Some Aspects of the Physical Chemistry of Paddy Soils

  • F. N. Ponnamperuma

Abstract

Paddy soils are soils that are managed in a special way for the wet cultivation of rice. The management practices include flooding, puddling, maintaining a layer of standing water while the crop is on the land, draining and drying the fields, and reflooding for the next rice crop. Paddy soils are usually Entisols and Inceptisols and occur in landscapes where both surface and internal drainage are poor. Thus most paddy soils are found in deltas and adjacent flood plains, in valleys, and coastal plains. The chemical composition of paddy soils is variable but their hydrology and management practices confer on them many distinct properties (1, 2).

Keywords

Zinc Fermentation Phosphorus Sulfide Hydroxide 

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Copyright information

© Science Press, Beijing and Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  • F. N. Ponnamperuma
    • 1
  1. 1.The International Rice Research InstituteLos BañosPhilippines

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