Evaluation of on-farm irrigation systems for multiple rice cropping in Southeast Asia

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580351
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Irrigation, drainage and rural engineering/Rural planning
• Research Institution: Utsunomiya University
• Principal Investigator: GOTO Akira 宇都宮大学, 農学部, 教授 (80162139)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 灌漑排水 / 多期作 / タイ / 灌漑効率

Outline of Final Research Achievements

Field investigations were conducted to clarify water balance and on-farm irrigation efficiency of irrigation systems in the Chaophraya delta, Thailand, where multiple rice cropping is commonly practiced. The results indicated that double or triple rice cropping was materialized through achieving very high on-farm efficiency despite limited water supply in the dry season. It was also indicated that improved water access by increase in density of farm ditches and utilization of mobile pumps were the main factors for the high on-farm efficiency. This result proved that the concept of on-farm irrigation efficiency proposed by this study be useful for evaluation of irrigation systems. Further, it was considered important that development and extension of new high quality rice varieties provoked farmers' incentive for multiple cropping. Thus, the factors for realizing multiple rice cropping were clarified and the direction of improvement of on-farm irrigation systems was also suggested.

Free Research Field

灌漑排水工学，水文学