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近年研究结果表明，全省耕作土壤中各种形态钾含量的变幅是旱地大于水田，全钾含量是水田高于旱地，而缓效钾和速效钾含量是旱地高于水田。由于耕作土壤各种形态钾素含量都有不同程度的下降，所以各种作物当季施钾效果和钾肥后效逐步明显，钾肥与一些微量元素配施亦表现出明显的增产效果。钾肥区划中全省共分为７个一级区和１８个二级区（亚区），并对各区进行了概述。
In recent years, the results show that the tillage in the province of various forms of potassium content of the amplitude of dry land is larger than paddy fields, potassium is paddy field is higher than dry land, and slow-available potassium and available potassium in dry land is higher than paddy fields. Due to the various forms of potassium content in cultivated soils have decreased in varying degrees, so a variety of crop seasonal potassium application efficiency and potassium fertilizer gradually obvious, potassium and some trace elements also showed significant stimulation effect. Potash divisions in the province is divided into 7 first-level area and 18 second-level area (sub-area), and the district were outlined.