农业环境科学学报2025，Vol.44Issue(4)：1014-1028,15.DOI:10.11654/jaes.2024-0510
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
摘要
Abstract
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 p H 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.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Key words
organic fertilization/land use type/soil property/soil fertility/organic carbon fraction分类
农业科技引用本文复制引用
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):1014-1028,15.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) （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)Nanjing Institute of Environmental Sciences,MEE"Yangtze River Delta Ecological Environment Integrated Protection"Research Institute Program(ZX2022QT043) （ZX2024SZY053）
Nanjing Institute of Environmental Sciences,MEE "Carbon Peak and Neutrality"Research Institute Project(ZX2024SZY053) （ZX2024SZY053）
