Automated sowing streamline for breeding plug tray

The invention discloses an automated sowing streamline for a breeding plug tray. A breeding plug tray loading device, a substance laying device, a precision roller sowing device, a spraying device, a substance covering device and a breeding plug tray stacking device are fixedly on the sowing streamline in sequence. Breeding plug trays are arranged above the breeding plug tray loading device and are pushed to the sowing streamline along a conveyor belt. The working efficiency of the streamline is ten times as much as that of the conventional artificial breeding, the labor cost is reduced by 2/3, and the breeding quality is obviously improved. Meanwhile, through optimization and improvement of mechanical structures and electrical automation equipment, compared with an automated machine in the prior art, the automated sowing streamline is simpler in structure, higher in working efficiency and quality, and better in universality of accessories and in reliability and safety. The automated sowing streamline has qui