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1、河南農(nóng)業(yè)大學(xué)碩士學(xué)位論文玉米養(yǎng)分管理決策支持系統(tǒng)研究姓名：魏俊凱申請學(xué)位級別：碩士專業(yè)：作物栽培學(xué)與耕作學(xué)指導(dǎo)教師：鄭國清;馬新明20090601StudyonDecisionSupportSystemforMaizeNutrientManagementSuperV?1sedbpr0ryfessorzhengGuoqingprofe:ss0rMaXinm?1MansgterCand?1date:WeiJunkaiABSTRACTTheimp1ementationofvariablerateferti1izerapp1icatorforpreci
2、sionagriculturetechnologyisoneoftheimportantcontents,arguingthatundcrthesma11?scaleFieldbetweenthedifferencesinsoi1ferti1ityandcropgrowth,subjecttodifferentamountsofferti1izer,whichcanreducetheuseofferti1izertimprovingtheuLi1izalionofferli1izers,andfromthereducetheovera11non
3、—poinlsourcepollulion.ALbased0n0utput0rrem0tesens?ngdatabutthe1?m?tat?0ns0fthesystem()rdUet()theh?1ghPr?1CcS0raPP1?1cdL0Lhcpr0ducL?10n0fsma11?In20072009?1nwenC0untyagr?1cu1tura1bas?1s0fthetest,bu?11dam0dc10fVarab1eratefert1zat0n0ft0mandntr0gen9ph0sPh0rbsandp0tassumstresstest
4、onthe$ystcm,resu1tsshO'JVthat??present,variablerateferti1izationresearchfocusedonsoi1ferti1ityandobjectives1environmentinWenFiaccurSimulaferencIheacLiffererst1y,Basedontheecologicaunty,in.theN,P.K..fu...,Juappropriateconditions,growthstageandyieldhigheracyofsimulattionofebeI
5、weua1obsion,eofthcwholcgrowthpcriodwiththconlydif1?2d?jointingstagcandhcadingphasedneebetweenthelrweightofthsimulatedoefficienspec1y,for3—6dand0?4d,LAI,drymatteeandmeasuredtreachedO.9luesmatch.thecorrelationc8—0.9876；outputanalogvalueabetween5?5?va00ndthemeasuredva1ueofthedi
6、fference50.6kg/acre?However,nilrogenstressconditions,simu1ationsignificanterror.Second1y9Inaccordancewiththeprincipleofnutrientbalanceand^crop—soi1?environment—technologynprinciple,buildamodelofvariablerateferti1izatcom,includingcornbeforeionofsowingnitrogen,phosphorusandpot
7、assiumferti1izerandsowingthetotalaftertheamountofnitrogentopdressingaccurate.Thespatialinformationtechnologytothesoi1dataandthevolumeoftomtobefatanderminethevarietiesame.Thisredreproductivestagescombinedleaisedcropfaclor,theinitialvalueoftheferti1farca,throughthczerberevicad
8、stotherevrdertodet0ffert?11?zeraPP1?1cat?10nmethod0fthewasteandthep011ut?10
