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《耕作方式與秸稈還田對(duì)土壤微生物數(shù)量,酶活性及作物產(chǎn)量的影響》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、應(yīng)用生態(tài)學(xué)報(bào)2015年6月第26卷第6期ChineseJournalofAppliedEcology,Jun.2015,26(6):1785-1792耕作方式與秸稈還田對(duì)土壤微生物數(shù)量、?酶活性及作物產(chǎn)量的影響1,2,31,4111,2,3??趙亞麗郭海斌薛志偉穆心愿李潮海123(河南農(nóng)業(yè)大學(xué)農(nóng)學(xué)院,鄭州450002;河南糧食作物協(xié)同創(chuàng)新中心,鄭州450002;小麥玉米作物學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室,鄭州4450002;河南省駐馬店市農(nóng)業(yè)科學(xué)院,河南駐馬店463000)摘要通過(guò)兩年田間裂區(qū)設(shè)計(jì)試驗(yàn),研究了不同土壤耕作方式(常規(guī)耕作、深耕、深松)與秸稈還田(秸稈還田、秸
2、稈不還田)對(duì)冬小麥?夏玉米一年兩熟農(nóng)田土壤微生物數(shù)量、酶活性和作物產(chǎn)量的影響.結(jié)果表明:深松(耕)和秸稈還田不僅降低了土壤容重,提高了土壤有機(jī)碳含量,而且增加了土壤微生物數(shù)量、土壤酶活性和作物產(chǎn)量,且二者對(duì)夏玉米季的影響大于冬小麥季.與常規(guī)耕作+無(wú)秸稈還田相比,深耕+秸稈還田、深松+秸稈還田處理的20~30cm土壤容重分別降低8.5%和6.6%,土壤有機(jī)碳含量分別提高14.8%和12.4%,土壤微生物數(shù)量、土壤酶活性分別提高45.9%、33.9%和34.1%、25.2%,作物產(chǎn)量分別提高18.0%和19.3%,且兩處理間無(wú)顯著差異.說(shuō)明土壤深松(耕)結(jié)合秸稈
3、還田有利于作物產(chǎn)量、土壤微生物數(shù)量和酶活性的提高.關(guān)鍵詞土壤耕作;秸稈還田;微生物群體;酶活性;產(chǎn)量文章編號(hào)1001-9332(2015)06-1785-08中圖分類號(hào)S151.9文獻(xiàn)標(biāo)識(shí)碼AEffectsoftillageandstrawreturningonmicroorganismquantity,enzymeactivitiesinsoils1,2,31,411andgrainyield.ZHAOYa?li,GUOHai?bin,XUEZhi?wei,MUXin?yuan,LIChao?1,2,312hai(CollegeofAgronomy,Hen
4、anAgriculturalUniversity,Zhengzhou450002,China;Colla?3borativeInnovationCenterofHenanGrainCrops,Zhengzhou450002,China;NationalKeyLabora?4toryofWheatandMaizeCropScience,Zhengzhou450002,China;ZhumadianAcademyofAgri?culturalSciences,Zhumadian463000,Henan,China).?Chin.J.Appl.Ecol.,2015
5、,26(6):1785-1792.Abstract:Atwo?yearfieldstudywithsplitplotdesignwasconductedtoinvestigatetheeffectsofdifferentsoiltillage(conventionaltillage,CT;deeptillage,DT;subsoiltillage,ST)andstrawre?turning(allstrawretention,AS;nostrawreturning,NS)onmicroorganismquantity,enzymeac?tivitiesins
6、oilandgrainyield.Theresultsshowedthat,deeporsubsoiltillageandstrawreturningnotonlyreducedthesoilbulkdensityandpromotedthecontentoforganiccarboninsoil,butin?creasedthesoilmicrobialquantity,soilenzymeactivitiesandgrainyield.Furthermore,suchinflu?encesinmaizeseasonweregreaterthanthati
7、nwheatseason.ComparedwithCT+NS,DT+ASandST+ASdecreasedthesoilbulkdensityat20-30cmdepthby8.5%and6.6%,increasedthecon?tentofsoilorganiccarbonby14.8%and12.4%,increasedthemicroorganismquantityby45.9%and33.9%,increasedthesoilenzymeactivitiesby34.1%and25.5%,increasedthegrainyieldby18.0%an
8、d19.3%,respectively.Nosign