Temporal Change in Particle Size Distributions of Suspended Solids Discharged from Paddy Fields

• SUNAGA Yoshiaki

  United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology

• MATSUI Hiroyuki

  School of Agriculture, Utsunomiya University

• OSAWA Kazutoshi

  School of Agriculture, Utsunomiya University

Bibliographic Information

Other Title

• 水田排水に含まれる懸濁物質の粒度分布の経時変化に関する考察
• スイデン ハイスイ ニ フクマレル ケンダク ブッシツ ノ リュウド ブンプ ノ ケイ ジヘンカ ニ カンスル コウサツ

Abstract

We investigated the temporal change in particle size distributions of suspended solids (SS) in the irrigation water and the drainage water at paddy fields located in Utsunomiya. We clarified the followings. First, the particle size distributions of SS in the drainage water tended to be coarse as the time proceeded from the paddling and transplanting period, while the particle size distributions of SS in the irrigation water tended not to change. Second, large amounts of fine fraction were discharged from paddy fields when turbid water containing a high concentration of SS was discharged during the paddling and transplanting period. Third, fine fraction tended to become suspended in paddy fields and be discharged from paddy fields under no rain condition. Finally, an proper turbidity - SS concentration calibration line is desired for the paddling and transplanting period and the other period, since particle size distributions of SS in these periods are different.

Journal

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

  Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 85 (2), II_113-II_119, 2017

  The Japanese Society of Irrigation, Drainage and Rural Engineering

Keywords

• Paddy field
• Suspended solid
• Water turbidity sensing
• Particle size distribution
• Soil conservation function

Details

• CRID: 1390001205288900352
• NII Article ID: 130006246969
• NII Article ID: 220000164686
• NII Book ID: AA12240517
• DOI: 10.11408/jsidre.85.ii_113
• ISSN: 18847242
• ISSN: 18822789
• NDL BIB ID: 028799655
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010932306
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028799655
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed