Air blowing and chain seed taking combined type high-speed precise seed metering device

The invention discloses an air blowing and chain seed taking combined type high-speed precise seed metering device, and mainly relates to the technical field of agricultural machinery. Comprising a seed box, a drainage plate with the middle protruding upwards is arranged in the seed box, arc-shaped seed filling areas are reserved between the left end and the right end of the drainage plate and the inner wall of the seed box, a seed taking disc is arranged at the bottom of the seed box, chain wheels are arranged at the left end and the right end in the seed taking disc, and an air conveying hole is formed in the center of the tooth top of each tooth of the chain wheels. A seed taking chain is arranged between the two chain wheels and comprises a plurality of seed taking chain links which are hinged in sequence, meshing holes matched with teeth of the chain wheels are formed in the middle of one side of each seed taking chain link, a seed conveying hole is formed in the other side of each seed taking chain link