Reservoir quantity adjusting device and water level regulating plate in paddy field

摘要

PROBLEM TO BE SOLVED: To provide a water level adjustment device which is installed at an exhaust port of a paddy field to adjust water level.;SOLUTION: Guide grooves 6, 6 extending vertically are provided on inner side surfaces of both side plate portions 3, 3 of a drainage box, a lower plate 8 and a water level adjustment plate 9 are attached to the guide grooves, the lower end of the lower plate contacts a bottom plate portion 2 of the drainage box, the water level adjustment plate is fixed to a predetermined height from the bottom plate part, and the water level adjustment plate in which a triangular opening 15 is formed is provided with a closing plate which can close the opening as necessary.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT