WATER SUPPLY DEVICE FOR SUBSURFACE IRRIGATION

摘要

PROBLEM TO BE SOLVED: To provide a water supply device for subsurface irrigation capable of maintaining a groundwater level fixed while infiltrating irrigation water under the ground of a paddy field. ;SOLUTION: A measure main body 1 is embedded to the paddy field for a prescribed depth and a culvert pipe 2 laid under the ground of the paddy field is connected to the lower part of the measure main body 1. Also, a water level setting device 3 is provided inside the measure main body 1, a water supply pipe 4 is connected to the water level setting device 3 and the irrigation water is infiltrated under the ground of the paddy field from a small hole 2a provided on the culvert pipe 2 while maintaining the irrigation water made to flow into the measure main body 1 at a fixed water level by the water level setting device 3.;COPYRIGHT: (C)1998,JPO