Influences of phosphate nutritional level on the phytoavailability and speciation distribution of cadmium and lead in soil
文献类型：期刊论文
| 作者 | Chen, S; Sun, TH; Sun, LN; Zhou, QX; Chao, L; Sun, TH, Chinese Acad Sci, Key Lab Terr Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
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| 出版日期 | 2006 |
| 卷号 | 18期号:6页码:1247-1253 |
| ISSN号 | 1001-0742 |
| 关键词 | Phosphate Phytoavailability Speciation Distribution Cadmium Lead |
| 英文摘要 | A pot experiment was conducted to examine the influence of phosphate levels on the phytoavailability and speciation distribution of cadmium (Cd), lead (Pb) in soil. Spring wheat (Triticum aestivum L.) was selected as the tested plant. There were 5 phosphate fertilizer(Ca((HO4)-O-2)(2)) levels including 0, 50, 100, 200, and 400 Mg P2O5/kg Soil, marked by P0, P1, P2, P3, and P4, respectively. CdCl2 center dot 2.5H(2)O and Pb(NO3)(2) were added to soil as the following levels: Cd + Pb = 25+0, 0+1000, and 25+1000 mg/kg, marked by T1, T2, and T3, respectively. The results showed that the P fertilizer promoted the dry weight of wheat in all treatments and alleviated the contamination induced by Cd and Pb. With increasing levels of the additional P fertilizer, Cd concentration in. different parts (root, haulm, chaff and grain) of wheat decreased at the PI level at first and then increased. The soluble plus exchangeable (SE) fraction of Cd in soil decreased at the P1 level and then increased from P2 to P4 levels. The moderate P fertilizer reduced the phytoavailability of Cd. The application of P could obviously restrain the uptake of Pb by wheat and there were significantly negative correlations between the levels of P and the uptake of Pb. Phosphorus supply resulted in a decrease in the SE fraction of Pb and there was a significantly negative correlation between the levels of P and the SE fraction of Pb in soil. All the levels of the P fertilizer in this experiment could reduce the phytoavailability of Pb. Thus, it is feasible to apply the P fertilizer (Ca(H2PO4)(2)) to Pb contaminated soils. However, the levels of P application should be restricted in case that redundant P may increase the phytoavailability of Cd. |
| 学科主题 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000242222400036 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54833]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Sun, TH, Chinese Acad Sci, Key Lab Terr Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, S,Sun, TH,Sun, LN,et al. Influences of phosphate nutritional level on the phytoavailability and speciation distribution of cadmium and lead in soil[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2006,18(6):1247-1253. |
| APA | Chen, S,Sun, TH,Sun, LN,Zhou, QX,Chao, L,&Sun, TH, Chinese Acad Sci, Key Lab Terr Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China.(2006).Influences of phosphate nutritional level on the phytoavailability and speciation distribution of cadmium and lead in soil.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,18(6),1247-1253. |
| MLA | Chen, S,et al."Influences of phosphate nutritional level on the phytoavailability and speciation distribution of cadmium and lead in soil".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 18.6(2006):1247-1253. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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