凹凸棒石土壤改良剂对玉米产量及土壤的影响

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关键词：土地盐碱化；土壤改良剂；土壤理化性质；玉米；产量

中图分类号：S156.2；S513 文献标志码：A 文章编号：2097-2172（2025）09-0878-05

doi：10.3969/j.issn.2097-2172.2025.09.017

Effects of Attapulgite Soil Amendment on Maize Yield and SoilImprovement

ZHAI Yajiao，MAO Senyu，DING Mingyuan （LinzeAgricultural TechnologyExtension Centre，LinzeGansu 7342OO， China）

Abstract： To explore efective measures for improving saline-alkali soil with atapulgite amendment，acontinuous 3-year analysiswasconductedfrom2022to2024toevaluatetheefectsofapplyingatapulgitesoilamendmentat40kg/hacombinedwith farmyardmanureat5Ot/ha，aswellasapplyingatapulgitesoilamendmentaloneat4Okg/ha，onmaizeyieldandsoil physicochemical properties.Resultsshowedthatthecombined treatmentofatapulgitesoilamendmentandfarmyardmanure performedbestinimprovingmaizeagronomictraits.Comparedwithconventionalfertilization，the3-yearaverageplantheightand stem diameter increased by 8.57% and 56.59% ，respectively，while bald ear length was significantly reduced and the number of kernelsperearincreased.Theyield-increasingefectwasmarkedlybeterthanothertreatments，witha3-yearaverageyield increase of 18.45% compared to thecontrol of conventional fertilization.Regarding soil improvement，applicationof soilamendment significantlyenhancedsoilqualitySoilmoisturevailablentrogen，totalphosphorus，availablephosphorus，totalpotassiu，an available potassium contents were all highest in the combined treatment， with 3-year average increases of 4.90% ，12.59 % ， 25.00% 46.88% ， 25.43% and 35.78% compared with conventional fertilization，among which available phosphorus content increased most significantly.Meanwhile，soil pH waseffectivelyreducedby 8.70% to 14.67% .Correlation analysisrevealed that maizeyield was significantlypositivelycorelatedwithsoilpsicochemicalproperesadsignificantlynegativelycorelatedwithsoilpHWiththe improvementofsoilqualitythenumberofsoilmicroorganismsalsoshowedanbviousupwardtrend.Inconclusion，aplicatinof soilamendmentnotonlyefectivelyhncedmaizeyieldbutalsosignifcantlyimprovedsoilpysicochemicalproperties，withthe combined treatment of attapulgite soil amendment at 40kg/ha and farmyard manure at 5O t/ha being particularly effective，providing theoretical reference for the improvement of saline-alkali land.

KeyWords：Soil saline-alkalization; Soil Amendment; Soil physicochemical property; Maize; Yield

土壤作为人类赖以生存的物质基础，在作物 生长、生态调节等方面具有重要作用[1]。（剩余6660字）