Characteristics of Water Requirement of Rice Fields in Cold Regions

• UMEDA Yasuharu

  Faculty of Agriculture, Hokkaido University

• YOSHIOKA Hideo

  Agriculture and Fishery Division, Hokkaido Development Bureau

• YUKUMI Miyoshi

  Hokkaido Office, Japan Weather Association

Bibliographic Information

Other Title

• 寒冷地における管理用水量の実態

Abstract

Farmland consolidation is done at many paddy fields in Hokkaido.It promotes independent setting of irrigation and drainage canals, conversion of fields into multi-purpose ones and reduced set-aside of rice paddy.So landuse has been of two types.One is paddy field and the other is upland field.We call this situation “Baraten”.As the environment of paddy fields changes considerably because of new varieties and techniques of water management, the role of water management changes to keeping a matched water requirement rather than maintaining an absolute requirement.As a result, it is impossible to calculate gross water needs by the water requirement rate method using net water requirements.We therefore researched the role of water requirement corresponding to new farming techniques from recent investigations.We studied a method of calculating lot-management water requirement and delivery water requirement considering intermittent irrigation, meteorological conditions and reduced set-aside of rice paddy.

Journal

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

  Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering 1994 (172), 55-64,a2, 1994

  The Japanese Society of Irrigation, Drainage and Rural Engineering

Keywords

• 水田潅漑
• 用水管理
• 配水管理用水量
• 栽培管理用水量

Details

• CRID: 1390282679518017536
• NII Article ID: 130004118710
• DOI: 10.11408/jsidre1965.1994.172_55
• ISSN: 18847234
• ISSN: 03872335
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed