| 朱文彬,张慧,张龙江,苏良湖,欧阳爽,刘臣炜,王磊.有机施肥对不同植物类土壤肥力与碳库的影响[J].农业环境科学学报,2025,44(4):1014-1028. |
| 有机施肥对不同植物类土壤肥力与碳库的影响 |
| Effects of organic fertilization on soil fertility and carbon pool of different plant species |
| 投稿时间：2024-06-18 |
| DOI：10.11654/jaes.2024-0510 |
| 中文关键词: 有机施肥 土地利用方式 土壤性状 土壤肥力 有机碳组分 |
| 英文关键词: organic fertilization land use type soil property soil fertility organic carbon fraction |
| 基金项目:生态环境部南京环境科学研究所“长三角生态环境保护一体化”研究院项目（ZX2022QT043）；生态环境部南京环境科学研究所“碳达峰碳中和”研究院项目（ZX2024SZY053） |
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| 中文摘要: |
| 为探讨有机施肥对不同土地利用方式土壤肥力与有机碳库的影响，本研究选取长三角地区典型稻田、茶园和菜地为研究对象，分析有机施肥模式对不同土地利用方式下不同深度土壤肥力与有机碳组分的影响。结果表明，施肥主要影响0~20 cm土层的土壤性状。相较于无机施肥，有机施肥下，稻田土壤速效磷和铵态氮，以及茶园土壤有机质含量均显著增加。采用 Fuzzy法对不同土地利用方式下土壤肥力的评价结果表明，有机施肥有助于改善稻田土壤肥力，有机无机配施的菜地土壤肥力处于中等水平。有机施肥对茶园土壤肥力的影响结果不一致，可能是因为相较于无机肥处理，有机 1处理显著降低土壤 NO3--N（0~20 cm 和40~60 cm）、Olsen-P（0~20 cm和40~60 cm）、SOC（40~60 cm）和TN（40~60 cm）含量，而有机3处理显著增加了SOC（0~20 cm和20~40 cm）和TN（0~20 cm）含量。稻田和茶园土壤肥力提升的主要限制因子依次为速效氮、速效磷和有机质，而pH是影响菜地土壤肥力的主要指标。有机质、总氮和速效氮分别是对稻田、茶园和菜地土壤综合肥力贡献最大的因子。此外，不同施肥模式显著增加稻田、茶园和菜地0~20 cm土壤颗粒态有机碳和矿物结合态有机碳含量，其中长期施用有机肥（22 a）显著提高茶园土壤矿物结合态有机碳含量。综上所述，有机施肥有助于改善稻田土壤肥力，提升稻田和茶园土壤碳库，但对茶园土壤肥力的影响仍待进一步探究。此外，有机无机配施的菜地土壤存在酸化风险。因此，针对不同土地利用方式土壤肥力改善与碳库提升需因地施策。 |
| 英文摘要: |
| To investigate the effects of organic fertilization on soil fertility and organic carbon stocks under various land uses, this study focused on typical paddy fields, tea gardens, and vegetable plots in the Yangtze River Delta, assessing how organic fertilization influenced soil fertility and organic carbon fractions at different soil depths. Our results showed that fertilization predominantly affected the top 0-20 cm soil layer. Organic fertilization significantly enhanced available phosphorus and ammonium nitrogen in paddy soils and organic matter in tea garden soils compared to inorganic fertilization. Fertility evaluations using the Fuzzy method revealed that organic fertilization improved paddy soil fertility, while vegetable plots with combined organic and inorganic fertilization showed moderate fertility. The impact of organic fertilization on tea garden fertility was mixed. Specifically, the organic 1 treatment reduced NO3--N, Olsen-P, SOC, and TN at various depths, whereas the organic 3 treatment increased SOC and TN in the top layers. The critical factors constraining fertility in paddy fields and tea gardens were identified as available nitrogen, phosphorus, and organic matter, while pH was a key determinant for vegetable plots. Notably, organic matter, total nitrogen, and available nitrogen were the most influential factors for soil fertility in paddy fields, tea gardens, and vegetable plots. Organic fertilization also significantly boosted dissolved and mineral-bound organic carbon in the 0-20 cm layer across all land uses, with long-term organic application particularly enhancing mineral-bound organic carbon in tea gardens. In conclusion, organic fertilization benefits paddy soil fertility and carbon sequestration in paddy and tea garden soils, yet its effect on tea garden fertility requires further investigation. Combined organic and inorganic fertilization in vegetable plots poses a risk of soil acidification. Tailored strategies are essential for enhancing soil fertility and carbon stocks under different land uses. |
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