Survey of Selenium-rich soil distribution and Selenium-rich agricultural products in southwest Anhui Province
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 4.96% 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 85.51% 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.
Selenium-rich soilpollution-freegreen Selenium-richorganic matterSelenium-rich type
NETL
NSTL
万方数据
