| 摘要 |
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 7 |
