| 岑沅珊,童非,周俊康,王羽茜,樊广萍,李江叶,孙福新,周聪,陈金林,高岩.镁镧改性菌丝体渣生物质炭基肥的制备及其氮磷缓释性能[J].农业环境科学学报,2026,45(9):2383-2396. |
| 镁镧改性菌丝体渣生物质炭基肥的制备及其氮磷缓释性能 |
| Preparation of Mg/La modified mycelium residue biochar-based fertilizer and its slow-release performance for nitrogen and phosphorus |
| 投稿时间：2025-11-11 |
| DOI：10.11654/jaes.2025-1022 |
| 中文关键词: 镁-镧改性 生物质炭基肥 缓释性能 菌丝体渣 氮磷 |
| 英文关键词: Mg/La modification biochar-based fertilizer slow-release performance mycelial residue nitrogen and phosphorus |
| 基金项目:江苏省重点研发计划（现代农业）项目（BE2023312）；江苏省农业科技自主创新资金项目（CX（24）1001） |
| 作者 | 单位 | E-mail | | 岑沅珊 | 南京林业大学南方现代林业协同创新中心, 南京 210037
江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | | | 童非 | 江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | tongfei@jaas.ac.cn | | 周俊康 | 南京林业大学南方现代林业协同创新中心, 南京 210037
江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | | | 王羽茜 | 江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | | | 樊广萍 | 江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | | | 李江叶 | 江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | | | 孙福新 | 江苏国信协联能源有限公司, 江苏 无锡 214200 | | | 周聪 | 江苏国信协联能源有限公司, 江苏 无锡 214200 | | | 陈金林 | 南京林业大学南方现代林业协同创新中心, 南京 210037 | jlchen@njfu.edu.cn | | 高岩 | 南京林业大学南方现代林业协同创新中心, 南京 210037
江苏省农业科学院农业资源与环境研究所/农业农村部长江下游平原农业环境重点实验室, 南京 210014 | |
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| 中文摘要: |
| 本研究旨在通过构建镁-镧双金属改性体系，在保持炭基肥高养分负载容量的同时，显著改善其磷释放性能。以柠檬酸发酵副产物菌丝体渣为原料，通过镁、镧单改性与复合改性制备系列生物质炭，并负载氮磷养分，制得相应的炭基肥（BCF、MgBCF、LaBCF、MgLaBCF）。通过准一级动力学、准二级动力学、Elovich及Weber-Morris粒子内扩散模型等，系统探究了不同pH下氮磷养分的释放动力学特征。结果表明，镁-镧复合改性炭基肥（MgLaBCF）在镁含量降低67.12%的条件下，仍具备优异的氮磷负载能力（氨氮56.72 mg·g-1、总磷232.30 mg·g-1）。动力学分析表明，MgLaBCF养分释放过程符合准二级动力学模型，表明化学作用是主导控速步骤。相较于磷释放迟缓的MgBCF，MgLaBCF通过构建鸟粪石与磷酸镁等多晶相结构，并显著提高活性磷组分比例，形成了“速效-缓释协同”的释放体系，其磷释放能力随着pH增加而提高，30 d磷累积释放率较MgBCF提升37.04%。MgLaBCF的氮磷释放特性符合国家缓释肥料标准（GB/T 23348—2009）。研究表明，镁-镧改性通过构建多晶相结构与调控磷形态，显著影响了MgLaBCF的氮磷负载容量与缓释性能。 |
| 英文摘要: |
| This study aims to significantly improve the phosphorus release performance of biochar-based fertilizers while maintaining their high nutrient-loading capacity by constructing a Mg-La bimetallic modification system. Using citric acid fermentation by-product mycelium residue as the raw material, a series of biochars were prepared through single modifications with Mg or La, as well as composite modification with both, followed by loading with nitrogen and phosphorus nutrients to obtain corresponding biochar-based fertilizers（BCF, MgBCF, LaBCF, MgLaBCF）. The release kinetic characteristics of nitrogen and phosphorus nutrients under different pH conditions were systematically investigated using first-order kinetics, second-order kinetics, Elovich, and Weber-Morris intraparticle diffusion models. The results showed that the Mg-La composite modified biochar-based fertilizer（MgLaBCF） still exhibited excellent nitrogen and phosphorus loading capacities（NH+4-N 56.72 mg·g-1, total phosphorus 232.30 mg·g-1）even when the Mg content was reduced by 67.12%. Kinetic analysis indicated that the nutrient release process followed a pseudo-second-order kinetic model, suggesting that chemical interactions were the dominant rate-limiting step. Compared to MgBCF, which exhibited slow phosphorus release, MgLaBCF formed a "rapid-slow synergistic" release system by constructing multi-crystalline phase structures such as struvite and magnesium phosphate, significantly increasing the proportion of active phosphorus components. Its phosphorus release capacity improved with increasing pH, and the cumulative phosphorus release rate after 30 days was 37.04% higher than that of MgBCF. The nitrogen and phosphorus release characteristics of MgLaBCF complied with the national standard for slow-release fertilizers（GB / T 23348—2009）. In summary, magnesium-lanthanum modification significantly influenced the nitrogen and phosphorus loading capacity and slow-release performance of MgLaBCF by constructing multi-crystalline phase structures and regulating phosphorus forms. |
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