基于实时作物灌溉预报的灌区水资源优化配置

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1、华北水利水电大学硕士学位论文II万方数据ABSTRACTBASEDONREAL-TIMEIRRIGATIONFORECASTOFWATERRESOURCESOPTIMALALLOCATIONINIRRIGATIONAREAABSTRACTThetraditionaloptimalallocationofwaterresources,whichisonthepremiseofforecastingalongseriesofwaterprocesstodetermineitstypicalyearandbasedonpre-determinedp

2、lansforwaterresourcesschedulingintheirrigationarea,ignoresthedifferencesbetweenthereal-timeinformationliketherapidlychangingofweather,realconditionsofcropgrowthandsoilenvironmentandhistoricaldata.Itaffectsthecropwaterrequirementforecastandoptimizedallocationofwaterresources

3、intheirrigationarea,andconfinestheenhancingofirrigationwaterresourcesutilizationandthedevelopmentofmodernizationofirrigationdistrict.Inviewoftheaboveproblemsthatexistingintherelevantfieldofdomesticandforeignirrigationforecastandtheirrigationsystemoptimizationresearch.Dailyr

4、eferencecropsevapotranspirationforecastmodelreal-timeirrigationforecastmodel,basedonthevariablefuzzyclusteriterationmodel,wasestablishedinthispaper.Determinetheclusteringcentersofthereferencecropsevapotranspirationthatunderthefourtypesofweatherjustlikesunnycloudyovercastand

5、rain,thenwecanforecasttheshort-termdailyreferencecropsevapotranspiration.Atthesametime,onthebasisofsoilwaterbalanceprinciple,throughthecomparisonofwinterwheatdailysimulatedvaluesandthemeasuredsoilmoisturecontenttodeterminereal-timecorrectionmethodofthecropcoefficient.Basedo

6、nthedailyreferencecropevapotranspirationpredictionmodelandwinterwheatmoisturedailyrecurrenceformula,real-timeirrigationforecastmodelisestablishedinthispaper.Makingagriculture,meteorologicalreal-timedataasinputsolvestheproblemthattraditionalirrigationforecastcan’tmakefulluse

7、ofrainwaterresourcesanditimprovestheutilizationefficiencyofwaterresourcesintheirrigationarea.Deficientirrigationexperimentofwinterwheatwascarriedoutastheexampleandtestresultsandproductionanalysisshowthatreal-timeirrigationIII万方数据华北水利水电大学硕士学位论文forecastmodelandtechnologycanin

8、creasetherateofwatersavingandeconomicbenefitofirrigationarea,andtheycanalsoacceler