Pneumatic sowing unit and sowing method of agricultural unmanned aerial vehicle

The invention discloses a pneumatic sowing unit and sowing method of an agricultural unmanned aerial vehicle, which comprises a shell, a feeding port is formed in the top of the shell, a discharging port is formed in the bottom of the shell, a disc is arranged in the shell, a discharging channel is formed in the shell, an opening is formed between the top of the discharging channel and the shell, the discharging port is located at the bottom of the discharging channel, the disc is rotationally connected with the shell, and seed suction holes are formed in the disc. Ordered direct sowing in the prior art can be achieved through the technical scheme, direct sowing of an unmanned aerial vehicle or ground equipment only achieves sowing and drilling and belongs to the disordered direct sowing state at present, ordered hole sowing is achieved through the technical scheme, and in other words, regular line-forming hole-forming particle direct sowing is achieved, field ventilation and illumination conditions are impro