< Topic >Plants the underwater plant, with just water job easily, in addition, the cheap plant cultivation system which can make the underwater plant take root at the place of desire is offered.SolutionsAs for underwater plant cultivation system 1, cultivation box of the cardboard make which possesses the aperture all over and the cultivation box the soil the underwater plant 6 which is planted in 5 which is provided inside 2 and the soil, or it has with that seed. Furthermore, it has the handle which is formed with the string and the rope which consist of the organic matter around aperture of the cultivation box. Water resistance processing is administered on the edge strip of the cultivation box and it is desirable in the base not to administer water resistance processing. If the underwater plant every cultivation box should have been sunk to underwater, quite easily can install. The cultivation box because it consists of the cardboard, resolution naturally at underwater, recovery is unnecessary.< Choice figure >Drawing 1【課題】水中植物の植栽を、水上作業だけで容易に行え、また、水中植物を所望の場所で根付かせることができる安価な植物栽培システムを提供する。【解決手段】水中植物栽培システム1は、一面に開口を有する段ボール製の栽培箱2と、栽培箱内に設けられた土壌5と、土壌中に植え付けられた水中植物6、またはその種子とを備える。さらに、栽培箱の開口周囲に有機物からなる紐や縄で構成された持ち手を備える。栽培箱の側面には耐水加工を施し底面には耐水加工を施さないことが好ましい。水中植物を栽培箱ごと水中に沈下させればよく、極めて容易に設置できる。栽培箱は段ボールで構成されているため、水中で自然分解し、回収が不要である。【選択図】図1
