氮磷添加对喀斯特地区山地土壤钾元素的影响

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关键词喀斯特；氮磷添加；钾元素；植被修复中图分类号X171.4文献标识码A文章编号 0517-6611（2026）02-0138-06doi：10.3969/j.issn.0517-6611.2026.02.024

AbstractThisstudyfocusedontheplateaumountainregionofSouthwestChina’sarstrea.Combiningindorpotexperimentswithtructuralequatinmodelng（E）alydeteacisofmetaldodgeatoolpassoentTl onstratedat：itrogenadditonsignificantlyeducedotalpotassu（TK）contentinthewormodandmiedtreamentgroups，hilete Chinesepenisetumgroupshowedaslightincrease.Phosphorusaditioncausednosinfcantfuctuatios，butcombinednitrognadpos phorustreatmentfurtesifedteecreasigendofT.Alltreamentssignifantlyireasdvailbleotassu（AK）coti combinednitrogenandposphorusaditiontrigeringasignificanticeaseinAKalogsidecreasedTK.Asignificantngativeelo existed between TKandAK，andAKexhibited inhibitory eectsonnitratenitrogenandreadilyoxidizableorganiccarbon.

Key WordsKarst;Nitrogen and phosphorus addition;Potassum element; Vegetation restoration

喀斯特地区的显著特点之一是其复杂的地质条件。（剩余8720字）