本文以土地质量地球化学调查数据为基础,分析了皖西南富硒土壤的分布、无公害绿色富硒土壤、无公害富硒农产品产地适宜区、绿色富硒农产品产地适宜区及绿色富硒食品等情况。结果表明,富硒土壤面积占总评价面积的4.97%,主要分布在CS、SH、GZ、TZS和TF等乡镇。无公害绿色富硒土壤面积约占富硒土壤总量的85.57%,富硒土壤达到无公害农产品产地环境标准和绿色食品产地环境标准的面积一致。无公害富硒农产品产地适宜区占评价区总面积的4.25%。绿色富硒食品产地适宜区占评价区总面积的4.24%,其中AA级适宜区占1.80%,A级适宜区占1.78%。富硒土壤主要为自然背景成因,且富硒土壤具有有机质含量较高的特征,推测富硒土壤成因为吸附型富硒。查明了特色农产品绿色富硒水稻、茶叶和栝楼生产区。该结果为研究区天然富硒土地资源开发利用提供参考。

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.