控釋氮肥對雜交水稻吸收不同類型磷肥影響的研究.pdf

1、湖南農(nóng)業(yè)大學(xué)碩士學(xué)位論文控釋氮肥對雜交水稻吸收不同類型磷肥影響的研究姓名：蘇陽申請學(xué)位級別：碩士專業(yè)：生物物理學(xué)指導(dǎo)教師：劉德林20070301StudyontheEffectofControlledReleaseFertilizerontheDifferentKindsofPhosphorusFertilizersAbsorptionofHybridRiceAbstractThisresearchmainlyfocusOil：thee

2、ffectofCRFonthephosphorusabsorptionofhybridfleeandsoil—fixedP：theeffectofdifferentamountofCRFonthephosphorusabsorptionandyieldofhybridrice；theeffectofCRFanddifferentkindsofphosphatefertilizersonthegrowth，phosphorusbalanc

3、eandyieldofhybridfleebyusing“Ptracertechniqueinhybridrice(8820s／R29)Themainresultsareshowedasfollowing：1Experimentalresultsof3Zpusedtotracephosphatefertilizershowedthat：thetrendofphosphorusabsorptionofhybridfleeinthewhol

4、egrowthstagesis“S”curveComparedwithureaCRFcouldsignificantlyincreasetheabsorptionoftotalphosphorus，phosphatefertilizerandphosphorusinsoilofhybridriceinmaximumtiUeringstage，bootingstageandripeningstageTherateofreleaseofni

5、trogennutrientfromCRFisidenticaltotherequirementofcropplantssoCRFcouldsignificantlyimprovethephosphatefertilizerutilizationindexesofhybridriceandmakethephosphorustransferfromstemsandleafstoseedsAndfinallyCRFincreasedthey

6、ieldofhybridricetheapplicationofCRFcouldenhancetheefficiencyofphosphorousfertilizerofcropsthatwereinseasonreclamationradioofphosphorousfertilizerandtherecycledphosphorousfertilizerthatwasfromtheresiduumofphosphorousferti

7、lizerwhiledecreasedthefixationofphosphorousfertilizerinsoil2ExperimentwillsconductedtostudytheeffectofdifierentamountofCRFonthephosphorusabsorptionandyieldofhybridriceTheresultshowedthat，theapplicationofCRFcouldimproveth

8、enooftillersandspike，thechlorophyllcontentanddrymatterweightduringgrowthstagesandtheyieldofhybridriceWhentheamountofnitrogennutrientofCRFwasdecreasedby30％，thenooftillersandspike，thechlorophyllIIcontent，thedrymatterweight