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| 铁改性生物炭与微生物菌剂配施对双季稻田甲烷排放的影响 |
| Effects of combined application of iron-modified biochar and microbial inoculants on methane emission from double cropping paddy fields |
| 投稿时间：2025-12-16 修订日期：2026-03-05 |
| DOI： |
| 中文关键词: 铁改性生物炭 微生物菌剂 甲烷 微生物量碳 可溶性有机碳 |
| 英文关键词: iron modified biochar microbial agents methane microbial biomass carbon soluble organic carbon |
| 基金项目:南方双季稻丰产低碳技术模式及配套机具(2022YFD2300305) |
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| 中文摘要: |
| 为探究铁改性生物炭与微生物菌剂单施及配施对双季稻田CH4(甲烷)排放的影响。于2024~2025年开展了大田试验,设置单施铁改性生物炭(T2)、单施菌剂(T3)、铁改性生物炭-菌剂配施(T4)处理,以不施(T1)为对照,采用静态箱-气相色谱法监测甲烷排放通量,并分析土壤微生物量碳和可溶性有机碳的动态变化。结果表明：相较于对照,单施铁改性生物炭、菌剂和铁改性生物炭与菌剂配施连续2年周年稻田CH4累计排放量分别降低26.59%、16.31%和37.48% (2024年,P < 0.05)和27.62%、20.28%和40.00% (2025年,P < 0.05),尤其是铁改性生物炭与枯草芽孢杆菌配施减排CH4效果最佳,累计排放量较对照降低35.18%~40.26%；同时,T4处理显著降低可溶性有机碳含量和提升了土壤微生物量碳含量,增强土壤碳库稳定性；相关性分析表明,CH4排放通量与土壤可溶性有机碳(DOC)呈极显著正相关,与微生物量碳(MBC)呈正相关,与土壤氧化还原电位(Eh)呈极显著负相关。研究表明,铁改性生物炭与微生物菌剂单施及配施均能降低稻田CH4排放,具体表现为T1>T3>T2>T4处理；综合考虑稻田固碳减排效果,以铁改性生物炭与菌剂配施的效果最佳。 |
| 英文摘要: |
| In order to explore the combined utilization of iron-altered biochar and microbial inoculants has an impact on methane emission from double cropping paddy fields.. A field experiment was carried out from 2024 to 2025. The treatments of single application of iron-modified biochar (T2), single application of microbial agent (T3), and combined application of iron-modified biochar and microbial agent (T4) were set up, with no application (T1) as the control. The methane emission flux were monitored by static chamber-gas chromatography, and the dynamic changes in soil microbial biomass carbon and soluble organic carbon were investigated. A significant |
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