钾元素是生命之必需元素,是粮食及农作物生长的大量“营养素”之一。六十年前,中国还没有发现钾盐矿床。农民多用草木灰来补充农田对钾的需求。如今,中国钾肥年产量数百万吨,自给率达到50%。这些钾盐主要从盐湖卤水中提取,而己探明的盐湖钾盐储量有限,难以支撑中国农业可持续发展。世界上钾肥主要从古代固体钾盐矿石中制取,已查明地球古生代海相固 Potassium is an essential element of life and is one of a large number of ’nutrients’ that grow in food and crops. Sixty years ago, China did not find potash deposits. Farmers use ash more to supplement the farmland’s demand for potassium. Today, China’s annual output of potash is several million tons and its self-sufficiency rate reaches 50%. These potassium salts are mainly extracted from salt lake brines, and the limited salt reserves have proved to be limited, which is difficult to sustain the sustainable development of agriculture in China. The world’s potash is mainly from the ancient solid potassium salt ore, has identified the Earth’s Paleozoic marine solid