| 摘要 |
PROBLEM TO BE SOLVED: To apply optimal irrigation to crops within a green house in a photosynthesis time period.SOLUTION: A hydroponics system 10 includes: a liquid supply unit 20 that supplies liquid to a medium 2; a waste liquid pump 4 with a float that discharges, from a waste liquid tank 3 that stores waste liquid from the medium 2, the waste liquid; an irrigation control panel 30; and a waste liquid counter 40 that stores a measurement value of a flow meter 6. The irrigation control panel 30 includes a clock part 31, a storage part 32 that serves as a time period-specific liquid supply condition setting pat, a monitor 33, and an input/output part 34. The waste liquid counter 40 includes a clock part 41, a storage part 42 that serves as a time period-specific storage area, a monitor 43, and an input/output part 44. The storage part 42 of the waste liquid counter 40 stores an amount of waste liquid in association with time period-specific settings on liquid supply conditions in the storage part 32 of the irrigation control panel 30. |
