The effect of 34-year continuous fertilization on the SOC physical fractions and its chemical composition in a Vertisol

Reports regarding the effects of long-term organic and inorganic fertilization on the quantity and quality of soil organic carbon (SOC), particularly in Vertisols, are scarce. In this study, we combined SOC physical fractionation with 13 C NMR spectroscopy technology to investigate the effect of 34...

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Bibliographic Details
Published in:Scientific reports 2019-02, Vol.9 (1), p.2505-2505, Article 2505
Main Authors: Guo, Zichun, Zhang, Zhongbin, Zhou, Hu, Wang, Daozhong, Peng, Xinhua
Format: Article
Language:English
Subjects:
140/131
704/158/2456
704/47/4113
Chemical composition
Fertilization
Fertilizers
Humanities and Social Sciences
Magnetic resonance spectroscopy
Manures
multidisciplinary
NMR
Nuclear magnetic resonance
Organic soils
Phosphorus
Science
Science (multidisciplinary)
Straw
Vertisols
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Summary:Reports regarding the effects of long-term organic and inorganic fertilization on the quantity and quality of soil organic carbon (SOC), particularly in Vertisols, are scarce. In this study, we combined SOC physical fractionation with 13 C NMR spectroscopy technology to investigate the effect of 34 years of continuous fertilization on the SOC physical fractions and its chemical composition of 0–20 cm soil layer in a Vertisol. This study consisted of six treatments: no fertilization (control), chemical nitrogen, phosphorus and potassium fertilizers (NPK), low and high amounts of straw with chemical fertilizers (NPKLS and NPKHS), and pig or cattle manure with chemical fertilizers (NPKPM and NPKCM). Over 34 years of continuous fertilization, the SOC sequestration rate was from 0.08 Mg C ha −1 yr −1 in the control treatment to 0.66 Mg C ha −1 yr −1 in the NPKCM treatment, which was linearly related with the C input ( P  
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-38952-6