Potassium salts, are naturally occurring potassium-bearing minerals. These include potash rock, potash magnesium alum, carnallite, magnesium sulfate rock, and potassium chloride. Potash is generally soluble and has a high degree of purity.

Potash mines are found on the surface of the earth's crust or in the brines of lakes and oceans that are about to dry up, and the most important potash mines are found in Germany, Russia, Canada, Italy, France, Spain, and the United States. Ninety-five percent of the world's potash products are used as fertilizers and 5 percent are used in industry.

CausesOrigin:

An evaporated sedimentary mineral, deposited from salt-bearing solutions, and thus commonly found in dry salt lakes, where it is associated with rock salt, gypsum, miscellaneous halloysite, halloysite, and hard gypsum***.

The world is rich in potash resources, rich reserves of countries such as Canada, Kazakhstan, Poland, Iran, Russia, etc., China's main source of potash salt in Qinghai Qaidam Modern Salt Lake, Xinjiang Lop Nor Modern Salt Lake and Yunnan Menghuojing solid potash mine.

Potassium fertilizer is one of the three major fertilizers in agriculture, which has obvious yield increasing effect on the majority of crops. Potassium fertilizer is mainly potassium chloride and potassium sulfate, which are acidic fertilizers. Potassium chloride is used in large quantities, suitable for rice, wheat, corn, cotton and other crops, chlorine is not harmful to them; potassium sulfate is suitable for hemp, tobacco, sugarcane, grapes, sugar beet, tea and other cash crops.

The above references? Baidu Encyclopedia-Potassium salts