Thermally efficient integrated greenhouse system

An integrated greenhouse system including in combination a greenhouse comprising a pair of insulated side walls, a pair of insulated end walls and a transparent roof supported by said walls, an extendible and retractible thermal barrier within said greenhouse below said roof, said barrier comprising a plurality of elongated inflatable tubes, means supporting said tubes below said roof for sliding movement of the tubes along a path transversely of the length of the tubes from a retracted condition of said barrier in which said tubes are deflated to an extended condition of said barrier as said tubes are inflated, said barrier comprising at least one layer of adjacent tubes, the lengths of which extend across the barrier, means forming bonds between said adjacent tubes in the direction of the lengths thereof, means forming respective pluralities of spaced air passages in the regions of said bonds between said adjacent tubes, means for alternatively supply air to at least one of said tubes during the daytime to cause said tubes to be successively inflated through said passages to extend the barrier and to exhaust air during the night from at least one of said tubes to deflate said tubes to retract the barrier, a heat storage box within said greenhouse, a heat storage medium in said box, a plurality of solar panels adapted to be heated by sunlight, means for conducting heat from said panels to said heat storage medium and means for supplying heat from said storage medium to the inside of said greenhouse.