硝化抑制剂Nitrapyrin对猪粪堆肥腐熟度、N₂O 排放以及氮损失的影响

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中图分类号：X713；S141.4 文献标志码：A 文章编号：2095-6819（2025）04-0980-10 doi：10.13254/j.jare.2024.0376

Effects of nitrification inhibitor Nitrapyrin on maturity， N2O emission and nitrogen loss during pig manure composting

YUJialin，LIUYan，LIJiaming，CUI Zhongliang，LIGuoxue，YUANJing*

（BijingKeybatorofalandSlltionetiondmdiatioolfsoundEnotalSca

Agricultural University，Beijing10o193， China）

Abstract：Toinvestigate the comprehensive efectsofnitrificationinhibitorNitrapyrin[2-chloro- ⋅6- （trichloromethyl）pyridine]on compostmaturity，NOemissionandnitrogenlos，thisstudyusedpigmanureandcostrawasawmaterials.Andbasedonthtotal nitrogen（TN）contentoftheintialmixedawmaterials，twoaditionmethodswereset：addingNitrapyrinonlyattheinitialstageof composting（ 0.25% ），andaddingNitrapyrinincombinationat the initial stage（ 0.25% ）and maturation stage（ 0.75% ）.The results showed thattheadditionofitrapinouldotafecteprocessofompostdecompositionndteseedgnationidexvalueoftfinal compost product reached 81.02 % -101.38%.Theaddition ofNitrapyrin significantly reducedNOandNH emissions，andonlyadditionof Nitrapyrin at the beginning of composting reduced NH -3 emissions by 14.90% and N2O emissions by 16.27% . The combined addition of Nitrapyrin at the early stage and the maturation stage further increased the N2O emisson reduction rate to 27.43% .Finally，theadditionof NitrapyrinreducedtheTlossby1.63-8.68percentagepointsandincreasedthnitrogencontentofthecompostproduct（thenogen contentinNitrapinasngligible）.CorelationanalysissowdthatN-Ncontnt，tmperatreandpHweesignificantlgaiely correlatedwith N2O emission rate，and NO3--N content also contributed significantly to N2O production.Therefore，Nitrapyrin mainly increase the NH4-N content and pH value and reduce the NO3-Ncontent by inhibiting nitrification，thereby reducing N2O emissions. Keywords：composting; nitrification inhibitor;Nitrapyrin; nitrous oxide; nitrogen loss

近年来，随着我国畜禽养殖规模化、集约化程度的不断提升，畜禽粪便排放量逐年增加。（剩余18904字）