Abstract
A long continuation of wetland rice cultivation often causes characteristic changes in soil morphology and properties, including surface gray coloring and the development of iron and manganese accumulation horizons. It should be noted that it is only in well-drained soils that the characteristic changes take place under wet cultivation of rice. The characteristic features of well-drained paddy soils are closely related to their peculiar type of water regime. It is almost unthinkable without perpetual irrigation by men that well-drained soils are kept submerged for about ninety consecutive days, with resultant charcteristic water regime, i.e. simultaneous submergence and percolation followed by oxidation after drainage.
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© 1981 Science Press, Beijing and Springer-Verlag Berlin Heidelberg
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Mitsuchi, M. (1981). Characteristic Features of Paddy Soils of Japan. In: Proceedings of Symposium on Paddy Soils. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-68141-7_46
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DOI: https://doi.org/10.1007/978-3-642-68141-7_46
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-68143-1
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