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《管理措施對(duì)綠洲農(nóng)田土壤總有機(jī)碳及易氧化有機(jī)碳季節(jié)變化的影響》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫。
1、第31卷第5期石河子大學(xué)學(xué)報(bào)(自然科學(xué)版)VoI.31No.52013年10月JournalofShiheziUniversity(NaturalScience)Oct.2013文章編號(hào):1007—7383(2013)05—0549—07管理措施對(duì)綠洲農(nóng)田土壤總有機(jī)碳及易氧化有機(jī)碳季節(jié)變化的影響楊玲,張前兵,王進(jìn),羅宏海,張亞黎,張旺鋒(1石河子大學(xué)農(nóng)學(xué)院新疆兵團(tuán)綠洲生態(tài)農(nóng)業(yè)重點(diǎn)實(shí)驗(yàn)室,石河子832003;2新疆烏蘭烏蘇農(nóng)業(yè)氣象試驗(yàn)站,石河子832021)摘要:研究了新疆干旱區(qū)綠洲棉田不同管理措施對(duì)土壤有機(jī)碳及易氧化有機(jī)碳變化的影響,揭示棉
2、田土壤質(zhì)量的變化,以期為棉花合理施肥及提高農(nóng)田土壤肥力,實(shí)現(xiàn)資源的可持續(xù)利用提供依據(jù)。結(jié)果表明:土壤總有機(jī)碳含量在棉花播種前較低,花鈴期有機(jī)碳含量有所增加,至收獲期達(dá)到最大值;土壤易氧化有機(jī)碳含量在棉花播種前較低,在花鈴期達(dá)到最大值,而在收獲期明顯降低。不同農(nóng)業(yè)管理措施下,不同土層土壤總有機(jī)碳含量和易氧化有機(jī)碳含量均表現(xiàn)出土壤上層最高、隨土層深度增加呈降低的趨勢。不同灌溉方式下,滴灌棉田土壤易氧化有機(jī)碳的含量提高,土壤易氧化有機(jī)碳占總有機(jī)碳的比例增加,而漫灌棉田增加了土壤有機(jī)碳的穩(wěn)定性,有利于土壤有機(jī)碳的積累。關(guān)鍵詞:綠洲農(nóng)田;棉花;土壤有
3、機(jī)碳;易氧化有機(jī)碳;管理措施中圖分類號(hào):S153.621文獻(xiàn)標(biāo)志碼:AEffectofMainTechnicalMeasuresonSoilTotalOrganicCarbonandEasilyOxidationSeasonalDynamicsof0asisFarmlandYANGLing,ZHANGQianbing,LUOHonghai,ZHANGYali,ZHANGWangfeng。WANGJing。(1TheKeyLaboratoryofOasisEco—Agriculture,XinjiangProductionandConstru
4、ctionGroups/CollegeofAgriculture,ShiheziUniversity,Shihezi832003,China;2WulanwusuAgrometeorologicaIExperimentStationofXinjiang,Shihezi832021,China)Abstract:WeStudiedtheeffectsofdifferentmanagementmeasuresinthecottonfieldsonsoilorganiccarbonandeasilyoxidizedorganiccarboncha
5、ngesinaridareaofXinjiang,andrevealedthechangesofsoilqualityincottonfields,SOastoreasonablyfer—tilizecottonandimprovethefertilityofsoil,whichprovidesthebasisforsustainableutilizationofresources.Theresultsshowedthatsoiltotalorganiccarboncontentwaslowerbeforecottonsowing.Itin
6、creasedinthecontentofthebloomingperiod,andreachedthemaximuminharvestperiod.Thesoileasilyoxidizedorganiccarboncontentbeforecottonsowingwaslower,Itreacheditsmaximuminthebloomingperiod,andsignificantlyreducedinharvestperiod.Underdifferentagriculturalmanage—mentmeasures,soilto
7、talorganiccarboncontentandeasilyoxidizedorganiccarboncontentshowedadownwardtrendfromthesoilsurface.Dripirrigationcottonfieldscouldincreasesoileasilyoxidizedorganiccarboncontent,anditsproportationtOthetO—talorganiccarbon;floodirrigationcottonfieldsincreasedthestabilityofsoi
8、lorganiecarbon,anditwasconducivetotheaccumulationofsoilorganiccarbon.Keywords:oasisfarmla