Balancing growth, resource efficiency and soil greenhouse gas emissions: optimal water-fertilizer coupling for Chukrasia tabularis seedlings
成長、資源効率、土壌温室効果ガス排出のバランス：Chukrasia tabularis実生苗の最適な水・肥料カップリング (AI 翻訳)
Hongting Quan, Jie Lu, Shucai Zeng, Shuangshuang Chu
🤖 gxceed AI 要約
日本語
亜熱帯地域のChukrasia tabularis実生苗を対象に、3段階の土壌水分と4段階の肥料量の組み合わせ実験を実施。55%圃場容水量と12g pot⁻¹肥料の処理が、成長促進、資源効率、CH₄排出削減の最適バランスを示した。過剰な灌水は根の低酸素と養分溶脱を招き、肥料効果を無効化することが明らかになった。
English
A pot experiment on Chukrasia tabularis seedlings in subtropical conditions tested three soil moisture levels and four fertilizer rates. The combination of 55% field capacity and 12 g pot⁻¹ fertilizer achieved the best balance among growth, nutrient use efficiency, and CH₄ emission reduction. Excessive watering caused root hypoxia and nutrient leaching, negating fertilizer benefits.
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
本研究成果は亜熱帯林業における灌溉・施肥の最適化に寄与するが、日本の温帯林業への直接応用は限定的。ただし、森林土壌からの温室効果ガス排出削減という観点では、日本における施業管理にも示唆を与える可能性がある。
In the global GX context
This paper provides empirical evidence on optimizing water and fertilizer to reduce soil GHG emissions while improving growth in tree plantations. It contributes to global sustainable forestry and climate-smart agriculture practices, particularly in subtropical regions.
👥 読者別の含意
🔬研究者:The PCA-EWM-TOPSIS method offers a framework for multi-objective optimization in plant-soil systems, and the interaction effects between water and fertilizer inform future experimental design.
🏢実務担当者:Forestry managers can use the 55% field capacity + 12g pot⁻¹ fertilizer combination to improve seedling growth and reduce fertilizer waste, though validation in field conditions is needed.
📄 Abstract（原文）
Excessive and unregulated management of water and fertilizer limits the productivity of Chukrasia tabularis ( C. tabularis ) plantations in subtropical regions. A two-factor factorial potted experiment was conducted using one-year-old C. tabularis seedlings. Three soil water content levels (95%, 75%, and 55% field capacity) and four compound fertilizer rates (0, 6, 12, and 18 g pot −1 ) were established, with the treatment of 75% field capacity and 0 g pot −1 fertilizer serving as the control (CK). Soil water content emerged as the dominant factor controlling C. tabularis seedling growth; furthermore, water and fertilizer exhibited a highly significant interaction effect on total biomass and root dry weight ( p < 0.001). At the 12 g pot −1 fertilizer rate, seedlings grown at 55% field capacity produced 35% more total biomass than those at 75% field capacity, and 224% more than CK. It also raised root dry weight by 32% over the control. But 95% field capacity reduced growth under all fertilizer treatments. Under the 55% field capacity condition, nitrogen and potassium accumulation at the 12 g pot −1 fertilizer rate increased by 701% and 318%, respectively, compared to CK. In contrast, the 95% field capacity condition caused severe root hypoxia and nutrient leaching, effectively negating the benefits of fertilization and leading to negative apparent fertilizer use efficiency for phosphorus and potassium. At 55% field capacity, the observed CH 4 patterns suggested a potential shift from net emission to net uptake under selected treatments. A combined PCA-EWM-TOPSIS model demonstrated that a field capacity of 55% combined with 12 g pot −1 compound fertilizer achieved an optimal balance among growth benefits, resource use efficiency, and ecological trade-offs.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3389/ffgc.2026.1914270first seen 2026-07-27 06:09:48
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