Impact of rice-straw biochar on some selected soil propertiesand rice (Oryza sativa L.) grain yield稻草生物炭对某些土壤性质的影响 水稻（Oryza sativa L.）籽粒产量

《Impact of rice-straw biochar on some selected soil propertiesand rice (Oryza sativa L.) grain yield稻草生物炭对某些土壤性质的影响 水稻（Oryza sativa L.）籽粒产量》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、InternationalJournalofAgronomyandAgriculturalResearch(IJAAR)ISSN:2223-7054(Print)2225-3610(Online)http://www.innspub.netVol.3,No.4,p.14-22,2013RESEARCHPAPEROPENACCESSImpactofrice-strawbiocharonsomeselectedsoilpropertiesandrice(OryzasativaL.)grainyieldAdelMohamedGhoneim1*,AzzaIbrah

2、imEbid21AgriculturalResearchCenter,RiceResearchandTrainingCenter(RRTC),SoilFertilityandPlantNutritionLaboratory,Sakha,33717,KafrEl-Sheikh,Egypt2DepartmentofBiology,CollegeofScience,PrincessNoraBintAbdulRahmanUniversity,P.O.Box376114Riyadh11335,SaudiArabiaArticlepublishedonApril23,

3、2013Keywords:Ricestrawbiomass,biochairproduction,soilchemicalproperties,Ndynamics.AbstractBiocharisaco-productofpyrolysisofricestrawbiomass,itsqualitiesvaryaccordingtopyrolysisconditionsbutitmainlycontainsphosphorusandpotassium.Thecarbon(C)contentinbiocharisstable,soitcanbeapplied

4、tosoilswhichenlargingtheCsink.Inthepresentinvestigation,abiocharwasproducedfromricestrawresidue,characterizedanditseffectonricegrainyield,pH,soilorganiccarbon,totalNandchangesinNH4+–NandNO3-–Nconcentrationsinricesoilunderintermittentwetting-dryingandcontinuousfloodingwereexamined.

5、Theresultsshowedthat,thericestraw-derivedbiochairproducedwasneutralinpHandthecationexchangecapacity37cmolkg-1.Applicationofbiochar,reducestheNH4+–NandNO3-–Nconcentrationsinsoilirrespectiveofmoistureconditions.SucheffectwasmorepronouncedonNH4+–NandNO3-–Nconcentrationsunderfloodingc

6、onditionandintermittentwetting&dryingcondition,respectively.IncreasingtherateofricestrawderivedbiochairapplicationratehadsignificantlydecreasedboththeNH4+–NandNO3-–Nconcentrationsinsoil.TheresultedriceyieldfromT3(30gbiochairperkg-1drysoil)wasthehighestandsignificantdifferencecompa

7、redtoothertreatments.ThebiochairapplicationsignificantlyenhancedthetotalsoilN,soilorganiccarbonandsoilpHunderbothfloodingandwetting&dryingconditions.*CorrespondingAuthor:AdelMohamedGhoneimaghoneim@ksu.edu.saGhoneimandEbidPage14Introductionofcharcoalischaracterizedwithpoly-condens

8、edAlthoughricestrawresidueconstit