2011 Fiscal Year Final Research Report

Effects of subsurface irrigation on some soil physical and chemical properties

Research Project

Project/Area Number	22880004
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Irrigation, drainage and rural engineering/Rural planning
Research Institution	Iwate University
Principal Investigator	MUTO Yoshiko 岩手大学, 農学部, 講師 (30422512)
Project Period (FY)	2010 – 2011
Keywords	地下灌漑 / 水田土壌 / 窒素動態 / 温暖化ガス / 水田の汎用化 / 酸化還元電位
Research Abstract	Along with the extension of rotational paddy filed through subsurface irrigation system, estimating carbon and nitrogen dynamics in the paddy soils is getting important. We perform several column experiments to investigate change in redox potential in soil with solute and water flow. The change in redox potential was summarized based on the flow rate and solute concentration. For the evaporation process, the response time and changing rate of soil redox potential against the air penetration were clarified.

(1 results)