable area of green Selenium-rich food origin accounted for 4.24% of the total area of the evaluation area， of which the AA-level suitable area accounted for 1.80% and the A-level suitable area accounted for 1.78%. The origin of Selenium-rich soil was mainly natural background， and the Selenium-rich soil had the characteristics of high organic matter content. It was speculated that the Selenium-rich soil was caused by adsorption type Selenium enrichment. The production areas of green Selenium-rich rice， tea and Trichosanthes were identified. The research results provided a reference for the development and utilization of natural Selenium-rich land resources in the study area.

Keywords Selenium-rich soil; pollution-free; green Selenium-rich; organic matter; Selenium-rich type

富硒土壤是一種富含硒元素的土壤，而硒是一種對人體健康至關重要的微量元素[1-2]。人體所需的硒主要來源于食物，而農作物中的硒主要來源于土壤。近年來，隨著人們對健康飲食的關注度不斷提高，富硒土壤的研究和開發利用也得到了廣泛關注[3-5]。富硒土壤可廣泛應用于富硒農產品的種植生產[6-7]，是開發天然富硒農產品的基礎條件，因此開展富硒土壤資源分析具有重要意義。硒在全球土壤中的分布不均勻，全球土壤硒含量變幅為0.01～2.00 mg/kg，均值為0.40 mg/kg[8]。……