Page 212 - 《水资源与水工程学报》2025年第1期
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!36 "!1 #                         & ' ( ) & * + , -                               Vol.36No.1
               2025 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2025

            DOI:10.11705/j.issn.1672-643X.2025.01.23


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               KLMNO:S275.6;S513   PQRST:A    PUVO:1672643X(2025)01020806
                      Soildensityaffectswaterinfiltrationandyieldofdripirrigated
                                            maizeunderfilm mulching

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                            SHIWanen ,ZHANGYuezhen ,ZHAOQiang ,TIANRongrong
               (1.WuweiWaterScienceandTechnologyPromotionCenterinGansuProvince,Wuwei733000,China;2.WuweiKeyIrrigation
                 ExperimentalStationinGansuProvince ,Wuwei733000,China;3.NorthwestA&FUniversity,Yangling712100,China)
               Abstract:Toinvestigatetheeffectofsoildensityonsoilwaterinfiltrationandyieldofdripirrigatedmaizeunder
               filmmulching,fieldexperimentswerecarriedout.Theeffectsofthreesoildensitiesonthesoilmassundertwo
               pointsourceinfiltrationwereanalyzedfromaspectsofwettedbodyshape ,wettedbodyvolume,spatialsoilmois
               turecontent ,maizeyield,wateruseefficiency(WUE)andirrigationwateruseefficiency(IWUE).Theresults
               showthatsoildensityisthemainfactoraffectingsoilmoisturechangeandmaizeyieldwhenotherconditions ,
               suchasdripirrigationflowandirrigationtimearegiven.Withtheincreaseofsoildensity,thehorizontaldiffu
               siondistance,thevolumeofwettedbodyandtheareaofintersectioninterfaceallincrease;whereasthevertical
               infiltrationdistanceandtheaveragemoisturecontentofsoilattheintersectioninterfacealldecrease.Meanwhile,
               soilwaterdistributionuniformitycoefficient(C),maizeyield,WUEandIWUEallincreasefirstandthende
                                                     u
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               crease ;whileEuclideandistancedecreasefirstandthenincrease.Whenthesoildensityis1.564g/cm,the
               wettedbody C reachesthehighest(93.7%),theEuclideandistancebecometheshortest(0.09),andthe
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               maizeyield ,WUEandIWUEallreachesthehighest(13,796.68kg/hm,2.98kg/m and4.50kg/m).The
               resultsofthisstudycanprovideastrongtechnicalsupportfortheresearchonimprovingtheapplicationeffective
               nessofmaizedripirrigationunderfilm ,andapracticalguidanceforthedesignofthedripirrigationprojectof
               highstandardfarmlandconstructioninShiyangRiverBasin.

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