Molecular-Level Insights into Phosphorus Transformation Mechanisms in Entisol Soils under Multiple Long-Term Fertilization Regimes
文献类型：期刊论文
| 作者 | Liu, J ; Han, CQ; Zhao, YH; Yang, DL; Yang, JJ; Zheng, L; Hu, YF; Li, JM; Sui, P; Chen, YQ
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| 刊名 | AGRONOMY-BASEL
 |
| 出版日期 | 2022 |
| 卷号 | 12期号:11页码:2760 |
| 关键词 | manure nitrogen deficiency NMR XANES straw return |
| DOI | 10.3390/agronomy12112760 |
| 文献子类 | Article |
| 英文摘要 | Improving phosphorus (P) fertilization strategies benefits mitigating future global P shortage and reducing legacy P loss risk in agricultural lands. In this study, the molecular transformation mechanisms of P in Entisol soils under multiple long-term fertilization regimes including PK; NK; NPK; NPK with pig manure (NPKM); and NPK with rice straw return (NPKS) were investigated by sequential fractionation (SF), synchrotron-based P K-edge X-ray absorption near-edge structure (P-XANES) and solution P-31 nuclear magnetic resonance (P-NMR) spectroscopy. Compared with conventional NPK fertilization, a higher accumulation of total P occurred in soils under the PK, NPKM and NPKS treatments. By SF, there were relatively higher contents of NaHCO3-extracted inorganic P (P-i) fractions for the soils under PK (52.5 mg/kg) and NPKM (35.5 mg/kg) fertilization relative to the NPK (23.3 mg/kg) treatment. Consistently, P-XANES analysis revealed that there was a higher proportion of brushite, as a bioavailable P form, in soil under the PK and NPKM treatments compared with the NPK treatment, indicating higher P availability in the Entisol soils under PK and NPKM fertilizations. By P-NMR, long-term PK fertilization resulted in relatively a higher ratio of orthophosphate diesters to orthophosphate monoesters after correction compared with the NPK fertilization, which strongly suggested that N deficiency enhanced the biodegradability of soil organic P (P-o) pools, thus providing new molecular-level insights into soil P-o transformation. Collectively, these results, obtained from a long-term experimental study, facilitates the comprehensive understanding of P availability and transformation mechanisms in Entisol soils under multiple fertilization regimes, and thus benefits the improvement of fertilization strategies in agricultural soils. |
| 电子版国际标准刊号 | 2073-4395 |
| 语种 | 英语 |
| WOS记录号 | WOS:000894325900001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299156]  |
| 专题 | 高能物理研究所_多学科研究中心 中国科学院高能物理研究所_中国散裂中子源 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, J,Han, CQ,Zhao, YH,et al. Molecular-Level Insights into Phosphorus Transformation Mechanisms in Entisol Soils under Multiple Long-Term Fertilization Regimes[J]. AGRONOMY-BASEL,2022,12(11):2760. |
| APA | Liu, J.,Han, CQ.,Zhao, YH.,Yang, DL.,Yang, JJ.,...&Ma, YB.(2022).Molecular-Level Insights into Phosphorus Transformation Mechanisms in Entisol Soils under Multiple Long-Term Fertilization Regimes.AGRONOMY-BASEL,12(11),2760. |
| MLA | Liu, J,et al."Molecular-Level Insights into Phosphorus Transformation Mechanisms in Entisol Soils under Multiple Long-Term Fertilization Regimes".AGRONOMY-BASEL 12.11(2022):2760. |
入库方式： OAI收割
来源：高能物理研究所
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