PROBLEM TO BE SOLVED: To provide a subirrigation system capable of properly managing water levels of farm fields even in a case of such farm field sectioned in large blocks.SOLUTION: A subirrigation system 10 includes: a plurality of perforated pipes 12； a water-supply side connected pipe 14 which guides water supplied from a water supply channel 102 to each of the perforated pipes； and a water-drain side connected pipe 16 which guides the water drained from each of the perforated pipes to a drain channel 104. Further, on an upstream-side end of each of the perforated pipes, provided is a water-supply control device 40 which controls supply of the water to the perforated pipe. On a downstream-side end of each of the perforated pipes, provided is a water-drain control device 42 which controls drain of the water from the perforated pipe.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】大区画化された圃場であっても、圃場の水位を適切に管理できる、地下灌漑システムを提供する。【解決手段】地下灌漑システム１０は、複数の有孔管１２と、給水路１０２から供給される水を各有孔管に導く給水側連結管１４と、および各有孔管から排出される水を排水路１０４に導く排水側連結管１６とを備える。また、各有孔管の上流側端部には、有孔管への給水を制御する送水制御装置４０が設けられ、各有孔管の下流側端部には、有孔管からの排水を制御する排水制御装置４２が設けられる。【選択図】図２
