大慶地區(qū)重度鹽漬化土壤改良的研究.pdf

1、UniversityCode：10225RegisterCode：080420DissertationfortheDegreeofMasterStudVon1morovementotheavilysalineS0111nd』1‘^‘1o’1。DaqingCandidate：YangHairuSupervisor：GongWeiguangAcademicDegreeAppliedfor：MasterSpeciality：DateofOra

2、lExamination：University：SoilandWaterConservationandDesertificationCombatingJune，2008NortheastForestryUniversity東北林業(yè)大學(xué)碩士學(xué)位論文AbstractSaline。alkalisoilisoneofwidedistributingsoils，theareaofwhichisabout25％ofthewholelandareaa

3、llovertheworldAtpresent，howtoamendandusesalinealkalisoilwasbecomingafocusofresearchesInthestudyanOrthogonalDesignwiththere3levels，including8treatments，wastakentotesteffectsoftreatmentsofdifferentamendments，gypsum，flyasha

4、ndfurfuralresidues，onphysicalandchemicalpropertiesofsaline—sodicsoilinDaqingoftheSongnenPlainTheresultsindicatedthatthephysicalandchemicalpropertiesofthesaline—alkalisoilwereimprovedSoilbulkdensitywasreduced，andosmosissp

5、eedwaspromoted，pHandcontentsofNa，C1’，HC03werereduced，whilethecontentsofS042‘、Ca2、M92wereincreased，becauseoftheapplicationofamendments，gYPsum，flyashandfurfuralresiduesinthesalinealkalisoil1Eightkindsoftreatmentscanimprove

6、soilphysicalpropertiesSoilbulkdensitydecreased，soilporosity，permeabilitycoefficientandfieldcapacityincreasedunderthetreatmentsAmendmentCisthebest，andiisthesecond2Ithasthebesteffectonsoilphysiclcharacterwithitscomposebyfl

7、yash20kg‘m。zandfurfuralresidues3kg‘m2“Contrasttothecomparison，soilbulkdensitydecreasedby0259‘cm‘’，soilporosityincreasedby753％，permeabilitycoefficientincreasedby792％，fieldcapacityincreasedbyO。22mm／min3Eightkindsoftreatmen

8、tsareabletoincreasethecontentofsoilnutrientAvailableN、P、Kincreased，soilpHreducedThefouramendmentsCancutdownthecontentofdissolvingsaltinsoilInthewholedissolvingioncomponentbymeasuring，t11econtentofHC03“Na，C1。andMg”decreas

9、ed，thecontentofS042。andCa2wentupwithincreasingofusingamount4IthasthebesteffectonsoilchemicalcharacterwithitscomposebygYPsum3kg‘m～，flyash20kg。m～andfurfuralresidues15kg。m2“Contrasttothecomparison，effectualphosphorusincreas

10、edby1851mg／kg，thesoilpHdecreasedby089，hydrolyte—saltwasreduced0054％，thecontentofNareducedby044mgper1009soil5EightkindsofsoiltreatmentsCanimprovethegrassgrowthdegreetreatmentsiwithitscomposebygypsum3kg。m。，flyash20kg。m‘a(chǎn)nd

11、furfuralresidues15kg‘m。zcanremarkablyincreasegrassbiomass，andtreatmentsgwithitscomposebygypsum3kgm。2andfurfuralresidues3kgm～followedTheresualtsoftwoamendmentshavenoobviousestdifferentKeywords：amendments；salinealkalisoil；