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应用电子探针研究苗木根土界面元素微区分布(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2009年03期
Page:
65-68
Column:
研究论文
publishdate:
2009-05-30

Article Info:/Info

Title:
Distribution characteristics of elements in rootsoil interface of Pinus koraiensis seedlings by electron probe Xray microanalysis
Author(s):
CHEN Yongliang1 HAN Shijie2
1.College of Life Science Linyi Normal University, Linyi 276005, China; 2.Institute of Applied Ecology, CAS, Shenyang 150016, China
Keywords:
rootsoil interface element distribution electron probe Xray microanalysis Pinus koraiensis
Classification number :
S791.247
DOI:
10.3969/j.jssn.1000-2006.2009.03.015
Document Code:
A
Abstract:
The distribution characteristics of the elements in the rhizosphere and root tissue of Pinus koraiensis were studied by electron probe Xray microanalysis in this paper. The results showed that the contents of N, P, K, Ca, S in the rhizosphere soil were all lower than that in the root tissue, while the contents of Fe in the rhizosphere soil was higher than that in the root tissue. The contents of P, K in the root tissues increased from the root surface to interior of the roots gradually. On the contrary, the contents of N, Ca, Fe in the root tissues decreased from root surface to interior gradually. The magnitude of the rootsoil ecological interface and mechanism by which the elements were transported might be explained largely by means of the gradient distribution of the elements in the rhizosphere soil and the root tissue.

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Last Update: 2009-05-30