Device for large-scale culture of marine microalgae

The device comprises a supporting plate, a plurality of extrusion grooves used for fixing culture dishes are formed in the top face of the supporting plate, a drawing groove is formed in the portion, below the extrusion grooves, of the supporting plate, a drawing plate is arranged in the drawing groove, and a heat storage groove used for containing a heat source is formed in the drawing plate. A plurality of through holes are formed between the heat storage groove and the extrusion groove and used for transmitting heat released by a heat source in the heat storage groove to the bottom of the extrusion groove, a vessel cover is installed on the culture dish, and a rotating groove used for adjusting the ventilation quantity is formed in the center of the vessel cover. According to the device, the function of adjusting the temperature of the marine microalgae culture environment in the device is achieved, the function of fixing culture dishes for culturing the marine microalgae in a large-scale device is achieve