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《濱海鹽堿地棉花秸稈還田對(duì)土壤理化性質(zhì)及棉花產(chǎn)量的影響 優(yōu)先出版.pdf》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、網(wǎng)絡(luò)出版時(shí)間：2017-04-2709:48:34網(wǎng)絡(luò)出版地址：http://kns.cnki.net/kcms/detail/11.1809.S.20170427.0948.014.html濱海鹽堿地棉花秸稈還田對(duì)土壤理化性質(zhì)及棉花產(chǎn)量的影響11,21,3111秦都林王雙磊劉艷慧聶軍軍趙娜毛麗麗1,*1,*宋憲亮孫學(xué)振12山東農(nóng)業(yè)大學(xué)農(nóng)學(xué)院/作物生物學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室，山東泰安271018；煙臺(tái)市農(nóng)業(yè)技術(shù)推廣中心，山東煙臺(tái)2640003曲阜市農(nóng)業(yè)局，山東曲阜273100摘要:在濱海鹽堿地定點(diǎn)設(shè)置連續(xù)3年棉花秸稈還田和未還田2個(gè)處理，研究其對(duì)0~60cm土層土壤理化性質(zhì)和棉花產(chǎn)量的影響。結(jié)果
2、表明，連續(xù)3年棉花秸稈還田顯著降低0~30cm土層土壤容重和0~10cm土層<0.25mm土壤微團(tuán)聚體含量；顯著提高0~10cm土層>5mm土壤大團(tuán)聚體含量。在0~20cm土層，3年秸稈還田顯著提高棉花播前和各生育階段土壤有機(jī)質(zhì)、硝態(tài)氮、銨態(tài)氮和速效鉀含量，平均分別比對(duì)照提高13.45%、18.57%、22.80%和22.57%；降低土壤速效磷和含鹽量，平均分別比對(duì)照降低18.29%和16.59%。在20~40cm土層，3年秸稈還田顯著提高土壤硝態(tài)氮和銨態(tài)氮含量，平均比對(duì)照提高37.20%和31.62%；顯著降低土壤含鹽量，平均比對(duì)照降低19.06%。在40~60cm土層，3年秸稈還田顯著
3、提高土壤硝態(tài)氮和銨態(tài)氮含量，平均分別比對(duì)照提高38.26%和24.83%。3年棉花秸稈還田分別比未還田顯著提高棉花籽棉產(chǎn)量11.57%、19.01%和13.24%和皮棉產(chǎn)量18.56%、19.78%和18.73%，但對(duì)棉花單鈴重和衣分無(wú)顯著影響。關(guān)鍵詞:棉花；秸稈還田；鹽堿地；土壤理化性質(zhì)；產(chǎn)量EffectsofCottonStalkReturningonSoilPhysicalandChemicalPropertiesandCottonYieldinCoastalSaline-AlkaliSoil11,21,3111QINDu-Lin,WANGShuang-Lei,LIUYan-Hui,
4、NIEJun-Jun,ZHAONa,MAOLi-Li,SONG1,*1,*Xian-Liang,andSUNXue-Zhen12StateKeyLaboratoryofCropBiology,CollegeofAgronomy,ShandongAgriculturalUniversity,Tai’an271018,China;YantaiAgriculturalTechnology3ExtensionService,Yantai264000,China;QufuAgriculturalBureau,Qufu273100,ChinaAbstract:Acontinuousthree-year
5、fieldexperimentofcotton-residueincorporationincoastalsaline-alkalilandwasconducted,withtwotreatments:residueremovalandresidueincorporation.Thesuccessivecottonstalkreturningsignificantlydecreasedsoilbulkdensityin0-30cmsoillayerandsoilmicro-aggregateswithparticlesize<0.25mmin0-10cmsoillayer,whilesig
6、nificantlyincreasedthecontentofsoilmacro-aggregateswithparticlesize>5mmin0-10cmsoillayer.Comparedwiththecontrol(residueremoval),thetreatmentofcottonresiduesincorporationsignificantlyincreasedsoilorganicmatter,nitratenitrogen,ammoniumnitrogenandavailablepotassiumby13.45%,18.57%,22.80%and22.57%,resp
7、ectively,whiledecreasedsoilavailablephosphorusandsalinityby18.29%and16.59%atpre-sowingandeachgrowthstagein0-20cmsoillayer.Soilnitratenitrogenandammoniumnitrogenwereincreasedby37.20%and31.62%andsoilsalinityhadared
