The nutrient solution circulatory system of this creation, including at least having: at least one layer of frame, a reservoir, a lautertuns, at least a hydraulic pipeline, at least a water return pipeline, at least raw water supply pipeline and a control equipment It can be under the running of the first pumping, nutrient solution is delivered at each cultivation bed, the nutrient solution guidance that each cultivation bed is more than height of water level is back to lautertuns by water return pipeline, is recycled by the liquid storage space reclamation that filter material enters reservoir, the quality of nutrient solution can be maintained under the effect of filter material When necessary, the second pumping can be started, raw water supplement is carried out to reservoir via raw water supply pipeline, so that enough with means relatively more actively, reliable, it is ensured that the plant cultivated is able to smooth growth.本創作之養液循環系統,至少包括有:至少一層架、一儲液槽、一過濾槽、至少一輸水管路、至少一回水管路、至少一原水補給管路,以及一控制設備;可在第一泵浦之運作下,將養液輸送至各栽培槽處,由回水管路將各栽培槽超過水位高度的養液引導回流至過濾槽,通過濾材進入儲液槽之儲液空間回收再利用,可在濾材之作用下維持養液之品質;必要時,可啟動第二泵浦,經由原水補給管路對儲液槽進行原水補充,俾能夠以相對更為積極、可靠之手段,確保所栽培之植物得以順利生長。W‧‧‧養液10‧‧‧層架11‧‧‧格位12‧‧‧栽培槽20‧‧‧儲液槽21‧‧‧儲液空間22‧‧‧槽蓋30‧‧‧過濾槽31‧‧‧濾材40‧‧‧輸水管路50‧‧‧回水管路60‧‧‧原水補給管路80‧‧‧控制設備81‧‧‧控制電路82‧‧‧操作介面83‧‧‧第一泵浦84‧‧‧第二泵浦85‧‧‧水位感應器
