化肥减量配施生物炭对土壤有机碳含量及化学结构性组分的影响

doi:10.13292/j.1000-4890.202609.041

生态学杂志 ›› 2026, Vol. 45 ›› Issue (9): 2942-2951.doi: 10.13292/j.1000-4890.202609.041

化肥减量配施生物炭对土壤有机碳含量及化学结构性组分的影响

廖亦阳^1,2,彭家豪^1,2，林偲妍³，陈梅春⁴，杨文文³，叶丽萍³，曾瑜⁵，王维奇^1,2*

(¹福建师范大学湿润亚热带生态-地理过程教育部重点实验室，福州 350117； ²福建师范大学地理研究所，福州 350117； ³福州经济作物技术站，福州 350001； ⁴福建省农业科学院资源环境与土壤肥料研究所，福州 350003； ⁵闽榕茶业有限公司，福州 350018)

出版日期:2026-09-10 发布日期:2026-09-07

Effects of reduced chemical fertilizer application combined with biochar on the content and chemical structure of soil organic carbon.

LIAO Yiyang^1,2, PENG Jiahao^1,2, LIN Siyan³, CHEN Meichun⁴, YANG Wenwen³, YE Liping³, ZENG Yu⁵, WANG Weiqi^1,2*

(¹Key Laboratory of Humid Subtropical Ecogeographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350117, China; ²Institute of Geography, Fujian Normal University, Fuzhou 350117, China; ³Fuzhou Economic Crops Technical Station, Fuzhou 350001, China; ⁴Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China; ⁵Minrong Tea Co., Ltd., Fuzhou 350018, China).

Online:2026-09-10 Published:2026-09-07

摘要/Abstract

摘要： 优化农业生态系统田间管理措施，可有效促进土壤有机碳的固定，从而减缓温室气体排放并改善土壤质量。为阐明化肥减量与生物炭施加对茉莉种植土壤有机碳(SOC)组分及其化学结构特征的影响，本研究在福州茉莉园开展田间实验，设置对照(CK)、化肥减量(FR)、单施生物炭(BA)、化肥减量配施生物炭处理(FRBA)，分析了SOC组分含量及化学结构组成。结果表明：（1）相比于CK，FRBA和BA处理的惰性有机碳(ROC)含量分别增加167.1%和101.3%，SOC含量分别增加57.8%和28.2%(P<0.05)；BA处理下土壤可溶性有机碳(DOC)增加42.6%(P<0.05)；（2）相比于CK，FR、BA以及FRBA处理均改善土壤有机碳化学结构稳定性和疏水性，烷氧碳相对强度显著降低了76.4%、69.5%和89.4%，酚醇化合物相对强度显著提高了98.7%、81.6%和114.5%(P<0.05)；（3）FRBA处理显著提高了土壤有机碳的芳香度、脂化度和总指数(P<0.05)；（4）土壤有机碳组分含量和化学结构与土壤理化性质存在显著相关，其中pH和电导率均与SOC、DOC和ROC含量呈显著正相关(P<0.05)。综上，化肥减量配施生物炭增加了土壤有机碳库，提高了土壤有机碳化学结构性稳定组分。本研究对茉莉园土壤有机碳提升具有重要启示意义。

关键词: 化肥减量, 生物炭, 土壤有机碳组分, 土壤有机碳结构, 茉莉园

Abstract: Optimizing field management practices in agricultural ecosystems can effectively enhance soil organic carbon sequestration, mitigate greenhouse gas emission, and improve soil quality. We examined the effects of chemical fertilizer reduction and biochar application on the components and chemical structure of soil organic carbon (SOC) in a jasmine garden in Fuzhou. There were four treatments in the experiment, including control (CK), reduced chemical fertilizer application (FR), biochar application (BA), and reduced chemical fertilizer application combined with biochar application (FRBA). We measured the content of SOC components and their chemical structure. The results showed that: (1) The FRBA and BA treatments increased recalcitrant organic carbon (ROC) content by 167.1% and 101.3%, and SOC content by 57.8% and 28.2%, respectively (P<0.05). Furthermore, the BA treatment resulted in a 42.6% increase in soil dissolved organic carbon (DOC) (P<0.05). (2) The FR, BA, and FRBA treatments all improved the chemical structural stability and hydrophobicity of soil organic carbon, as indicated by the significant reductions in the relative abundance of o-alkyl carbon (by 76.4%, 69.5%, and 89.4%, respectively) and the significant increases in the relative abundance of phenolic alcohol (by 98.7%, 81.6%, and 114.5%, respectively) (P<0.05). (3) The FRBA treatment significantly increased the aromaticity, lipidization, and total index of soil organic carbon (P<0.05). (4) There were significant correlations between soil organic carbon components, chemical structure, and soil physicochemical properties. Both pH and electrical conductivity were significantly and positively correlated with the contents of SOC, DOC, and ROC (P<0.05). In conclusion, the combined application of reduced chemical fertilizer and biochar increased soil organic carbon pool and enhanced the proportion of stable chemical structural components in SOC. This study provides significant implications for the enhancement of soil organic carbon in jasmine plantations.

Key words: chemical fertilizer reduction, biochar, soil organic carbon component, soil organic carbon structure, jasmine plantation

廖亦阳, 彭家豪, 林偲妍, 陈梅春, 杨文文, 叶丽萍, 曾瑜, 王维奇. 化肥减量配施生物炭对土壤有机碳含量及化学结构性组分的影响[J]. 生态学杂志, 2026, 45(9): 2942-2951.

LIAO Yiyang, PENG Jiahao, LIN Siyan, CHEN Meichun, YANG Wenwen, YE Liping, ZENG Yu, WANG Weiqi. Effects of reduced chemical fertilizer application combined with biochar on the content and chemical structure of soil organic carbon.[J]. Chinese Journal of Ecology, 2026, 45(9): 2942-2951.

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化肥减量配施生物炭对土壤有机碳含量及化学结构性组分的影响

Effects of reduced chemical fertilizer application combined with biochar on the content and chemical structure of soil organic carbon.

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