Differences in Presaturation Progress and Water Requirements between Areas with and without Tertiary Canals

• Fujii Hideto

  Tropical Agriculture Research Center

• Chang CHO Meng

  Muda Agricultural Development Authority

• KITAMURA Yoshinobu

  National Research Institute of Agricultural Engineering

抄録

In areas of low canal density, irrigation water may take a long time to reach its destination. This is due to the long distance involved between irrigation canals and drainage canals. Such low levels of irrigation canal density require high levels of water evaporation, meaning that the total water requirement under such conditions is large.<BR>In this study differences between areas with tertiary canal irrigation (Muda II project area) and those without tertiary canals (Muda I project area) were compared. Particular note was taken with regard to, first, the different progress of presaturation water and, second, the different amounts of water required under each type of irrigation condition. Two irrigation blocks with tertiary canal facilities and two without them were selected and compared from both coastal and inland areas in the first cropping season (dry season) of 1988, and the differences in the progress of presaturation water due to the differing levels of canal density and topographical gradients were noted. Water requirements were lower in the areas provided with tertiary irrigation facilities than in those without tertiary canals in both the coastal and inland areas.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｉｒｒｉｇａｔｉｏｎ　Ｅｎｇｉｎｅｅｒｉｎｇ　ａｎｄ　Ｒｕｒａｌ　Ｐｌａｎｎｉｎｇ

  Ｊｏｕｒｎａｌ　ｏｆ　Ｉｒｒｉｇａｔｉｏｎ　Ｅｎｇｉｎｅｅｒｉｎｇ　ａｎｄ　Ｒｕｒａｌ　Ｐｌａｎｎｉｎｇ 1993 (25), 16-30, 1993

  社団法人 農業農村工学会

詳細情報

• CRID: 1390001204633527552
• NII論文ID: 130004255960
• DOI: 10.11408/jierp1982.1993.25_16
• ISSN: 1884720X
• ISSN: 02878607
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
  • Crossref
• 抄録ライセンスフラグ: 使用不可