不同N素形态对落叶松苗木根/土界面pH值及养分有效性的影响
文献类型：期刊论文
| 作者 | 陈永亮 ; 周晓燕 ; 韩士杰 |
| 刊名 | 林业科学
 |
| 出版日期 | 2006-09-30 |
| 期号 | 09页码:119-126 |
| 关键词 | 落叶松苗木 根/土界面 N素形态 pH值 养分有效性 |
| 中文摘要 | The effect of different nitrogen and phosphorus sources on pH and the availability of mineral nutrients in the root/soil interface of Larix gmelinii seedlings were studied by means of root-mat method. The results showed that the addition of NH~+_4-N decreased the pH in the root/soil interface, while the addition of NO~-_3-N increased the pH in contrast with the control treatment. The sort of the P sources and the distance from the root plane remarkably influenced the changes of pH in the root/soil interface induced by the addition of the nitrogen sources. Compared with the addition of only NH~+_4-N, the extent to which the pH in the root/soil interface decreased was obviously smaller when treated by NH~+_4-N and rock P. When treated with different P sources, the contents of available P in the root/soil interface were affected by the sort of the N sources. When treated with soluble P, the contents of the available P in the root/soil interface obviously increased for the addition of both NH~+_4-N and NO~-_3-N. When treated with rock P, the contents of the available P increased only in the area 0～3 mm from the root plane for NH~+_4-N, whereas the contents of available P in the root/soil interface changed little for NO~-_3-N. The results above showed that the protons excreted by the roots were the main driving force for the solution of the rock P in the root/soil interface. The availability of Fe in the root/soil interface increased as a result of acidity induced by the NH~+_4-N, whereas the availability of Fe in the root/soil interface decreased because of the pH increase induced by the NO_3~-_N. The effect of different N sources on the availability of Fe in the root/soil interface was also affected by the sort of P sources. The concentrations of P、Fe in the leaves remarkably differed when treated by different N、P sources and concentrations of the P、Fe in the root/soil interface were correlated to those in the leaves of the seedlings. |
| 收录类别 | CNKI |
| 语种 | 中文 |
| 公开日期 | 2011-05-05 ; 2011-05-19 |
| 源URL | [http://210.72.129.5/handle/321005/47498]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | 陈永亮,周晓燕,韩士杰. 不同N素形态对落叶松苗木根/土界面pH值及养分有效性的影响[J]. 林业科学,2006(09):119-126. |
| APA | 陈永亮,周晓燕,&韩士杰.(2006).不同N素形态对落叶松苗木根/土界面pH值及养分有效性的影响.林业科学(09),119-126. |
| MLA | 陈永亮,et al."不同N素形态对落叶松苗木根/土界面pH值及养分有效性的影响".林业科学 .09(2006):119-126. |
入库方式： OAI收割
来源：沈阳应用生态研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。