高莖壯苗深栽結合雙層施肥對烤煙生長及產(chǎn)量品質(zhì)影響.pdf

1、貴州大學碩士學位論文高莖壯苗深栽結合雙層施肥對烤煙生長及產(chǎn)量品質(zhì)影響姓名：趙承申請學位級別：碩士專業(yè)：植物營養(yǎng)指導教師：陸引罡20070501貴州人學碩l研究生論文高莖壯苗深晟結合雙層施肥對烤炯生K及產(chǎn)量品質(zhì)影響AbstractCombiningwiththelocalrealityofGuizhoutheexperimentregardedimprovingthetraditionalfarmingtechnique，reducing

2、workload，improvingutilizationratiooffertilizerandlaborproductivityandimprovingthequalityofflue—curedtobaccoasmainobjectives，researchedtheeffectofdifferenttransplantingdepthcombinedwithone—offdoublelayersfertilizerapplica

3、tiononthegrowth，economiccharactersandqualityofflue—curedtobaccobyfieldexperimentwiththemethodoffertilizerpracticecombiningwitllculturalpracticewhichofferedcertaintheoreticalfoundationforsavingcostandimprovingefficiencyof

4、flue—curedtobaccoproduction111emainresultsoftheexperimentWerCasfollows：High—sternanddeepseatedcultivationofgoodseedingcombinedwithoneoffdoublelayersfertilizerapplicationwasfavorablefortheabsorptiontoammoniumnitrogenandni

5、tratenitrogenbeforeBudStageFromRosetteStagetoFastGrowingStage，thesoileffectivePandeffectiveKcontentof9leaven—transplantingwerelowerthanwhichofconventionalcultivationThesoileffectivePandeffectiveKcontentofdeepseatedcultiv

6、ationcombinedwitlloneoffdoublelayersfertilizerapplicationreachedtomostinBugStage，whilewhichofconventionalcultivationreachedtomostinRoundTopStageInMaturityStage，thesoileffectivePcontentof9leaves—transplantingwaslowestThos

7、eshowedhigh—sternanddeepseatedcultivationofgoodseedingcombinedwithoneoffdoublelayersfertilizerapplicationwasfavorablefortheabsorptiontonutrientaheadoftimeHiglstemanddeepseatedcultivationofgoodseedingcombined1】l，itlloneof

8、fdoublelayersfertilizerapplicationWasfavorablefortheroots’growthoffluecuredtobacco，promotedtherootstogrowinhorizontalandvertical，increasedtheroots’activityofprestage，increasedthenumberoffirst—classlateralrootsandtheaccum

9、ulationofroots’drymatterItalsopromotedtherootstoabsorbNitrogenfromsoilinpregrowingstage111eNitrogencontentintherootshadsignificantchangetrendsbetweentheconventionalcultivationandeachprocessHi曲stemanddeepseatedcultivation

10、ofgoodseedingcombinedwithoneoffdoublelayersfertilizerapplicationWasfavorableforincreasingtheheight，stemgirth，effectiveleafnumbereffectiveleafareaofperplant，dryweightanddrymatter’saccumulationoftheplantIntheearlystageoftr