| 摘要 |
PROBLEM TO BE SOLVED: To provide a plant cultivation apparatus capable of optimizing photon flux density with which a plant is irradiated according to a type of a plant and a growth status of a plant.SOLUTION: A plant cultivation apparatus is equipped with: a mounting section 2 on which a cultivation tank planting a plant therein is mounted; and an LED illumination device which is arranged above the mounting section 2 and uses only LED packages 12 which emit photon flux density required for the growth of the plant in the cultivation tank mounted on the mounting section 2. The plant cultivation apparatus has a square cultivation region 5 in a plan view above the mounting section 2 and at a height position between roots and leaves of the plant planted in the cultivation tank. Assuming that a length of both right/left sides 5a of the cultivation region 5 be L, 30% or more of LED packages 12 out of the total number of LED packages 12 in the LED illumination device are arranged above belt-like portions 7,9 formed between straight lines 6,8, which connect points PA,PB positioned at length portions of 0.3×L from both front/rear ends of both right/left sides 5a, and both front/rear sides 5b,5c. |
