Phosphorus changes and sorption characteristics in a calcareous soil under long-term fertilization
文献类型：期刊论文
| 作者 | Guo, SL (Guo Sheng-Li)1,2 ; Dang, TH (Dang Ting-Hui)1 ; Hao, MD (Hao Ming-De)2 |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2008 |
| 卷号 | 18期号:2页码:248-256 |
| 关键词 | calcareous soil long-term fertilization P accumulation P sorption P transformations |
| 通讯作者 | Guo, SL |
| 英文摘要 | Knowledge of phosphorus (P) behavior in long-term fertilized soils is essential for programming fertilization practices and for sustaining environmental quality. The long-term (1984-1997) effects of various fertilization treatments on P changes and sorption isotherms as well as the relationship of soil properties to P sorption and P forms were evaluated in an Ustic Isohumisol, a calcareous soil, on the Loess Plateau, China. Compared to 1984, after 13 years of crop production, total soil P in the no-P treatments (control and N treatment) decreased by 5%-7%, but in the phosphorus fertilizer alone (P), nitrogen and phosphorus fertilizers in combination (NP), manure alone (M), and nitrogen and phosphorus fertilizers and manure in combination (NPM) treatments, it increased by 22%, 19%, 28%, and 58%, respectively. Residual fertilizer P was found mainly in NH(4)Ac-soluble P (Ca(8)-P), followed by NaHCO(3)-soluble P (NaHCO(3)-P), and NH(4)F-soluble P (AI-P). Phosphorus sorption in the soils with different fertilization practices fit the Langmuir equations. Phosphorus sorption capacity in the no-P treatments increased, whereas it decreased in the P-included treatments (P, NP, and NPM treatments). Phosphorus sorption maximum (Q.) was significantly and negatively correlated to inorganic P including NaHCO(3)-P, Ca(8)-P, NaOH-Na(2)CO(3)-soluble P (Fe-P), and Al-P (P <= 0.01). Moreover, long-term fertilization increased soil organic carbon in the NP, M, and NPM treatments and decreased pH in the NP and NPM treatments. Thus, the ability of the soil to release sorbed P to the environment increased under long-term P fertilization. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2012-06-14 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/4839]  |
| 专题 | 水土保持研究所_水保所知识产出(1956-2013) |
| 推荐引用方式 GB/T 7714 | Guo, SL ,Dang, TH ,Hao, MD . Phosphorus changes and sorption characteristics in a calcareous soil under long-term fertilization[J]. PEDOSPHERE,2008,18(2):248-256. |
| APA | Guo, SL ,Dang, TH ,&Hao, MD .(2008).Phosphorus changes and sorption characteristics in a calcareous soil under long-term fertilization.PEDOSPHERE,18(2),248-256. |
| MLA | Guo, SL ,et al."Phosphorus changes and sorption characteristics in a calcareous soil under long-term fertilization".PEDOSPHERE 18.2(2008):248-256. |
入库方式： OAI收割
来源：水土保持研究所
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