Microbial metabolism in reduction process of paddy soils (Part 2) |
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Authors: | Yasuo Takai Tadashiro Koyama Takao Kamura |
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Affiliation: | 1. Faculty of Agriculture , The University of Tokyo;2. Faculty of Science , Nagoya University , Nagoya;3. Faculty of Agriculture , Nagoya University , Nagoya |
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Abstract: | The previous experiences1-3) with incubation experiments of the soils under submargd condition indicated that the disappearance of molecular oxygen and nitrates occurred shortly after sub-emerging, and then the reduction of ferric iron proceeded, being followed by the reduction of sulfates and the formation of methane which nre caused by the activities of strict anaerobes. It was suggested from the above fact that the reduction process in the submarged soils was affected mainly by two factors: namely, the amount of reducible ferric iron and the soil organic matters which are avaiable as substrate for microbial metabolism. |
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