炭基有机无机复混肥减钾施用对植烟土壤水溶性有机物及钾有效性的影响

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关键词：炭基有机无机复混肥；减钾；植烟土壤；水溶性有机物；钾有效性

中图分类号：S143.6；S153 文献标识码：A

文章编号：0439-8114（2026）02-0027-09

DOI：10.14088/j.cnki.issn0439-8114.2026.02.005 开放科学（资源服务）标识码（OSID）：

Effects of potassium-reduced application of biochar-based organic-inorganic compound fertilizer on dissolved organic matter and potassium availability in tobacco-planting soil

DIAOHan-qian1，TIANWei-qiang²，ZHANG Xiao-tao²，LUHui-jun²，ZHANG Min1，QI Yong-bo （1.CollegeofResourcesadEviroent，AnuAgriculturalUiversityHefeio6ina;.ZunrahfuzoubacCa Zunyi 563000，Guizhou，China）

Abstract：Inordertoexploretheefectsofpotassiu-reducedaplcationofbiochar-basedorganic-organicompoundfertlizer （BOCF）ondissolvedorganc matter（DOM）characteristicsand potassumavailabilityintobacco-plantingsoils，potexperiments wereconductedusing twotobacc-plantingsoil tpes（paddysoilanduplandyelowsoil）.Fourtreatmentsweresetup，ncludingconventional organic-inorganic compound fertilizer（CK），BOCF with equivalent nutrients（T1），BOCF with a 10% K2O reduction （T2），and BOCF with a 15% K2O reduction （T3）.At the maturity stage of flue-cured tobacco，the physicochemical properties，the DOMspectroscopiccharacteristics，andthepotassumfractionationofthesoilwereanalyzed.Theresultsshowedthatthersposeof soilpotassiumavailabilitytopotassmreductnvaridwithsoiltype.Inpaddysoil，tewatersoublepotasium（WSK）cotentof T1，T2 and T3 was significantly reduced by 24.7% ， 34.5% and 40.3% respectively，compared with CK. The non-exchangeable potassium（NEK）contentofT1，T2and T3 was lowerthan that ofCK，with the T3 showing a significant decrease of 40.4% . The content of variousformsofpotassiuminyellowsoilwasrelatielystable，andtherewasnosignificantdiferene.EachBOCFtreatmentanced theacumulationofhumic-likesubstancesandthehumfcationdegeinDOMofbothpaddyandyellowsoils.Corelationandredundancyanalyses indicatedthatchangesinthechemicalpropertiesofDOMinbthsoilspartiallyregulatedsoilptassumsupplyTherefore，theutilzationofpotasseductiothqesihioabasedganicorganicompoundfertilierproedteoevi able inyllowsoilformaintainingpotassumstability，butledtotheconsumptionoftenonexchangeablepotassumpolipaddy soil.

Keywords：biochar-basedorganic-inorganiccompoudfertilizereductionofpotassum；tobaccoplantingsoil；disoedganic matter；potassium availability

钾对烤烟生长发育和烟叶品质至关重要[1]。（剩余14926字）