Why is the mercy area in Hubei called "the sun capital of the world"?

What you want to say is selenium capital. Selenium is another name of Enshi City. Selenium is the only proven independent selenium deposit in the world, with the largest selenium deposit and the richest natural biological selenium resources in the world. It is known as "the first natural selenium-enriched biosphere in the world" and the only city in the world that has won the title of "Selenium Capital of the World". Various crops and Chinese herbal medicines produced contain a lot of selenium, which can protect eyesight, improve immunity, prevent cancer and resist aging if eaten regularly.

18 17, a Swedish scientist Berzelius discovered a new element with similar properties to tellurium. According to the name of tellurium (originally meaning the earth), he named it selenium, which means the moon. Since then, scientists have done a lot of research, especially in the past 20 years. Selenium plays a very important role in human beings, and there are many selenium-deficient and selenium-deficient areas in the world. Enshi Prefecture, Hubei Province has a rare independent selenium deposit in the world, which is the first high selenium area in China. Selenium resources in Enshi City are characterized by wide distribution, large reserves and shallow burial.

Selenium deposits mainly occur in the second member of Permian Maokou Formation (siliceous rock section), mainly distributed in Mufu-Banqiao, Luozhentian-Mazhe-Tiechangba, Xiangjiacun-Qiyangba, Zhonghe-Huangcun-Shahuagai, Shuanghe-Hongtuxi-Shi Yao, Bajiao Township-Shengjia and other places. The reserve of selenium ore is more than 5 billion tons, and the selenium grade is 230-6300 g/ton. Shuanghe Yutangba (southwest section of Shuanghe syncline between Qianping anticline and Taishanmiao anticline) has the only independent selenium deposit in the world, with proven reserves of 640,000 tons and average pure selenium content of 3637.5ppm, rewriting the traditional conclusion that selenium cannot form an independent industrial deposit. The exposed area of selenium-containing carbonaceous shale and stone coal in the city is 850 square kilometers, the thickness of coal seam is 3.6-9 meters, and the reserve of selenium ore is more than 5 billion tons, each ton contains 500-5,500 grams of selenium, with a maximum of 84 kilograms. The highest selenium in soil is 178.8ppm, with an average of19.1kloc. Villages and towns centered on selenium deposits are all high selenium areas, accounting for 73% of the city's total area.

However, the human body's ability to store selenium is very weak, so it is necessary to eat foods with high selenium content frequently in life to get enough selenium. Can supplement malt selenium, protein selenium, selenium Weikang, etc.