Rice precise quantity seed sowing device and seed sowing method thereof

The invention provides a rice precise quantity seed sowing device and a seed sowing method thereof in the technical field of agricultural seeding machinery. The rice precise quantity seed sowing device comprises a seed sowing casing with an accommodating cavity, wherein seed sowing wheels are rotatably connected onto the seed sowing casing; a seed feeding opening is formed in one upward end of theseed sowing casing; a seed sowing opening is formed in one downward end of the seed sowing casing; a plurality of seed sowing grooves for placing seeds are distributed on the outer periphery of the seed sowing wheels; a scoop is arranged on each of the seed sowing wheel arranged beside each seed sowing groove, and faces the seed sowing groove; when the seed sowing wheels rotate to sow the seeds,the scoops support the seeds; the seed sowing casing is divided into a seed supplementing region and a seed sowing region through the seed sowng wheels; the seeds put into the seed sowing casing fromthe seed feeding opening ar