Page 222 - 《水资源与水工程学报》2022年第4期
P. 222
2 1 8 & ' ( ) & * + , - 2022 $
fertilizer(42.46kg/kg),agronomicutilizationrateofnitrogenfertilizer(15.46kg/kg),aswellasthe
apparentutilizationrateofnitrogenfertilizer (47.79%)ofwinterwheatwerethehighest.Moreover,com
paredwithN1andN2treatments,thedrymatteraccumulationofN5treatmentincreasedby11.40% and
9.20%,theabovegroundnitrogenaccumulationincreasedby24.08% and11.49% andtheyieldin
creasedby22.41% and11.00%,respectively.TheresidualamountofnitratenitrogenintheN5treat
mentof0-40cmsoillayerwasthelargestatharvesttime,whichwasincreasedby1.30% -19.52%
comparedwithotherfertilizationtreatments.Tosumup ,thecombinationof75% slowreleasenitrogenfer
tilizerand25% ureatreatmentisthebestfertilizationschemeforhighyieldandhighfertilizerutilization
efficiencyofwinterwheat.
Keywords:winterwheat;slowreleasenitrogenfertilizer;yield;soilnitratenitrogen;nitrogenutilization
efficiency
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