速效钾，是指土壤中易被作物吸收利用的钾素。包括土壤溶液钾及土壤交换性钾。速效钾占土壤全钾量的0.1%〜2%。其中土壤溶液钾占速效钾的1%〜2%，由于其所占比例很低，常将其计入交换钾。速效钾含量是表征土壤钾素供应状况的重要指标之一。
Rain intensity has more effect on the loss of soil, slowly available K, and rapidly available K than slope gradient.
雨强比坡度对土壤、缓效钾和速效钾的流失影响更大。
参考来源 - 黄土区土壤钾素径流流失规律研究The nutrient content in forest soil was improved clearly, the content of available phosphorus and effective potassium had significant difference among treatments, also soil organic matters increased evidently.3.
林下土壤中养分含量在施肥后也有明显的提高,特别是速效钾、速效磷在处理间差异显著,土壤有机质也有明显的提高。
参考来源 - 修剪施肥对油茶生长结实特性影响研究·2,447,543篇论文数据，部分数据来源于NoteExpress
速效钾含量处于中下水平的生产单位占77.3%；
Rapidly available potassium contents in 77.3 % production units were middle.
结果表明：土壤速效钾含量随沸石施用量的增加而增加；
The results showed that the content of available potassium in soil increased with clinoptilolite application increase.
土壤中的有机质、碱解氮、速效磷、速效钾的含量均比对照增加。
And it could improve the contents of organic matter, alkali - hydrolyzable nitrogen, available phosphorus and potassium in soil.
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