PROBLEM TO BE SOLVED: To provide a liquid fertilizer supplying system capable of regularly supplying liquid fertilizer in which undiluted solution of the liquid fertilizer and water are mixed in a prescribed ratio.SOLUTION: In the system, water supplied from a water supply source 32 and the undiluted solution of the liquid fertilizer are agitated by an agitator 42 and the liquid fertilizer diluted to a prescribed magnification is reserved in a liquid-fertilizer tank 40. Then drivings of tube pumps 58, 60, which supply the undiluted solution from undiluted-solution tanks 50, 52 to the liquid-fertilizer tank 40, and the agitator 42, are controlled linking with output of control signal to perform watering from watering control program 26, and the liquid-fertilizer tank 40 is replenished with the liquid fertilizer. Consequently, every time watering is performed, the liquid fertilizer is replenished so that the liquid-fertilizer tank 40 has no possibility of becoming empty. In addition, the system has a flowmeter provided with liquid fertilizer supplying mechanism to calculate an integration amount of watering from the output signal and, in liquid fertilizer mixing program 28, flow rate of tube pumps 58, 60 is regulated according to the integration amount of watering, so that the liquid fertilizer which is diluted by a prescribed magnification can be regularly reserved, even when watering condition is changed.COPYRIGHT: (C)2014,JPO&INPIT【課題】液肥の原液と水が所定の割合で混合された液肥を常時供給することができる液肥供給システムを提供する。【解決手段】給水源32から供給された水と液肥の原液を、撹拌機42で撹拌し、所定倍率に希釈した液肥を液肥タンク40に貯留する。そして、潅水制御プログラム26からの潅水を行う旨の制御信号の出力に連動して、原液タンク50,52から液肥タンク40に原液を供給するチューブポンプ58,60と撹拌機42の駆動を制御し、液肥タンク40に液肥を補充する。このため潅水が行われるごとに、液肥を補充することになり、液肥タンク40が空になることがない。また、液肥供給機構に流量計を設け、その出力信号から積算潅水量を計算し、液肥混合プログラム28では、積算潅水量に応じてチューブポンプ58,60の流量調節を行うため、潅水条件が変化しても、常に所定の倍率で希釈された液肥を貯留できる。【選択図】図1
