Kinetics of inorganic and organic phosphorus release influenced by low molecular weight organic acids in calcareous, neutral and acidic soils
文献类型：期刊论文
| 作者 | Lu, Caiyan2; Cao, Yanhong1,2; Quan, Zhi1,2; Shi, Yi2; Wang, Yongzhuang1,2; Chen, Xin2; Whalen, Joann K.3 |
| 刊名 | JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 178期号:4页码:555-566 |
| 关键词 | Citric Acid Oxalic Acid Malic Acid Organic Acid Ligands Soil Phosphorus Fractions |
| ISSN号 | 1436-8730 |
| DOI | 10.1002/jpln.201500047 |
| 英文摘要 | Low molecular weight organic acids exuded by plants roots enhance inorganic P-i release into soil solution and thereby increases plant-available Pi in soils. Low molecular weight organic acids may also induce organic P (P-o) release into soil solution, but kinetics of both Pi and Po displacement from the soil matrix into soil solution of agricultural soils is poorly understood, and the mechanism for P-o release is not well explained. This study used kinetic experiments to determine the concentrations and release rates of P-i and P-o induced by oxalic acid, citric acid, and malic acid in calcareous, neutral and acidic soils. Kinetic data were well described by Elovich (r(2)= 0.801-0.993, P < 0.001) and power functions models (r(2) = 0.721-0.977, P < 0.001). Low molecular weight organic acids at 10 mmol kg(-1) soil induced the exponential release of both P-i and P-o, which reached a plateau approx. 480- 2,880 min after the start of the experiment. Cumulative P-o release induced by low molecular weight organic acids was ranked as oxalic acid (0.63-3.17 mg kg(-1)) > citric acid (0.61-2.82 mg kg(-1)) > malic acid (0.52-1.76 mg kg(-1)) and mainly resulted from the release of labile P-o (NaHCO3-P-o) regardless of soil type. By contrast, oxalic acid was most effective in enhancing P-i release from the HCl-P-i (Ca-P-i) fraction of the calcareous soil, and citric acid was most effective in releasing P-i from the NaOH-P-i (Fe/Al-P-i) fraction of the neutral and acidic soils. Therefore, the mechanism for the kinetics of P-o release induced by low molecular weight organic acids is ascribed to their ability to mobilize the labile P-o (NaHCO3-P-o) rather than their ability to chelate cations (i.e., Fe3+, Al3+) bound to P-o in soil. |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000359062700002 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://210.72.129.5/handle/321005/122151]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Shi, Yi |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 3.McGill Univ, Dept Nat Resource Sci, Ste Anne De Bellevue, PQ H9X 3V9, Canada |
| 推荐引用方式 GB/T 7714 | Lu, Caiyan,Cao, Yanhong,Quan, Zhi,et al. Kinetics of inorganic and organic phosphorus release influenced by low molecular weight organic acids in calcareous, neutral and acidic soils[J]. JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,2015,178(4):555-566. |
| APA | Lu, Caiyan.,Cao, Yanhong.,Quan, Zhi.,Shi, Yi.,Wang, Yongzhuang.,...&Whalen, Joann K..(2015).Kinetics of inorganic and organic phosphorus release influenced by low molecular weight organic acids in calcareous, neutral and acidic soils.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,178(4),555-566. |
| MLA | Lu, Caiyan,et al."Kinetics of inorganic and organic phosphorus release influenced by low molecular weight organic acids in calcareous, neutral and acidic soils".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 178.4(2015):555-566. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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