植物营养与肥料学报2025，Vol.31Issue(8)：1532-1541,10.DOI:10.11674/zwyf.2024553
减氮覆膜对晋南旱地小麦产量及农田碳足迹的影响
Impact of nitrogen reduction and film-mulching on wheat yield and carbon footprint in dryland of southern Shanxi Province
摘要
Abstract
[Objectives]From the perspective of soil greenhouse gas emission and carbon footprint,we studied the effects of monitored fertilization combined with different mulching methods on emission reduction and yield improvement to provide a reference for greening wheat production in drylands areas.[Methods]A long-term fertilization and mulching experiment was conducted in Hongdong County,Shanxi Province,and the cropping system was winter wheat-summer fallow,with five treatments:no fertilizer control,farmer's practice(FP),monitoring fertilization(MF),nitrogen reduction monitoring and control fertilization plus ridge film and furrow sowing(RF),nitrogen reduction monitoring and control fertilization plus flat film and hole sowing(FH).During the two wheat seasons in 2018-2020,wheat yield and economic benefits were investigated,and the life cycle approach was used to estimate the greenhouse gas(GHG)emissions,greenhouse gas warming potential and greenhouse gas emission intensity of wheat field soils,and to calculate the carbon footprint of wheat field soils.[Results]Compared to the FP treatment,the MF treatment achieved a 32.6%reduction in nitrogen fertilizer application while maintaining comparable wheat yields,along with significantly lowering GHG emissions by 24.0%.In contrast,the RF and FH treatments led to a significant increase in total GHG emissions by 12.0%and 44.6%,respectively.The production,transportation and application of nitrogen fertilizer contributed 20.3%-57.9%of total GHG emissions across treatments.Notably,plastic film usage under RF and FH treatments emerged as the second major emission source,accounting for 40.6%and 56.5%of total GHG emissions,respectively.Compared with FP,the MF treatment also significantly reduced the carbon footprint by 16.2%,while the RF and FH treatments had no significant effect on the carbon footprint;the MF,RF and FH treatments all significantly reduced the greenhouse gas emission intensity by 38.5%,53.1%and 63.6%,respectively.Compared with MF,RF and FH treatments significantly increased wheat grain yield by 33.2%and 69.7%,grain income by 33.2%and 69.7%,and net income by 59.4%and 135.8%,respectively,and the yield and income of FH treatment were also significantly higher than that of RF treatment.In addition,RF and FH treatments significantly reduced greenhouse gas emission intensity by 32.0%and 49.2%,respectively.[Conclusions]Film mulching on the basis of monitoring fertilization increased wheat grain yield and economic efficiency significantly.Nitrogen reduction monitoring and control fertilization plus flat film and hole sowing,owing to high land utilization efficiency,demonstrated even more remarkable yield and income benefits.Moreover,compared to nitrogen reduction monitoring and control fertilization plus ridge film and furrow sowing,it did not significantly raise the carbon footprint,and its greenhouse gas emission intensity was significantly lower than that of monitored fertilization without film mulching.Therefore,nitrogen reduction monitoring and control fertilization plus flat film and hole sowing is a optimal measure to achieve green,high and stable crop production in dryland regions.关键词
小麦产量/监控施肥/垄膜沟播/平膜穴播/经济效益/碳足迹/温室气体排放强度Key words
wheat grain yield/monitoring fertilization/ridge film and furrow sowing/flat film and hole sowing/economic efficiency/carbon footprint/greenhouse gas emission intensity引用本文复制引用
陈新茹,曹寒冰,谢钧宇,吴仪涵,罗云琪,喻航,曹蒙茹,伍展翔,李孟华,段成娇,李廷亮..减氮覆膜对晋南旱地小麦产量及农田碳足迹的影响[J].植物营养与肥料学报,2025,31(8):1532-1541,10.基金项目
国家重点研发计划子课题(2023YFD1900402) （2023YFD1900402）
山西省基础研究计划项目(20210302124153,202203021211278,202303021222050) （20210302124153,202203021211278,202303021222050）
山西省科技创新人才团队专项(202304051001042) （202304051001042）
2023年度中青年学术骨干出国(出境)留学项目. （出境）
