Page 219 - 《水资源与水工程学报》2023年第3期
P. 219
!34 " ! 3 # & ' ( ) & * + , - Vol.34No.3
2023 $ 6 % JournalofWaterResources&WaterEngineering Jun.,2023
DOI:10.11705/j.issn.1672-643X.2023.03.27
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ABCDE:TV93;S275 FGHIJ:A FKLE:1672643X(2023)03021510
Simulationmethodofdistributionandtransferofmaizephotosynthate
1
3
1
2
1
SHIQingqing,LIYan,WANGYangren,LIJinyu,GONGLili
(1.CollegeofWaterConservancyEngineering,TianjinAgriculturalUniversity,Tianjin300392,China;2.Scientific
ResearchServiceCenter ,ShanxiFenheIrrigationManagementCo.,Ltd.,Taiyuan030006,China;
3.LüliangWenyuRiverWaterConservancyServiceCenter,Lüliang033000,China)
Abstract:Thesimulationofphotosyntheticproductdistributionandtransferisanimportantpartofcrop
growthsimulation.Basedontheirrigationexperimentdata (highwatertreatmentT1andzerowatertreat
mentT2)ofspringmaizeofthreeyears(2018,2019and2020)atWenyuheExperimentalStationin
ShanxiProvince ,thedistributionmethodsofphotosyntheticproducts(distributioncoefficientmethodand
distributionindexmethod)wereadoptedforthesimulationstudy.Theresultsshowedthatthesimulated
2
andmeasured R valuesofstem,leafandspikeofthetwomethodswereallabove0.9intermsoffitting
2
accuracy ,andthesimulatedprecisionofspikewasthehighest(R wasabove0.95).Waterstress
coulddecreasethestemdistributionindex ,increasetheleafandspikedistributionindex,andithadthe
greatestinfluenceonthespikedistributionindex.Waterstressmainlyinfluencesthedistributioncoeffi
cientbyaffectingthegrowthcorrelationindices (stem-leafratio,spike-stemratioandroot-shootrati
o).Itwasfoundthatthesimulationeffectofspike-stemratiowasthebest(thesimulatedvalueandthe
2
measuredvalueof R were0.882),thewaterstressindexofstem-leafratiowas-0.130,whichindi
catedthatthewaterstresswouldleadtothedecreaseofstem-leafratio.Thewaterstressindexesof
spike-stemratioandroot-shootratiowere0.248and0.143 ,indicatingthatwaterstresscouldincrease
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