1　研究目的我国国产钾肥年生产能力在25万～30万t,主要产于青海盐湖。由于产品进入市场较晚,又缺乏试验、示范的宣传,农民对它缺乏认识。为了发展民族工业,推动国产钾肥的发展,验证国产钾肥的增产效果,比较青海钾肥与进口钾肥之间的差异,探索青海钾肥的有效施用途径,从1993年? 1 Research purposes China’s annual production capacity of potash in 250,000 ~ 300,000 t, mainly produced in Qinghai Salt Lake. As the product into the market late, but also the lack of tests, demonstration of publicity, farmers lack of awareness of it. In order to develop the national industry, promote the development of domestic potash fertilizer, verify the yield increase of domestic potash fertilizer, compare the difference between the potassium potash fertilizer and the imported potash fertilizer in Qinghai Province, and explore the effective application route of the Qinghai potash fertilizer from 1993?