Page 212 - 《水资源与水工程学报》2025年第1期
P. 212
!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:1672643X(2025)01020806
Soildensityaffectswaterinfiltrationandyieldofdripirrigated
maizeunderfilm mulching
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3
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SHIWanen ,ZHANGYuezhen ,ZHAOQiang ,TIANRongrong
(1.WuweiWaterScienceandTechnologyPromotionCenterinGansuProvince,Wuwei733000,China;2.WuweiKeyIrrigation
ExperimentalStationinGansuProvince ,Wuwei733000,China;3.NorthwestA&FUniversity,Yangling712100,China)
Abstract:Toinvestigatetheeffectofsoildensityonsoilwaterinfiltrationandyieldofdripirrigatedmaizeunder
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
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3
crease ;whileEuclideandistancedecreasefirstandthenincrease.Whenthesoildensityis1.564g/cm,the
wettedbody C reachesthehighest(93.7%),theEuclideandistancebecometheshortest(0.09),andthe
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3
2
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maizeyield ,WUEandIWUEallreachesthehighest(13,796.68kg/hm,2.98kg/m and4.50kg/m).The
resultsofthisstudycanprovideastrongtechnicalsupportfortheresearchonimprovingtheapplicationeffective
nessofmaizedripirrigationunderfilm ,andapracticalguidanceforthedesignofthedripirrigationprojectof
highstandardfarmlandconstructioninShiyangRiverBasin.
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