再生栽培（リトゥーン）を活用した温室効果ガス排出削減
Harnessing Ratoon Cropping for Mitigating Greenhouse Gas Emissions (原題)
Xin Zhang, Hai Huang, Zengqiang Li, Xiangjun Kong, Aziz Khan, Yanbo Zhang
🤖 gxceed AI 要約
日本語
本総説は、リトゥーン（再生）栽培がGHG排出を削減する可能性を、イネ科作物と乾燥地作物（サトウキビ、ソルガム、綿、キマメ）にわたり整理する。前作の根系を活用し整地・播種・移植を省くことで、GHGIを7.9〜17.3%、N2Oを40.4〜78.1%削減しうる。施肥・水管理・IPM・遺伝的改良を統合した枠組みを提示し、トレードオフとエビデンスの空白も明示する。
English
This review synthesizes how ratoon cropping can cut agricultural GHG emissions across rice and dryland crops (sugarcane, sorghum, cotton, pigeon pea). Reusing the previous root system avoids land prep, sowing, and transplanting, reducing GHG intensity by 7.9–17.3% and N2O by 40.4–78.1%. It offers an integrated framework linking crop physiology, soil carbon, agronomy, and genetics, while flagging trade-offs and evidence gaps.
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
日本では農業分野のGXはScope 3・サプライチェーン排出量や食品企業の開示と結びつく。本稿は農産物調達に伴う排出削減策として、食品・商社のScope 3上流管理や農業由来クレジット検討に示唆を与える。
In the global GX context
Agriculture is a material Scope 3 upstream category under GHG Protocol and increasingly under CSRD/ISSB disclosure. This review's mitigation levers (ratoon systems, reduced fertilizer, water management) offer a menu for food and agri-supply-chain decarbonization targets, though it does not engage disclosure frameworks directly.
👥 読者別の含意
🔬研究者:農業GHG削減の統合的枠組みとエビデンスギャップを整理した総説として、土壌炭素・作物生理・遺伝改良の接点研究に有用。
🏢実務担当者:農産物調達のScope 3上流排出削減策として、再生栽培・施肥最適化・水管理の選択肢を検討する材料になる。
🏛政策担当者:農業由来GHG削減策の設計や、農業クレジット・環境直接支払いの根拠として参照可能。
📄 Abstract（原文）
Ratoon cropping systems have gained increasing attention for their potential to mitigate greenhouse gas (GHG) emissions, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). Building on the well-established root system of the previous crop, ratoon crops require no land preparation, sowing, or transplanting and need less fertilizer, water, and pesticides than annual crops while achieving earlier harvests, thereby reducing GHG emission intensity (GHGI) by 7.9–17.3% and N2O emissions by 40.4–78.1%. Reduced fertilization, efficient water management, and integrated pest management can further curtail GHG emissions, while improved soil fertility, sustainable land management, and cover crop integration enhance soil carbon sequestration. Genetic improvement of ratoon crops can additionally enhance stress tolerance and resource use efficiency, reducing fertilizer requirements and ultimately lowering GHG emissions. This review also addresses ratoon cropping in dryland systems, including sugarcane, sorghum, cotton, and pigeon pea, highlighting their distinct GHG emission profiles and mitigation potential. Its innovative contribution is an integrated framework—synthesizing crop physiology, soil carbon processes, agronomic management, and genetic improvement—that evaluates GHG mitigation opportunities across both ratoon rice and dryland ratoon crops while explicitly addressing trade-offs, context-dependency, and evidence gaps.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/biology15191751first seen 2026-10-04 04:51:25
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