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《施氮方式對(duì)玉米-大豆套作體系下大豆根瘤固氮、光合特性及產(chǎn)量的影響-論文.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、第32卷第6期大豆科學(xué)V0l_32No．62013年12月SOYBEANSCIENCEDee．2013施氮方式對(duì)玉米一大豆套作體系下大豆根瘤固氮、光合特性及產(chǎn)量的影響雍太文‘，董茜，劉文鈺，劉小明，徐婷，宋春，楊峰，王小春，楊文鈺(1．四川農(nóng)業(yè)大學(xué)農(nóng)學(xué)院／農(nóng)業(yè)部西南作物生理生態(tài)與耕作重點(diǎn)實(shí)驗(yàn)室，四川成都611130；2．四川農(nóng)業(yè)大學(xué)資源環(huán)境學(xué)院生態(tài)環(huán)境研究所四川成都6l1130)摘要：通過(guò)田間試驗(yàn)探討了施氮方式對(duì)玉米．大豆套作體系下大豆根瘤固氮酶活性、物質(zhì)積累、光合特性和產(chǎn)量的影響。結(jié)果表明：與不施氮相比，施
2、氮促進(jìn)了大豆根瘤生長(zhǎng)和地上部物質(zhì)積累，提高了大豆的根瘤固氮能力、光合生產(chǎn)能力和籽粒產(chǎn)量。玉豆一體化施氮相對(duì)大豆穴施顯著提高了大豆地下部根系和根瘤的干重、單株根瘤固氮潛力和地上部莖葉生物量、葉片凈光合速率及籽粒產(chǎn)量，降低了葉片的蒸騰速率，以距窄行玉米15—30em施氮增產(chǎn)效果最佳，與大豆間的施氮距離過(guò)小和過(guò)大均不利于大豆根瘤固氮和籽粒增產(chǎn)。距窄行玉米30cm施氮處理的大豆單株根瘤固氮潛力(R2期)、葉片凈光合速率、籽粒產(chǎn)量及玉米、大豆周年總產(chǎn)量分別比大豆氮肥穴施處理增加29．26％、7．43％、23．88％和6
3、．4％。關(guān)鍵詞：玉米一大豆套作；根瘤固氮酶活性；光合特性；產(chǎn)量；施氮方式中圖分類號(hào)：S147．3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1000-9841(2013)0643791436EfectofNApplicationMethodsonNitrogenase，Ph0t0synthesisandYieldofSoybeanunderMaize-SoybeanRelayStripIntercroppingSystemYONGTai—wen，DONGQian，LIUWen—yu，LIUXiao-ming，XUTing，SON
4、GChun’，YANGFeng，WANGXiao—chun．YANGWen．vu(1．CollegeofAgronomy，SichuanAgricuhura／University／KeyLaboratoryofCropPhysiology，EcologyandCultivationinSouthwest，MinistryofAgricul—ture，Chengdu611130，China；2．InstituteofEcologicalandEnvironmentalSciences，CollegeofReso
5、urcesandEnvironment，SichuanAgriculturalUniversi—ty，Chengdu611130，China)Abstract：ToinvestigatetheeffectofNapplicationmethodsonsoybeannodulenitrogenase，drymatteraccumulation，photo-synthetictraitsandseedyield，afieldexperimentwasconductedwithdifferentNapplicati
6、onmethods，suchascollaborationfer-tilizationofmaizeandsoybeanwithdiversitydistanceoffertilizationtona~owrowmaize，andfertilizinginsoybeanholes．Com·paredtonoNtreatment，applyingNsignificantlypromotednodulegrowthandshootdryweightaccumulation，nitrogen—fixinga—bil
7、ityofnodules，photosynthesisandseedyieldofsoybean．Collaborationfertilizationsignificantlyenhancedrootandnoduledryweight，nitrogen—fixingpotential，shootdryweight，netphotosyntheticrateandseedyield．Amongwhichthecropsyieldwasthehighestwhenthedistancebetweenthefer
8、tilizationdotandthena~owrowmaizewasfrom15to30centimeters．Whenthedis—tancewas30centimeters，nitrogen-fixingpotentialatR2，netphotosyntheticrate，soybeanseedyieldandtheannualtotalpro—ductionofmaizeandsoybea
