濕澇對花生營養(yǎng)吸收和生長的影響及其營養(yǎng)調(diào)控研究.pdf

1、湖南農(nóng)業(yè)大學(xué)碩士學(xué)位論文濕澇對花生營養(yǎng)吸收和生長的影響及其營養(yǎng)調(diào)控研究姓名：劉飛申請學(xué)位級別：碩士專業(yè)：生態(tài)學(xué)指導(dǎo)教師：鄒冬生20050601EffectsofWaterloggingontheNutrientAbsorptionandGrowthofPeanutanditsNutritionregulationAbstractThisstudywasmainlyaimedatthedamagebywaterlogginginpeanu

2、tproductionregionstakingplaceinsouthofChinaduringspringandsummerseasonsWithpotexperimentefectsofWaterlogginganditsdiferentnutritionregulationsonthenutrientabsorptionandgrowthofpeanutwasstudied.Themainresultswereasfollows

3、1)UndertheconditionofwaterloggingthepeanutwasseriousrestrainedinabsorptionandaccumulationofNPKCaandMg.ThetotalamountsofN只KandCaelementsinleavesdecreasedthemostobviously.Thechangetrendinrootsystemtookthesecondplaceanddrop

4、pedrelativelylessinstem.ThetotalamountofMgelementdroppedthemostobviouslyinthestem.Itwassecondinleavesanditdroppedleastintheroots.TheefectofwaterloggingonthetotalaccumulationofmainnutrientelementinHua376isgreaterthanthati

5、nYuhua15aftertheharvestofthepeanut2)AllnutritionregulationsimprovedtheabsorptionandaccumulationofNPKCaandMginpeanutaftersuferingfromwaterlogging.Dealwiththeresultobviouslyinregulationwithnitrogencomponentpart.Phosphorusf

6、ertilizercanimprovetheabsorptionandaccumulationofpeanutnutritionverybetteronlaterstagebuttheefectisobviousandrelativelyslowTheothersregulationsimprovedwiththesmallerrange.AccumulationofNintheleavesandaccumulationofCainth

7、eyoungfruitwasremarkablepositivecorrelationwithpeanutyield3)Wterloggingresultedindecreaseinthemainstemheightofpeanut.Thestemincreasedthick.Thebranchcountedreduced.Theleafagedroppedandthecontentofchlorop勿IIreduced.Atthesa

8、metimetheaccumulationofdrymatterreducedbyalargemargin.DrymateroftheleafandsteminHue376droppedgreater.Secondlyitwaspodandrootsystem.DistributionproportionofpodandrootsystemincreasedYuhua15droppedrelativelyheavilywiththepo