PROBLEM TO BE SOLVED: To solve a problem of salinity removal from soil in which usual crops cannot grow such as salinity precipitated soil due to repeated use in land originally only with fresh water of high salinity concentration or a field exposed to seawater due to flooding of seismic sea waves.SOLUTION: A water intake basin and a watering part are provided in a field of high salinity concentration. Water of high salinity concentration drawn up from the water intake basin is allowed to pass through a seawater desalinating apparatus, and obtained fresh water is supplied to the field again to repeatedly wash the field with a small amount of water.COPYRIGHT: (C)2013,JPO&INPIT【課題】もともと塩分濃度の高い淡水しかない土地での繰り返し使用による塩分析出土壌や津波の冠水によって海水に曝された圃場など通常の作物が生育できない土壌の塩分除去が課題であった。【解決手段】塩分濃度の高い田畑に取水枡と散水部を設け、取水枡より汲みあげた塩分濃度の高い水を海水淡水化装置を通すことにより淡水化し、できた淡水を再度田畑に供給することにより少量の水で繰り返し田畑の洗浄を行う。【選択図】図1
