<；P>；PROBLEM TO BE SOLVED: To provide a plant cultivation system widely applicable to various kinds of plants, suppressing reproduction of various germs, and promoting growth of plants to efficiently perform cultivation. <；P>；SOLUTION: This plant cultivation system 2 includes a cultivation bed 40 arranged and held in a plurality of vertical steps, an artificial light source 80 to be vertically moved according to growth of a cultivation plant P, and an air conditioning device 84 sequentially sending air adjusted in temperature, humidity and CO<；SB>；2<；/SB>；concentration to an air passage 87. The cultivation bed 40 is made of a cultivation tank 72, and an implanting panel 73 engaged with an upper part of the cultivation tank 72, forming a flow pass 76 of a nutritious liquid A, and putting the cultivation plant P into an implanted state by exposing plant roots P' toward the flow pass 76. In the plant cultivation system 2, the nutritious liquid A supplied to the cultivation bed 40 circulates and is reused after continuously passing the flow pass 76 and being discharged, and the nutritious liquid A is controlled to intermittently flow into the flow pass 76. <；P>；COPYRIGHT: (C)2010,JPO&INPIT
