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1、DECLARATIONTheauthordeclaresthatthisworkwascarriedoutbyhimselfundertheguidanceandsupervisionofDrJinhongChenoftheDepartmentofAgronomy,collegeofAgricultureandBiotechnology,ZhejiangUniversity,Hangzhou,PeoplesRepublicofChinaandthatthasnotbeensubmittedbyanypersonforadegreeinanyotheruniversit
2、yAuthour:M.AJallohSign.Supervisor:JinhongChen(Ph.D)Sign.滬甘炒CERTIFICATIONIcertifythattheresearchreportentitledTheeffectofNitrogenfertilizerformsongrowth,yieldandgrainqualityinrice(OryzasativaL.)SubmittedbyMohamedA.JallohforthedegreeofMasterinAgronomy,specializinginCropScienceisbasedonres
3、ultsofstudiescarriedoutintheAgronomyDepartment,ZhejiangUniversity,Hangzhou,PeoplesRepublicofChina.ThereportorpartofithasnotbeenpreviouslysubmittedforadegreetoanyotheruniversitySupervisor:JinhongChen(Ph.D)SignIIACKNOWLEDGEMENTInthenameofAllahinwhosepowerandgracethispieceofworkgottoitssuc
4、cessfulend,Idowishtoregistermysincerestthanksandappreciationtothemanyorganizations,groupsandindividualswhocontributedinonewayortheothertomysuccessfulstayandstudyinchina.IamverygratefultothegovernmentsoftheRepublicofSierraLeoneandthePeople’sRepublicofchinathroughwhosediplomaticandfratema
5、lrelationshipbroughttothefulfillmentofmyacademicdreams,hopesandaspirations.ThismaynothavebeenpossiblewithoutthespaceandconduciveatmosphereprovidedbytheadministrationoftheZhejiangUniversity,theDivisionofForeignStudents,theDivisionofGraduateStudiesandtheentirestaffoftheDepartmentofAgronom
6、y,towhomIremainindebted.MysincerestthankstoDr.JinhongChenunderwhosevaluableguidanceandsupervisionthisworkwasdone.IamalsogratefultotherestoftheteachingandsupervisoryboardwithspecialreferencetoProf.GuopingZhang.ThesamethankstoDrFeiboWu,ProfessorWeijunZhou,Dr.JinxinChen,DrRenmingWang.Manyt
7、hankstomycolleaguesintheforeignstudentsbuildingwhosecompanymademystayahappyone.1wishtomakementionofthefriendlinessofmyChinesefriends,WuChunhua,ChenFeiandotherswhoinonewayoranotherhelpedmeduringmycauseofstudies.Iamgratefultomycountrymatesstudyingindifferentcitiesinchinawhowereal