Precision rice hole direct seeding seed-metering plate with adjustable seeding rate

The invention discloses a seeding-rate-adjustable rice precision hole direct seeding seed-metering disc, and relates to the technical field of rice seeding equipment, the seeding-rate-adjustable rice precision hole direct seeding seed-metering disc comprises a cavity disc, a fluted disc and a seed filling disc, a plurality of seed filling cavities and a plurality of seed-metering cavities are uniformly arranged in the cavity disc along the circumferential direction, and the cavity disc is partitioned by partition plates extending along the radial direction of the cavity disc; seed-metering openings are also formed in the circumferential surface of the cavity channel disc at intervals and are communicated with the seed-metering cavity; a plurality of fixed teeth are uniformly arranged on the fluted disc along the circumferential direction, the fixed teeth are correspondingly positioned in the seed filling cavity, and the size of the fixed teeth is smaller than that of the seed filling cavity along the circumfe