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钾是作物生长所必需的营养元素之一，具有提高抗逆性、促早熟等作用。近年随着生产水平的提高，钾肥在增产中的作用越发明显。为进一步弄清东部地区土壤的供钾能力及施钾效果，本文通过对已有资料的整理，运用统计方法对东部地区土壤钾的分布等特性进行了研究，弄清了全钾在土壤中的分布特点及其与母质等因素的关系，并通过田间试验，初步明确了灰棕壤上种植玉米的施钾效果。
Potassium is one of the nutrients needed for crop growth, with the role of improving stress resistance and promoting early maturity. In recent years, with the improvement of production level, the role of potash fertilizer in increasing production becomes more and more obvious. In order to further clarify the potassium supply ability and the effect of K application in soils of eastern China, this paper studied the distribution characteristics of potassium in soils in eastern China by using the existing data, Distribution characteristics and its relationship with the parent material and other factors, and through field experiments, initially clarified the potassium-planting effect of corn on gray-brown soil.