| 马静,陆昕昱,宋俊杰,孙丽英.有机肥和生物菌剂对菜地土壤N2O排放及土壤团聚体的影响[J].农业环境科学学报,2026,45(1):251-261. |
| 有机肥和生物菌剂对菜地土壤N2O排放及土壤团聚体的影响 |
| Effects of organic fertilizer and microbial agent application on soil N2O emission and soil aggregate in vegetable fields |
| 投稿时间：2025-03-03 |
| DOI：10.11654/jaes.2025-0204 |
| 中文关键词: 有机肥 生物菌剂 N2O 团聚体 产量 |
| 英文关键词: organic fertilizer microbial agent N2O aggregate yield |
| 基金项目:江苏省碳达峰碳中和科技创新项目（BE2022425）；国家自然科学基金项目（41501245） |
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| 中文摘要: |
| 为探究不同施肥处理对菜地土壤N2O排放、产量及土壤团聚体的影响，本研究以南京地区菜地为研究对象，设置不施氮肥（CK）、施化学氮肥（U）、化学氮肥和生物菌剂配施（UM）、有机肥替代25%化学氮肥（O）、有机肥替代25%化学氮肥和生物菌剂配施（OM）5个处理。采用静态暗箱-气相色谱法，观测菜地土壤N2O的排放，并分析不同施肥处理对菜地土壤N2O排放量、综合温室效应（GWP）、温室气体排放强度（GHGI）、产量、土壤团聚体组成、经济效益等的影响。结果表明：与U处理相比，O处理土壤N2O累积排放量增长了12.70%，UM和OM处理土壤N2O累积排放量均有所降低，其中，UM处理降低了16.67%，OM处理显著降低了23.81%（P<0.05）。在各施肥处理中，OM处理产量最高，为11.9 t·hm-2，O处理次之，为11.2 t·hm-2。此外，O和OM处理降低了<0.25 mm团聚体占比，提高了土壤中大团聚体占比，增加了土壤团聚体稳定性。研究表明，有机肥配施生物菌剂处理可以减缓菜地土壤N2O排放并提高作物产量和经济效益，是实现农业低碳高产的一种可行性措施。 |
| 英文摘要: |
| In order to explore the effects of different fertilization treatments on soil N2O emission, yield and soil aggregate in vegetable fields, the study took vegetable fields in Nanjing as the research object, and set up 5 treatments which consisted of no fertilization（CK）, chemical nitrogen fertilizer application（U）, chemical nitrogen fertilizer and microbial agent application（UM）, organic fertilizer instead of 25% chemical nitrogen fertilizer（O）and organic fertilizer instead of 25% chemical nitrogen fertilizer and microbial agent application （OM）. The study employed the static chamber-gas chromatography method to monitor N2O emissions from vegetable field soils and analyzed the effects of different fertilization treatments on N2O emission fluxes, global warming potential（GWP）, greenhouse gas intensity （GHGI）, crop yield, soil aggregate composition and economic benefits. The results showed that the cumulative N2O emissions of soils treated with O treatment increased by 12.70% compared with the U treatment, while those treated with UM and OM decreased. Specifically, the cumulative N2O emission of soils treated with UM treatment was decreased by 16.67%, and those treated with OM treatment was significantly decreased by 23.81%（P<0.05）. Among the fertilization treatments, the highest yield was achieved with the OM treatment, reaching 11.9 t·hm-2, followed by the O treatment with a yield of 11.2 t·hm-2. In addition, the O and OM treatments reduced the proportion of <0.25 mm soil aggregates, increased the proportion of large soil aggregates, and enhanced soil aggregate stability and economic benefits. It can be seen that organic fertilizer combined with microbial agent treatment is a feasible measure to achieve low carbon and high yield in agriculture which can help reduce soil N2O emission and increase crop yield. |
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