The greenhouse gas (GHG) emissions of spring cereal monoculture under long-term conventional tillage (CT) and no-till (NT) treatment established in 2018 were measured in a peatland in Southwestern Finland during the period 2018–2021. Nitrous oxide (N₂O), carbon dioxide (CO₂) and methane (CH₄) fluxes were measured with chambers approximately every two weeks throughout the period under study. Net ecosystem exchange was measured during the growing seasons, and hourly ecosystem respiration (ER) and gross photosynthesis (GP) were modelled with empirical models. Across the whole period, annual emissions were 6.8 ± 1.2 and 5.7 ± 1.2 Mg CO₂–C ha ⁻¹ yr⁻¹ (net ecosystem carbon balance), 8.8 ± 2.0 and 7.1 ± 2.0 kg N₂O–N ha⁻¹ yr⁻¹, and − 0.43 ± 0.31 and − 0.40 ± 0.31 kg CH₄-C ha⁻¹ yr⁻¹ for CT and NT, respectively. The global warming potential was lower in NT (p = 0.045), and it ranged from 26 to 34 Mg CO₂ eq. ha⁻¹ yr⁻¹ in CT and from 19 to 31 Mg CO₂ eq. ha⁻¹ yr⁻¹ in NT. The management effect on the rates of single GHGs was not consistent over the years. Higher GP was found in CT in 2019 and in NT in 2020. Differences in ER between treatments occurred mostly outside the growing season, especially after ploughing, but the annual rates did not differ statistically. NT reduced the N₂O emissions by 31% compared to CT in 2020 (p = 0.044) while there were no differences between the treatments in other years. The results indicate that NT may have potential to reduce slightly CO₂ and N₂O emissions from cultivated peat soil, but the results originate from the first three years after a management change from CT to NT, and there is still a lack of long-term results on NT on cultivated peat soils.

2018年至2021年期间，在芬兰西南部的泥炭地测量了2018年建立的长期常规耕作（CT）和免耕（NT）处理下春季谷物单一栽培的温室气体（GHG）排放量。在整个研究期间，大约每两周用室测量一氧化二氮（N ₂ O）、二氧化碳（CO ₂）和甲烷（CH ₄ ）通量。在生长季节测量净生态系统交换，并用经验模型对每小时生态系统呼吸（ER）和总光合作用（GP）进行建模。整个时期，年排放量分别为 6.8 ± 1.2 和 5.7 ± 1.2 Mg CO ₂ –C ha ⁻¹ yr ⁻¹（净生态系统碳平衡）、8.8 ± 2.0 和 7.1 ± 2.0 kg N ₂ O–N ha ⁻¹ yr CT 和 NT 分别为^-1、 - 0.43 ± 0.31 和 - 0.40 ± 0.31 kg CH ₄ -C ha ^-1 yr ^-1 。 NT 地区的全球变暖潜力较低 (p = 0.045)，范围为 26 至 34 Mg CO ₂当量。 CT 中的ha ^-1 yr ^-1和 19 至 31 Mg CO ₂当量。NT 中的ha ⁻¹ yr ⁻¹ 。多年来对单一温室气体排放率的管理效果并不一致。 2019 年 CT 和 2020 年 NT 的 GP 较高。处理之间 ER 的差异主要发生在生长季节之外，尤其是耕作后，但年率没有统计学差异。 2020 年， NT 与 CT 相比，N ₂ O 排放量减少了 31% (p = 0.044)，而其他年份的处理之间没有差异。结果表明，NT 可能具有略微减少耕作泥炭土 CO ₂和 N ₂ O 排放的潜力，但结果源于从 CT 管理转变为 NT 后的前三年，并且仍然缺乏长期的研究。耕作泥炭土上 NT 的长期结果。