钾是棉花的主要营养元素。棉花对钾素反应敏感,当土壤中缺钾时,在苗期和蕾期,棉株中下部叶片呈现缺绿,叶缘下卷,到后期易引起红叶茎枯病。从而影响棉花产量及纤维品质。国内已有不少关于施钾肥增产的报道。本文根据砂培盆栽试验结果,分析了钾肥对棉花种子质量的作用。 Potassium is the main nutrient of cotton. Cotton is sensitive to potassium, and when potassium is deficient in the soil, the leaves in middle and lower leaves of cotton plants appear green and leaf margin at the seedling and bud stage, and easily lead to stem blight of red leaves in later stage. Thus affecting cotton yield and fiber quality. There have been many reports on the yield increase of potash fertilizer in China. Based on the results of pot culture experiment, the effect of potash fertilizer on cotton seed quality was analyzed.