Page 214 - 《水资源与水工程学报》2022年第4期
P. 214
!33 " ! 4 # & ' ( ) & * + , - Vol.33No.4
2022 $ 8 % JournalofWaterResources&WaterEngineering Aug.,2022
DOI:10.11705/j.issn.1672-643X.2022.04.28
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FGHIJ:S144;S511 KLMNO:A KPQJ:1672643X(2022)04021007
Effectsofcombinedapplicationofbioorganicfertilizeronnutrientaccumulation
andricegrowthinwatersavingirrigatedpaddyfields
1
1
1
1
2
HANZhengdi,ZHOUMingyao,YANGYaqin,YAOXianzi,HOUHuijing
(1.CollegeofHydraulicScienceandEngineering,YangzhouUniversity,Yangzhou225009,China;
2.PudongNewDistrictRiverManagementCenter,Shanghai201299,China)
Abstract:Inordertoexploreasuitableapplicationmodeofbioorganicfertilizerandchemicalfertilizer
forpaddyfields,theeffectsofapplicationmodeswithdifferentbioorganicfertilizertochemicalfertilizer
ratiosoneffectivesoilnutrientaccumulation ,ricegrowthandyieldinwatersavingirrigatedpaddyfields
wereinvestigatedbyplotexperiments.Fivetreatmentsweresetfortheobservation ,includingfullchemi
calfertilizer(T0),75% chemicalfertilizerwith25% bioorganicfertilizer(T1),50% chemicalfertiliz
erwith50% bioorganicfertilizer(T2),25% chemicalfertilizerwith75% bioorganicfertilizer(T3)
andfullbioorganicfertilizer(T4).Theresultsshowedthatthesoilorganicmattercontentincreasedafter
harvestinalltreatments ,withanincrementof21%-29%;furthermore,theeffectivephosphorusand
fastactingpotassiumcontentsofthesoilwereincreasedby2.1%-18.9% and6.0%-11.7%,respec
tively,withtheapplicationofbioorganicfertilizer.ComparedwiththeT0treatment,theapplicationof
bioorganicfertilizeradvancedthetilleringtimeofrice,improvedtheleafareaindexofriceupto
13.5%-40.5%,andincreasedthenumberofgrainsinthespike,theseedsettingrateandthethou
sandgrainweightofrice.Amongthetreatmentswithbioorganicfertilizer ,theyieldofriceintheT3and
T4treatmentswasincreasedby7.0% and1.7%,respectively,andthefinalbenefitofT3treatmentwas
significantlyincreasedby8.7% (P <0.05)inparticular.Itcanbeseenthatthetreatmentof25%
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