A NEW APPROACH FOR RHIZOSPHERE RESEARCH BY X-RAY-MICROANALYSIS OF MICROLITER SOIL SOLUTIONS

被引:18
作者
FRITZ, E [1 ]
KNOCHE, D [1 ]
MEYER, D [1 ]
机构
[1] UNIV GOTTINGEN, INST AGRKULTURCHEM, D-37075 GOTTINGEN, GERMANY
关键词
EDX; ELEMENT ANALYSIS; RHIZOSPHERE; ROOT; SOIL SOLUTION; X-RAY MICROANALYSIS;
D O I
10.1007/BF00046392
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Lolium perenne growing with high root density on a fine nylon mesh (Kuchenbuch and Jungk, 1982) caused the development of element gradients in the rhizosphere below the mesh. Micro-liter soil solutions from 2-mg soil samples were sprayed onto Formvar-coated grids and analyzed by X-ray microanalysis in a transmission electron microscope. The results were comparable to those obtained by flame photometry and atomic absorption spectrometry (AAS) of conventional soil solutions from 1 g soil, X-ray microanalysis of micro-soil solutions allows the application of different extraction procedures to even small amounts of soil usually available from rhizosphere experiments. information about soil buffering characteristics in the rhizosphere can thus be obtained. Aluminum accumulation in the rhizosphere of small segments of single Picea abies fine roots grown in undisturbed natural forest soil could be detected with this technique.
引用
收藏
页码:219 / 223
页数:5
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