保护性耕作对吉林省农田土壤有机碳含量和储量的影响

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关键词：农田土壤；保护性耕作；土壤有机碳；碳储量；Meta分析中图分类号：S153.6 文献标志码：A 文章编号：1672-2043（2025）10-2517-11 doi：10.11654/jaes.2024-1039

Abstract：Toexplorethemechanismsanddrivingfactorsunderlyingtheefectsofconservationtillageonsoilorganiccarbon（SOC）in farmlandsoilsinJilnProvince，thissudyplodaMetaaalysisetdtoquantitatielyivestigatetefectsofonseatiole onSOCcontetdockiJilnveadsellasthefuinctos.esulsofdyowttdih traditional tillage，conservation tillage significantly increased SOC content and stock （ P<0.05 ），but the effectiveness decreased with increasingsoildepth.TheamountofcropresidueretentionwastheprimaryinfluencingfactorforthepromotionofSOCcontentandstock underconservationtilage.Astheamountofcropresidueretentionincreases，thepositiveeffctsonSOCcontentandstock were significantly enhanced（ P<0.05 ）.Conservation tillage at diffrent cultivation periods significantly increased SOC content and stock，with themostpronouncedefectsobservedwhenthecultivationperiod≥1Oyears.TheoptimalSOCcontentandstock wereachieved when nitrogen application was in the range of ⩽100kg⋅hm-2 ，phosphorus application was ⩾ 100 kg·hm-2， and potassium application was > 80 kg ： （20 hm-2 .Inconclusion，theimplementationofconservationtilgecansignificantlyenancethecarbonsequestrationcapacityoffrmlndsoils in JilinProvince，providing critical support for regional agricultural sustainable development. Keywords：farmland soil; conservation tillage; soil organiccarbon; carbon stock;Meta-analysis

土壤是陆地生态系统中最大的有机碳储存库，其有机碳储量约为大气碳库的3倍[-2。（剩余19889字）