Ridge Tillage Cultivation Reduced Greenhouse Gas Emissions in Cold-Region Paddy Fields
寒冷地水田における畦立て栽培による温室効果ガス排出削減 (AI 翻訳)
Junpeng Zhang, Yuxuan Jiangxu, Haicheng Zhao, Huifeng Sun, Jining Zhang, Cong Wang, Zheng Jiang, Hongyu Li, Xianxian Zhang, Sheng Zhou
🤖 gxceed AI 要約
日本語
中国東北部の寒冷地水田で、畦立て栽培（RC）が温室効果ガス（GHG）排出に及ぼす影響を2年間調査。RCは従来栽培と比較して収量を維持しつつメタン（CH4）排出を50～71%削減した。亜酸化窒素（N2O）に有意差はなく、総GHGの99%以上をCH4が占めた。畦立て栽培は寒冷地水田でのGHG削減に有効な手法であることが示された。
English
A two-year field experiment in cold-region paddy fields in Northeast China found that ridge tillage (RC) reduced methane (CH4) emissions by 50-71% compared to conventional cultivation while maintaining rice yield. Nitrous oxide (N2O) emissions showed no significant differences. Over 99% of total greenhouse gas emissions were from CH4. Ridge tillage is an effective practice for mitigating GHG emissions in cold-climate paddy fields.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の水田（特に北海道など寒冷地）でも同様の技術がGHG削減に有効か検討する材料となる。農業分野のJ-クレジット制度や温室効果ガスインベントリに貢献する可能性がある。ただし、中国東北部の条件下での結果であり、日本への直接適用にはさらなる検証が必要。
In the global GX context
Rice paddies are a major global source of methane. This study provides empirical evidence that ridge tillage can significantly reduce CH4 emissions without yield loss in cold regions, contributing to agricultural GHG mitigation strategies relevant for national inventories and NDCs. The findings support climate-smart farming practices.
👥 読者別の含意
🔬研究者:Provides empirical data on ridge tillage effects on GHGs in cold-region paddies, useful for modeling and developing mitigation strategies.
🏢実務担当者:Farmers and agricultural advisors may consider ridge tillage as a water-saving and emission-reducing cultivation method.
🏛政策担当者:Informs policies promoting climate-smart agriculture and could be referenced in agricultural GHG reduction plans.
📄 Abstract（原文）
Ridge tillage (RC) has been proposed as a water-saving irrigation technique to mitigate greenhouse gas (GHG) emissions from paddy fields. To evaluate its effectiveness under cold-region climatic conditions, a two-year field experiment (2023–2024) was conducted in Northeast China. The study assessed the effects of RC on rice yield, methane (CH4), nitrous oxide (N2O), and total GHG emissions (expressed as CO2e). A no-puddling treatment (NP) was additionally included in 2024. The results showed that compared to conventional cultivation (CK), RC significantly increased the number of effective panicles in 2023 (p < 0.05) but did not significantly affect yield in either year. CH4 emissions exhibited a double-peak pattern, with peaks at the heading and grain-filling stages; the heading stage contributed the largest part (53.1–69.0%). N2O emissions showed no distinct seasonal pattern, although N fertilization events stimulated N2O peak. RC consistently reduced CH4 emissions, with reductions of 50.8% in 2023 and 71.0% in 2024. NP in 2024 reduced CH4 emissions by 27.0%. N2O emissions showed no significant differences among treatments; however, their contribution from fertilization events varied with treatment and year. Total GHG was dominated by CH4 (>99%). RC significantly lowered GHG and GHGI by 50.7–70.1% and 57.9–73.2% compared to CK, respectively. In conclusion, ridge tillage is an effective practice to reduce CH4 and GHG emissions while maintaining rice yield in cold-region paddy fields. The large inter-annual variability strongly affects baseline emissions and underscores the needs for multi-year assessments.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3390/agriculture16101049first seen 2026-05-14 22:37:03
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