A kind of gas phase specific gravity culture apparatus,Include: a greenhouse,Equipped with an exhaust outlet； At least one plants cultivation case,If in what greenhouse,With pedestal and upper cover,The upper cover is made of water suction material,The upper cover center is equipped with an opening,Opening lower section connects a hollow pipe,Hollow pipe periphery is equipped at least one circle and supplies to hold the extension flange and an at least venthole of nutritional agents,The upper lid surface combines a waterproof material piece,Upper cover lid unification is equipped with the pedestal into tracheae； And a mixing tank,Air and water are mixed to form damp atmosphere by system,The mixing tank enters in conjunction with tracheae one end with cultivation bottom seat is planted simultaneously,This enters the another end of tracheae and combines a cooling device； Thereby,Plant is placed what to plant in cultivation case,Starting mixing tank enables damp atmosphere be imported in pedestal by entering tracheae,And cooled down using cooling device to damp atmosphere,Be condensed the moisture content in damp atmosphere with provide plant growth use,And the dry air of the universe is then discharged by greenhouse exhaust outlet.一種氣相比重栽培裝置，包含：一溫室，設有一排氣口；至少一植栽箱，設於溫室內，具有底座及上蓋，該上蓋由吸水材質製成，該上蓋中心設有一開口，開口下方連接一空心管，空心管周緣設有至少一圈供盛放營養劑的延伸突緣與至少一通氣孔，該上蓋表面結合一不透水材質片，該上蓋蓋合一設有入氣管的底座；以及一混合箱，係將空氣與水混合形成高濕度空氣，同時該混合箱與植栽箱底座的入氣管一端結合，該入氣管的另端並結合一降溫裝置；藉此，將植物放置於植栽箱中，啟動混合箱令高濕度空氣由入氣管導入底座中，並利用降溫裝置對高濕度空氣降溫，使高濕度空氣中的水份被凝結以提供植物生長使用，而乾燥空氣則由溫室排氣口排出。
