Laboratory studies of effects of lime on soluble Al, Ca, Mg and Mn in a pelostagnogley soil
作者:
S. C. JARVIS,
期刊:
Journal of Soil Science
(WILEY Available online 1987)
卷期:
Volume 38,
issue 3
页码: 443-451
ISSN:0022-4588
年代: 1987
DOI:10.1111/j.1365-2389.1987.tb02279.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
SUMMARYThe cation composition of solutions and leachates from small‐diameter laboratory soil columns was examined over a 23‐week period after the addition of lime (0, 3 and 6 t ha–1) and/or nitrogen fertilizer (0 or 200 kg N ha–1) to an acid soil (pH 4.2). Water was applied at regular intervals to the surface of the columns and 17 leachate samples collected. Initially, the pH of the leachate was high (6.6) in all treatments (including those without lime) but fell rapidly to approach a steady value of 3.8. Large losses of calcium occurred from all columns; the total equivalent amounts of lime lost ranged from 0.88 (no addition) to 2.38 (with added lime) t CaCO3ha–1High concentrations of aluminium (181–325 μM) were present in leachates from all treatments; the addition of 200 kg N ha–1increased the leaching of Al by 94%; addition of lime also increased the amounts of Al leached (by 52%).The pH of the soil solution (separated by centrifugation) was influenced by treatment, especially in the top 0–40 mm of the column. Aluminium concentration was related to pH, but the form of the relationship differed amongs
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