北京地區(qū)苜蓿收獲時期氣候適宜性及干草調制技術的研究.pdf

1、中國農(nóng)業(yè)大學碩士學位論文北京地區(qū)苜蓿收獲時期氣候適宜性及干草調制技術的研究姓名：王成杰申請學位級別：碩士專業(yè)：草業(yè)科學指導教師：周禾玉柱20030601StudiesonClimaticSuitabilityHarvestingPeriodandCuringTechnologyforAlfalfaHayinBeijingAreaMastercandidate：WangChengiieSuperviser：ZhouHe(ChinaAgri

2、culturalUniversityBeijing100094)AbstractThestudiesontheeco—climaticsuitabilityharvestingperiodandcuringtechnologyforalfalfahayofthethird。yearalfalfaaimstomeettheneedsoftechniquesimprovementforalfalfaindustryinBeijingArea

3、Theresultswereshownasfollows：1ThedayrainfallinsurancerateisefficacioustoguidechoiceofharvestedperiodTherainfallcentralizesmainlyfromJulytoAugustintheregionofBeijingThefirstharvestingdateofthealfalfaoughttobeonMay10，which

4、insuredthesecondharvestingalfalfatobeharvestedbeforeJulyThethirdharvestingalfalfamightbedelayedtothelasttendayofAugust，andharvestedbytakingbatchmethodofoperationaccordingtotheclimateforecastThefourthharvestingalfalfawoul

5、dbeaffectedifthethirdharvestingalfalfabedelayedbyrain2PressedstemofalfalfamightdestroyinteriortissueandreducetheresistanceofmoisturemovementTherewaschasmonthestemappearedwhenpressedThechangesofmoistureandthecontentofcrud

6、eproteinofalfalfawereaffectedbypressedstem3Thee髓ctsofseveralchemicaldesiccantsweredifferentfromthedryingratesofalfalfaSpraying20％potassiumcarbonatesolutionledto6hofdryingtimereducedWasalleffectivemethodforincreasingthedr

7、yingrateofunpressedstemofalfalfa，buthavingnoeffectsOnthepressedstemofalfalfaSprayingwiththetwocomponentmixtureofpotassiumcarbonateandsodiumcarbonatecouldreduced6hofdryingtimetounpressedstemofalfalf亂andthemoreeffectivetha

8、npressedstemofalfaIfaandsaved25％costofchemicaldesiccants，4ItWastestedthatthe‘‘sofa’waxcouldbedissolvedwhenleavesofalfalfaweredipped30sin2O％potassiumcarbonatesolutionbutnotdid‘hard”WaXoftheleavesKeyword：Alfalfa。Hayprocess