PROBLEM TO BE SOLVED: To reduce costs required for production and installation of the whole device by forming a liquid manure device in an easy device structure, and reducing the number of parts of the liquid manure device and a man-hour of assembling the parts, and further a liquid manure device installation man-hour into a field.SOLUTION: The hydroponic device is such that the liquid manure device 3 includes a liquid manure producing device 4 and a liquid manure supplying device 5. The liquid manure producing device 4 and the liquid manure supplying device 5 are each separately independently formed. One or a plurality of the liquid manure supplying devices 5 are installed on each of fields 2 of a different height according to the width of the field 2, one or a plurality (less than the liquid manure supplying devices 5) of the liquid manure producing devices 4 are installed on each of a plurality of the fields 2 as a liquid manure producing source common in each of the fields 2, and an interval between the liquid manure supplying device 5 and the liquid manure producing device 4 is connected by a piping system. Each of the devices 4 and 5 are automatically driven by a control console.COPYRIGHT: (C)2011,JPO&INPIT【課題】液肥装置の簡素化を図る。【解決手段】液肥装置3は液肥作成装置4と液肥送給装置5とを備え、液肥作成装置4と液肥送給装置5はそれぞれ分離独立して構成されて、高さが異なる圃場2ごとに当該圃場2の広さに応じて1機又は複数機の液肥送給装置5が設置され、複数の圃場2ごとに当該各圃場2に共通の液肥作成源として1機又は(液肥送給装置5よりも少ない)複数機の液肥作成装置4が設置され、これらの液肥送給装置5と液肥作成装置4との間が配管系により接続される。各装置4、5は制御盤により自動運転される。【選択図】図1
