简介：Inthispaper,aimingattheproblemsofinsufficientsoilnutrientsandhighsaltcontentinWudicoredemonstrationareaofBohaiGranary,amonitoringandmanagementsystemofwater,fertilizerandsaltinsaline-alkalinefarmlandbasedonWebGISwasestablishedinordertomonitorandcontrolwater,fertilizerandsalt.BasedontheWindows.NETplatform,usingB/SmodeofoperationarchitectureandVisualStudio2010asthesoftwaredevelopmentenvironment,therelatedcomponentsinArcGISEnginewereinvokedbyArcGISAPIforSilverlirht,andtheWEBsystemwasdevelopedbyC#andXMALlanguage.Basedontheprincipleofwater,fertilizerandsaltbalance,amonitoringmodelandaregulationmodelforwater,saltandnutrientswereestablished.Intelligentanalysisandapplicationoffarmlandsoildatawererealized,andaprecisionagriculturesystemwithdataquery,earlywarningdiagnosis,monitoringandcontrolofwater,fertilizerandsaltwasformed.Andthe'waterandsalthomologue,watersupplyduetodemand,adequateandmultiple'irrigationschemeandthesaltandalkalireductionschemeof'synergisticconditioningofagentsandnutrients'andanutrientregulationplanfor'stabilizingnitrogen,increasingphosphorus,supplementingpotassiumatthediscretion'and'quick-actingcombiningslowrelease'wereputforward.Comparedwiththeperiodwithoutmonitoringandcontrolofwaterandsalt,theeffectofwatersavingandfertilizersavingwasimproved,andtheyieldofwheatandmaizewasalsosignificantlyincreased.Itprovidedguidanceforlocaluserstoincreasecropproductionandincome,andgreatlyimprovedtheutilizationofresourcesandgrainproduction.