长期施肥对小麦玉米轮作系统的影响

《长期施肥对小麦玉米轮作系统的影响》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Long-termmanureamendmentsandchemicalfertilizersenhancedsoilorganiccarbonsequestrationinawheat(TriticumaestivumL.)–maize(ZeamaysL.)rotationsystem长期粪肥修复和化肥增强了小麦（TriticumaestivumL.）-玉米（ZeamaysL.）轮作系统中的土壤有机碳吸收AbstractBACKGROUND:Thecarbonsequestrationpotentialisaffectedbycroppingsystemandmanag

2、ementpractices,butsoilorganiccarbon(SOC)sequestrationpotentialunderfertilizationsremainsunclearinnorthChina背景：碳固存潜力是种植系统和管理实践的影响，但是在施肥条件下中国北方的土壤有机碳（SOC）固存潜力仍不清楚ThisstudyexaminedSOCchange,totalCinputtosoiland,viaintegrationoftheseestimatesoveryears,carbonsequestrationefficiency(CSE,theratio

3、ofSOCchangeoverCinput)undernofertilization(control),chemicalnitrogenfertilizeralone(N)orcombinedwithphosphorusandpotassiumfertilizers(NP,NK,PKandNPK),orchemicalfertilizerscombinedwithloworhigh(1.5×)manureinput(NPKMand1.5NPKM).这项研究检测了SOC变化，土壤的总C输入，并通过多年来综合估计碳螯合效率（CSE，SOC变化与C输入的比率）在没有施肥（对照

4、），只有化学氮肥（N）或与磷肥和钾肥（NP，NK，PKandNPK）组合，或与低或高（1.5×）粪肥投入（NPKMand1.5NPKM）组合。RESULTS:Resultsshowedthat,ascomparedwiththeinitialcondition,SOCcontentincreasedby0.03,0.06,0.05,0.09,0.16,0.26,0.47and0.68MgCha−1year−1undercontrol,N,NK,PK,NP,NPK,NPKMand1.5NPKMtreatmentsrespectively.Correspondingly,t

5、heCinputsofwheatandmaizewere1.24,1.34,1.55,1.33,2.72,2.96,2.97and3.15Mgha−1year−1respectively.结果表明，与初始条件相比，SOC含量在对照，N，NK，PK，NPNPK，NPKM和1.5NPKM处理条件下分别提高了0.03,0.06,0.05,0.09,0.16,0.26,0.47和0.68MgC。相应地，小麦和玉米的C投入分别为1.24,1.34,1.55,1.33,2.72,2.96,2.97和3.15Mg。Thelong-termfertilization-inducedCS

6、Eshowedthatabout11%ofthegrossCinputwastransformedintoSOCpool.长期施肥诱导的CSE显示约11％的总C输入转化为SOC库。CONCLUSION:Overall,thisstudydemonstratedthatdecade-longmanureinputcombinedwithchemicalfertilizerscanmaintainhighcropyieldandleadtoSOCsequestrationinnorthChina.结论：总的来说，本研究表明，长达10年的粪肥与化肥相结合投入，可以保持较高的作

7、物产量，并导致华北地区的SOC封存。INTRODUCTIONThesoilorganiccarbon(SOC)poolisanimportantindicatorofsoilqualityandhassignificantdirectandindirectimpactsonsoilquality.土壤有机碳（SOC）库是土壤质量的重要指标，对土壤质量具有显著地直接和间接影响。MaintenanceofSOCisessentialforlong-termsustain-ableagriculture,sincedeclininglevels