PROBLEM TO BE SOLVED: To solve a problem that in simple cultivation of radish sprouts (sprouts) and the like at home, one cannot avoid boring labor of supplying water needed daily, and when fails to supply water, the cultivation will end up in failure due to matters of decay and shortage of water, especially in a summer season.SOLUTION: The cultivation device has a structure where a net made of plastic is put onto or incorporated into a frame made of styrene foam or the like having large buoyancy, so that when sunk in a water tank, surface tension by net pores pulls the net to be kept in barely on the water surface. When seeds are sown and grown on the net, water supply is not needed, dispensing with labor. The cultivation device not sinking into water by the weight accompanied by growth is assisted by buoyancy of the cultivation device itself, removing such worries, and root rot does not occur. The stems grow soon and smoothly according to the roots grow to be long without resistance.COPYRIGHT: (C)2015,JPO&INPIT【課題】 かいわれ大根(スプラウト)などの家庭での簡易栽培では、毎日の水の供給を必要とし、頓わしさは免れず、怠ると特に夏場など水の腐敗、および、水不足の問題から栽培が失敗に終るので解決が望まれる。【解決方法】 本発明の栽培器は、プラスチック製ネットを浮力の大きい発泡スチロールなどの枠の上に乗せるか組み込んだ形態のもので、これを水槽に沈めると、ネットの細孔による表面張力で引っ張られ、ネットは水面すれすれの状態に保たれる。このネット上に種子を蒔き成育させる場合、水の供給は不必要で手間が掛からない。成長に伴う荷重による栽培器の水没の問題については、栽培器本体の浮力もプラスし、その心配はなく根腐れを起こすことはない。根は抵抗なく長く伸び、相応して茎も早く順調に成長する。【選択図】図2
