三種緩釋肥料的制備及其緩釋性能的研究.pdf

1、華中農(nóng)業(yè)大學(xué)碩士學(xué)位論文三種緩釋肥料的制備及其緩釋性能的研究姓名：周文兵申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：植物營養(yǎng)學(xué)指導(dǎo)教師：朱端衛(wèi)2002.5.1StudiesonthePreparationofThreeKindsofSIowReIeaseFertiIizerandTheirSIowReIeasePropertiestoNutrientsMACandidate：ZhouWenbingSupervisor：ProfZhuDuanweiSUMMA

2、RYAccordingtothemainproblemsintheslowrelease／controlledreleasefertilizerresearchincludingtoohighprice，unconformityofthereleaseoffertilizernutrientsandtheabsorptionofnutrientsbycropandnocommon，simpleandprecisemethodorcrit

3、erionindeterminationandevaluationontheslowreleasepropertiesoffertilizerespeciallyinmixedorblendedtypethisthesismadeuseofthenatural，cheapandeasygotmineralandotherorganic，inorganicchemicalsubstanceascarrieroradditiveagenti

4、npreparationofslowreleasefenilizerInthesemixedfertilizers，NPKofthefertilizerscouldreleaseslowlyInaddition，thisthesisalsoinvestigatedondeterminationandevaluationmethodofslowreleasefertilizer，Thephysicalchemicalpropertieso

5、fselfmadeslowreleasefertilizersandthemechanismofactionbetweenthefertilizersandthesoilwereilluminatedTheresultswerehelpfulindevelopmentandapplicationofslowrelease／controlledreleasefertilizerThemainresultsofthestudywereasf

6、ollows1Agglutinantswereusedinseperationoftheremainscomingfrombiogasanaerobicfermentationofchicken’sandpig’sexcrementThefecesobtainedthroughseparationwereorganicmatterwhichcouldbemanufacturedjntoorganicmixedfertilizersaft

7、erbeingsuitablydriedItwasprovedbypotexperimentthattheyieldofvegetablecouldbeincreasedsignificantlyandthequalityofproductcouldbeimprovedcomparedtocheekfertilizerThedevelopmentofthistypeoffertilizerhadgreatpotential2Natura

8、lzeolitewollastoniteandtheirmodifiedproductwereusedasinorganiccarriersofmixedfertilizerinwhichthenutrientcouldreleaseslowlyduetothehighcationexchangecapacity(CEC)Thefertilizere療bctsofdifrcrentmineraJtreatmentsanddi航rentm

9、ethodsoffertilizerapplicationwerecompared，andtheappropriateratioofnaturaIzeoliteinthemixedfertilizerwasobtainedamendingthesolJandreleasingnutrientsslowlywerethemechanismtotheyieldincrementofcrop3Chemicalmethodwasusedinpr

10、eparationfornitrogen，phosphorus，potassiumslowreleasemixedfertilizerandNPKcombinedslowreleasemixedfertilizer(chemicalslowreleasefertilizer)，respectivelyItwasprovedbythelaboratoryleachingexperimentsthatthefertilizershadcor

11、respondingnutrientslowreleaseeffectInotherhanditwasprovedbypotexperimentofNPKcombinedslowreleasemixedfertilizerthattheyieldofrapecouldbeincreasedsignificantlyandthenutrientsavailabilityoffertilizercouldbeenhanced4Themeth

12、odsofdeterminationandevaluationonslowreleasepropertiesofthreekindsofslowreleasemixedfertilizerasabovewerecomparedandselectedSincethetraditionalmethodswerelimitedforthefertilizersanewmethodwasusedinwhichfertilizerwasleach