Reduction of Murky Water Load by Cyclic Irrigation

• HAMA Takehide

  Graduate School of Agriculture, Kyoto University

• NAKAMURA Kimihito

  Graduate School of Agriculture, Kyoto University

• MITSUNO Toru

  Graduate School of Agriculture, Kyoto University

Bibliographic Information

Other Title

• 循環灌漑による濁水負荷削減効果
• ジュンカンカンガイ ニ ヨル ダクスイ フカ サクゲン コウカ

Abstract

In this study, cyclic irrigation as reduction measure for murky water load was investigated in low-lying paddy field district around Lake Biwa. As a result, it was shown that the irrigation system could reduce effectively the murky water load during the puddling season. Comparing with conventional irrigation system, in which irrigation water is derived from the Lake Biwa by pumping, the cyclic irrigation system during the puddling season could reduce the potentially efflux load of up to 152 kg ha ^-1 in 2004 and 415 kg ha^-1lin 2005, respectively. And then, total load returned to the paddy by the irrigation was 37 kg ha^-1 and 204 kg ha^-1, respectively. On the other hand, it was suggested that the weather condition and the management practices of the irrigation facilities had large influences on the reduction effect.

Journal

• Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering

  Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering 2006 (245), 721-727, 2006

  The Japanese Society of Irrigation, Drainage and Rural Engineering

Keywords

• Murky water load
• Cyclic irrigation
• Measures for water quality
• Riparian low-lying paddy field district

Details

• CRID: 1390282679518897536
• NII Article ID: 10018330112
• NII Book ID: AN00201203
• DOI: 10.11408/jsidre1965.2006.721
• ISSN: 18847234
• ISSN: 03872335
• NDL BIB ID: 8561087
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8561087
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed