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!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:1672643X(2023)03021510

                  Simulationmethodofdistributionandtransferofmaizephotosynthate

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                                                                                           3
                                         1
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                                                                    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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