< Topic >It is cheap, the water level adjustment which at the same time can adjust water level optionally with simple structure is offered.SolutionsOutside the paddy field embedding in the levee, the tubed computer section you communicate with outside and inside 11 where the top is opened in the earths surface and this computer section 11, the upward opening 14 which is directed to the upper part inside computer section 11, from the base of the paddy field the first tube the second tube 24 which communicates with outside and inside computer section 11 with the lower part and joint opening section 18 and scupper section 17 having from the base of 13 which is laid out in the lower part and the paddy field, joint opening section 18 looks upward, in opening 14 from installation and removal possible adjustment tube 16 water level adjustment 10As it constitutes, it changes the water level of the water guttation by the fact that you exchange to each adjustment tube 19,20,21,22,23 where length differs, via scupper section 17, you adjust the water level of the paddy field.< Choice figure >Drawing 1【課題】安価であり、かつ簡便な構造で任意に水位を調節することができる水位調節装置を提供する。【解決手段】水田の外で畦に埋設されて上端が地表で開放される筒状の本体部11と、この本体部11の外側と内側とを連絡し、本体部11の内側で上方に向けられた上向き開口部14が、水田の底面より下方に配置された第一管13と、水田の底面より下方で本体部11の外側と内側とを連絡する第二管24と、接続口部18と排水口部17とが備えられて接続口部18が上向き開口部14に着脱可能な調節管16とから水位調節装置10を構成し、長さが異なる各調節管19,20,21,22,23に交換することで、排水口部17を通じて排水される水の水位を変化させると共に水田の水位を調節する。【選択図】図1
