The land in this area contains selenium.

Selenium content in cultivated soil greater than 0.4 mg per kg is regarded as the classification standard for selenium-rich cultivated soil, and selenium content of 0.2 to 0.4 is classified as selenium-containing cultivated land. According to this standard, Xingren City’s designated area of ??selenium-rich cultivated land is 314,500 acres, accounting for 34.02% of the city’s cultivated land area, and the designated selenium-containing cultivated land area is 572,600 acres, accounting for 61.94% of the city’s cultivated land area.