Page 221 - 《水资源与水工程学报》2022年第4期
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!33 " ! 4 #                       & ' ( ) & * + , -                               Vol.33No.4
               2022 $ 8 %               JournalofWaterResources&WaterEngineering                 Aug.,2022

            DOI:10.11705/j.issn.1672-643X.2022.04.29


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                ­›7Òb1 N1 ? N2 µF¨ö¥Y 11.40%? 9.20%, @œåæy7Òb¨ö¥Y 24.08%?11.49%, Hb
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                FGHIJ:S147.34   KLMNO:A    KPQJ:1672643X(2022)04021708

                  Effectsofslowreleasenitrogenfertilizerapplicationratioonyieldand
                            nitrogenfertilizerutilizationefficiencyofwinterwheat


                           ZOUQifang,GUXiaobo,LIYuannong,CHENPengpeng,CAOJunhao
                    (KeyLaboratoryofAgriculturalSoilandWaterEngineeringinAridandSemiaridAreas,MinistryofEducation,
                                         NorthwestA&FUniversity,Yangling712100,China)

                Abstract:ConsideringthelowfertilizerutilizationefficiencyinGuanzhong,ShaanxiProvince,theexperi
                mentforthecombinedapplicationofslowreleasenitrogenfertilizerandureawascarriedoutinYangling,
                ShaanxiProvince.Differentcombinationswasset,namely,N0(nonnitrogenfertilizer),N1(100% ure
                a ),andfourdifferentfertilizerdosagesincludingN2(100% slowreleasenitrogenfertilizer),N3(25%
                slowreleasenitrogenfertilizer+75% urea),N4(50% slowreleasenitrogenfertilizer+50% urea),N5
                (75% slowreleasenitrogenfertilizer+25% urea),andthenonfertilizationCKwasusedasthecontrol.
                Subsequently ,effectsofthecombinedapplicationofslowreleasenitrogenfertilizerandureaondrymatter
                accumulationandnitrogenabsorptionofwinterwheat,soilnitratecontentanddistribution,yieldandutili
                zationefficiencyofwaterandnitrogenwereanalyzed.Accordingtotheresults,comparedwithN1andN2
                treatmentsthecombinedapplicationofslowreleasenitrogenfertilizerandureanotonlycansignificantly
                increasethedrymatteraccumulation (4.69% -11.40%),nitrogenabsorption(5.92% -24.08%)and
                yieldofwinterwheat(6.00% -22.41%),butalsocanenhancethecontentofnitratenitrogen
                (2.09% -45.51%)inthesurfacesoil(0-40cm),reduceitsleachingtothedeepsoilandfinallyim
                provethenitrogenutilizationefficiency.Inaddition,inN5treatment,thepartialproductivityofnitrogen

                !"#$:20220228; %&#$:20220517
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                +,-.: Ì9Û(1996-), -, Rh›»., .045, ¦§Ì§¿9TUF45。
                ÑÒ+,: ôÒ·(1962-), +, Y"HÓ., 23, /0., ¦§Ì§¿9TU%ð* 3S %ð'’45。
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