The salt in Qinghai Salt Lake is Daqing salt. Daqingyan is famous for its excellent quality and pure taste, and enjoys a high reputation among the people. Influenced by geographical remoteness, market and other factors, the famous tea card salt is still bred in an inner room, and no one knows about it. In the future, Daqing salt will get rid of the relative backwardness of varieties, brands, packaging and sales, and salt lake is an important tourism resource and medical sludge resource.

Chaka Salt Lake is located in the east of Qaidam, Qinghai, with an altitude of 3 100 meters, which belongs to the pollution-free area of Qinghai-Tibet Plateau. Chaka Salt Lake, known as the mirror of the sky, has become a trump card scenic spot in Qinghai Province. According to "Hanshu Geography", it was mined as early as 3000 years ago. Tea card salt is also recorded as dual-purpose medicine and food in Compendium of Materia Medica and Dream of Red Mansions because it contains many trace elements. According to historical records, since the 28th year of Qianlong, Chaka Salt Lake has been exploited on a large scale. 1908, Tangar Hall Salt Bureau was established.

Formation of salt lake

Salt lake is a kind of salinized water body, which usually refers to lakes with salinity greater than the average salinity of seawater, and also includes dry salt lakes with dry surface brine and composed of salt sediments and intergranular brine. There are about 200 kinds of salt minerals deposited in salt lakes. Humans have exploited a large number of important raw materials such as salt, alkali, mirabilite, potassium, lithium, magnesium, boron, bromine, mirabilite, gypsum, medical sludge and so on from the salt lake, such as basic chemical industry, agriculture, light industry, metallurgy, construction, medical treatment and so on.

There are also rubidium, cesium, tungsten, strontium, uranium, calcium chloride, magnesite, zeolite, hectorite and other resources with industrial significance in the salt lake. There are also a large number of special biological resources with important economic value and scientific significance, such as halophilic algae, Artemia, Spirulina, rotifer, etc., as well as drought-tolerant and saline-alkali-tolerant genetic resources, which provide human beings with simple materials, natural edible pigments, energy, various industrial scientific materials and purify the environment, opening up a good prospect of turning salt lakes into "fertile soil".

The above contents refer to Baidu Encyclopedia-Salt Lake.