資源描述:
《不同稻-麥栽培管理方式對稻季農(nóng)田溫室氣體排放的影響.pdf》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫。
1、浙江農(nóng)業(yè)學(xué)報ActaAgriculturaeZhejiangensis,2014,26(4):1015—1020http://www.zjnyxb.cn金國強,徐攀峰,方文英,等.不同稻一麥栽培管理方式對稻季農(nóng)田溫室氣體排放的影響[J].浙江農(nóng)業(yè)學(xué)報,2014,26(4):1015—1020.DOI:10.3969/j.issn.1004—1524.2014.04.32不同稻一麥栽培管理方式對稻季農(nóng)田溫室氣體排放的影響金國強,徐攀峰,方文英,阮關(guān)海,陳合云,閆川I(杭州市余杭區(qū)農(nóng)業(yè)技術(shù)推廣中心,浙江杭州311100;浙江農(nóng)科種業(yè)有限公司,浙江
2、杭州310021;3杭州科奧種業(yè)有限公司,浙江杭州311l21)摘要:通過研究水稻品種與種植方式對水稻生長階段稻田CH,NO,CO排放的影響,探討適宜浙江的低碳環(huán)保型稻一麥栽培模式。結(jié)果表明,麥季和稻季栽培方式明顯影響水稻生長階段稻田溫室氣體排放通量,麥季和稻季均免耕的處理,3種溫室氣體排放量均最大,顯著高于稻麥旋耕的處理。不同類型水稻品種溫室氣體排放量有差異,雜交品種在分蘗期、拔節(jié)孕穗期和灌漿期CH,N:O,CO:的總排放量和單位籽粒產(chǎn)量的排放量低于常規(guī)水稻,差異達顯著水平。土壤水勢影響稻田溫室氣體的排放量,減少灌溉有利于稻田CH,CO:排
3、放量的降低,但過低的灌溉量會導(dǎo)致N:O排放通量的顯著增加和籽粒產(chǎn)量的明顯下降。因此,通過選用雜交水稻品種,采用旋耕栽培方式,并配合土壤水勢為一2O~一30kPa(田面無水層,土壤濕潤無裂痕)的灌溉量,可顯著減少稻田溫室氣體的排放。關(guān)鍵詞:稻一麥栽培模式;周年高產(chǎn);溫室氣體;農(nóng)田中圖分類號:S157.4:S511文獻標志碼:A文章編號:1004.1524"(2014)04—1015-06Effectsofmanagementapproachesongreenhousegasemissionsintherice-wheatfieldJINGuo.
4、qiang,XUPan.feng,F(xiàn)ANGWen.ying,RUANGuan.hai,,CHENHe.yun',YANChuan’(HangzhouYuhangAgriculturalTechnologyPromotionCenter,Hangzhou311100,China;ZhejiangNongkeSeedIndustryCo.Ltd.,Hangzhou310021,China;HangzhouKenoSeedIndustryCo.Ltd.,Hangzhou311121,China)Abstract:Inordertoexploreth
5、esuitablemanagementapproachesforlow-carbonagriculturalproductioninZhejiangProvince,theeffectsofricevarietiesandplantingpatternonCH4,N20andCO2emissionwereinvestigated.Itwasshownthatthecultivationmethodofwheatandricesignificantlyinfluencedgreenhousegasemissionduringthericesea
6、son.Underthemanagementofnotillage,thegreenhousegasemissionwasthelargest,andwassignificantlyhigherthanthemanagementofrotarytillage.Ricevarietiesalsoinfluencedgreenhousegasemission.ThetotalemissionsofCH4,N20,CO2andemissionsperunitgrainyieldofhybridricevarietiesweresignificant
7、lylowerthantheconventionalricevarietiesinthetillingstage,jointing—bootingstageandfillingstage.Besides,soilwaterpotentialcouldimpactgreenhousegasemission.ReducingriceirrigationdecreasedCH4andCO2emissioninthericefield.But,theexcessiveloweredirrigationwouldsignificantlyincreas
8、eN2Oemissionyetdecreasethegrainyield.Inconclusion,thegreenhousegasemissioninricefi