植物生長調(diào)節(jié)劑對草地早熟禾、高羊茅生長及氮素吸收的影響研究.pdf

1、河北農(nóng)業(yè)大學(xué)碩士學(xué)位論文植物生長調(diào)節(jié)劑對草地早熟禾、高羊茅生長及氮素吸收的影響研究姓名：楊建肖申請學(xué)位級別：碩士專業(yè)：作物栽培學(xué)與耕作學(xué)指導(dǎo)教師：邊秀舉20050619_____●_____________________●●__________●?！馹______’_。_______。________________。。。。。。。。。。?！?。?！籗tudyoninfluenceofapplingp

2、lantgrowthregulatorsongrowthandnitrogenrequirementofKentuckybluegrassandtallfcscuePostgraduate：YANGJianxiao7Yutor：ProfBIANXiujUMajor：CropCultivationandFarmingSystemScienceAbstractThreetypesofnewPGRs，Trinexapac—ethyl，Pacl

3、obutrazolandEthephontradenameused：Primo，TrimmitandProxy，hadbeenadoptedinthisexperimentThemodeofactionofthesegrowth—inhibitingcompoundsarcinhibitingcellelongationbyreducingproductionofgibberellicacid，andconsequentiallyred

4、ucemowingfrequencyEachtypeofchemicalwasappliedatthreeconcentrationstopottedcold—seasonallawnofKentuckyblnegrassandtallfescue(PixieandNuglade)，andtheheight，clippingweightschlorophyl1contentandthetotalNoftheturfgrassclippi

5、nginthisexperimentPrimocouldinhibitthegrowthofKentuchybluegrassandtallfescue，andthehighestconentrationsshowedthebesteffectTherewrersomedifferencesofPrimo’SgrowthregulatingeffectonKentuchybluegrassandtallfescueGrowthsuppr

6、essionofKentuchybluegrassoccuredat21daysafterapplicationandlastedfor30daysHowever，thegrowthsuppressionoftallfescuecouldbeobviouslydiscoveredafter7daysofapplication(P005)andthedurationofactivitycouldlast40daysTherefor，Pri

7、mo’SeffectontallfescueWasbetterthanonKentuchybluegrassandthedurationofactivitywasmuchlongerTrimmithadrioevidenteffectonKentuchybluegrassandtallfescueProxyhadgoodeffectonKentuchybluegrass，butithadnoevidenteffectontallfesc

8、uePrimowerehighlyeffectiveinreducingclippingweightsofKentuchybluegrassandtallrescue，andthehighestconentrationshadthebesteffectClippingweightstreatedwiththeProxyhighestratewerereducedtosomeextentbutithadlittleeffectontall

9、fescueTrimmithavenoevidentlyeffectonclippingweightsofKentuchybluegrassandtallfescuechlorophyI1contentofKentuchybluegrasstreatedwiththe3typesofchemicalwashigherthanCK，butchlorophyl1contentoftallfescuetreatedwiththe3typeso

10、fchemicalwaslowerChlorophyl1contenttreatedwithlowandhighratesofPrimoandhighrateofTrimmitwasevidentlyhigherthanCK，butPrimowastheonlythatdidnotdecreasethechlorophy11contentoftallfescue(P005)OnlyProxyincreasedthechlorophyll

11、a／bvalueofKentuchybluegrassbutPrimohadbestelfeetontallfescuePrimo，TrimmitandProxyallhadsomeeffectonKentuchybluegrass’StotalNoftheturfgrassclippingButwhichallhadnoeffectontallfescue’StotalNoftheturfgrassclippingKeywords：p