水田転換樹園地におけるインテークレイトの測定 Measurement of Intake Rates in a Paddy-converted Orchard

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Measurement of cylinder intake rates in the soil right over the under-drainage pipes and between them has produced the following findings. Let Integrated Infiltration (D) and Intake Rate (I) be defined respectively by the following formulae : D=CT^n, I=60CnT^<n-1>, where T stands for the elapse of time and constant n for the gradient of the line which is formed by the Cartesian product of logarithmically adjusted D and T. (1) The values of this gradient obtained in the same test field were found to be nearly the same both over the under-drainage pipes and in the spaces between them. This suggests that constant n has something to do with the characteristics of the soil. (2) The values of constant C obtained right over the under-drainage pipes were found to be greater than those obtained between them. C is generally considered to be affected by soil moisture and soil structure. That is to say, the value of constant C is expected to increase in proportion to the efficiency of a drainage system. Conversely, the fact that the use of the under-drainage pipes increased the value of C shows that they have some degree of efficiency as a drainage system.

収録刊行物

  • 富山県立大学紀要

    富山県立大学紀要 3, 219-223, 1993-03

    富山県立大学

各種コード

  • NII論文ID(NAID)
    110000477670
  • NII書誌ID(NCID)
    AN10358595
  • 本文言語コード
    JPN
  • ISSN
    09167633
  • データ提供元
    NII-ELS 
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