Organic fertilizer substitution in saline-alkali paddy fields: trade-offs among soil quality, greenhouse gas emissions, yield, and profitability
塩性アルカリ水田における有機肥料代替：土壌品質、温室効果ガス排出、収量、収益性のトレードオフ (AI 翻訳)
Shuang Liu, Shuoshuo Liang, Zheng Zhao, Wenya Hao, Shuai Gong, Min Zhang, Hua Wang, Qingnan Chu, Rongrong Wang, Huibin Li, Zhimin Sha
🤖 gxceed AI 要約
日本語
中国上海の塩性アルカリ水田で3シーズンの圃場試験を行い、化学肥料の50%有機代替（MF）が収量を維持しつつN2O排出を30.5%削減し、土壌品質と純環境経済便益を向上させることを示した。一方、100%代替（OF）はCH4排出を増加させ収量と利益を減少させた。部分的な有機代替がバランスの取れた管理戦略である。
English
A three-season field experiment in saline-alkali paddy fields in Shanghai, China, showed that 50% organic fertilizer substitution (MF) maintained rice yield, reduced N2O emissions by 30.5%, improved soil quality, and increased net environmental and economic benefits by 31.4%. Complete substitution (OF) increased CH4 emissions and reduced yield and profit, indicating partial substitution is a balanced strategy.
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
日本の水田農業における有機肥料利用やGHG削減策に示唆を与える。特に、塩害地域や環境保全型農業の推進に参考となる。
In the global GX context
Provides empirical evidence on trade-offs between GHG mitigation and yield in rice systems, relevant to global efforts on sustainable agriculture and climate-smart practices.
👥 読者別の含意
🔬研究者:農業分野のGHG排出削減と土壌管理のトレードオフに関する実証データを提供。
🏢実務担当者:有機肥料の部分代替が収量と環境性能のバランスに有効であることを示す。
🏛政策担当者:農業政策における有機肥料推進の効果と限界を理解するための根拠となる。
📄 Abstract（原文）
Balancing crop productivity with greenhouse gas (GHG) mitigation is a major challenge in saline-alkali rice systems. We conducted a three-season field experiment in Shanghai, China, to evaluate four fertilization regimes: no fertilizer (CK), full chemical fertilization (CT), 50% organic substitution (MF), and 100% organic substitution (OF). We quantified methane (CH 4 ) and Nitrous oxide (N 2 O) emissions, rice yield, soil properties, soil enzyme activities, soil quality index (SQI), and net environmental and economic benefits (NEEB). Relative to CT, organic substitution consistently lowered N 2 O emissions but increased CH 4 emissions. Across the study period, MF reduced cumulative N 2 O emissions by 30.50%, maintained rice grain yield, improved soil quality, and increased NEEB by 31.42%. OF further reduced N 2 O emissions by 48.65% but greatly stimulated CH 4 emissions and caused clear yield and profit penalties. The increase in CH 4 under organic substitution was associated with higher soil organic carbon and enzyme activity, whereas N 2 O emissions were closely related to soil inorganic N availability. Overall, MF provided the most balanced outcome among productivity, soil improvement, and environmental performance. These findings indicate that partial replacement of chemical fertilizer with organic fertilizer is a promising management strategy for saline-alkali paddy fields, whereas complete substitution is less suitable because the gains in N 2 O mitigation are offset by increased CH 4 emissions and lower agronomic performance.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3389/fpls.2026.1882006first seen 2026-07-16 07:19:10 · last seen 2026-07-29 06:32:55
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。