2010 Fiscal Year Final Research Report

Construction of the Water Saving System and Improvement of the Rice Paddy Lot Environment Applying a Winter Puddling and Direct Seeding Culture on Well-Drained Rice Paddy Field

Research Project

Project/Area Number	20580268
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Irrigation, drainage and rural engineering/Rural planning
Research Institution	Tokyo University of Agriculture
Principal Investigator	NAKAMURA Yoshio Tokyo University of Agriculture, 地域環境科学部, 教授 (40078192)
Co-Investigator(Kenkyū-buntansha)	KOMAMURA Masaharu 東京農業大学, 地域環境科学部, 教授 (60078194) NAKAMURA Takahiko 東京農業大学, 地域環境科学部, 講師 (10287451)
Project Period (FY)	2008 – 2010
Keywords	冬季代かき / V溝乾田直播栽培 / 深水無落水灌漑 / 水管理 / 節水型水利用 / 用水量 / 圃場環境 / 水質
Research Abstract	The purpose of this study is to clarify how to construct of the saving water system and to improve of rice paddy field lot environment applying a winter puddling and direct seeding culture on well-drained rice paddy field. As a result, it was clarified that 20~30 percent of water was saved and irrigation water and soil temperature were stabilized and water environment was preserved applying the deep ponding and non-ponding release irrigation systems. Furthermore, it was clarified that the functions of effective rainfall and storage water were increased.