PROBLEM TO BE SOLVED: To provide a simple and low-cost nutritious liquid feeding device in which nutritious liquid made from rainwater is allowed to have a desired component, and rainwater is used for cultivation, in a cultivation facility.SOLUTION: A cultivation facility is configured that a nutritious liquid feeding device 7 which feeds rainwater recovered by a rainwater recovery device and raw water, which is different from the rainwater, to plants to be cultivated is provided, a nutritious liquid sensor 87 which detects characteristics of rainwater or nutritious liquid formed by mixing the rainwater with the raw water is provided for the nutritious liquid feeding device, and a mixture ratio between the rainwater and the raw water is changed based on a detection of the nutritious liquid sensor.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2016,JPO&INPIT【課題】栽培施設において、雨水から作られる養液を所望の成分にし、雨水を栽培用に使用するための簡単で且つ低コストな養液供給装置を提供する。【解決手段】雨水回収装置で回収された雨水と該雨水とは別の原水とを栽培する植物へ供給する養液供給装置7とを設け、養液供給装置には、雨水又は該雨水と原水とを混合した養液の特性を検出する養液センサ87を設け、養液センサの検出に基づき雨水と原水との混合割合を変更する構成とした。【選択図】図7
