The invention discloses a concentrated discharging type precision rice direct-seeding device. The device is characterized by comprising a
distributor, a seed box, a slanting fluted-wheel type seed discharging device, a fan, an air
capacity control valve, a seed guiding device, a conveying
pipe, a seed discharging
pipe and a pressure measuring device, wherein the bottom of the
distributor is connected with the conveying
pipe and the seed discharging pipe, and the pressure measuring device is arranged on the
distributor; the seed guiding device is connected with the conveying pipe, the slanting fluted-wheel type seed discharging device and the seed box are connected above the seed guiding device, an air inlet of the air
capacity control valve is connected with the fan, an air outlet is connected with the conveying pipe, and the fan is driven under external power; the slanting fluted-wheel type seed discharging device right under the seed box supplies stable seed flow, the fan provides
constant power air flow, the distributor uniformly distributes
mixed flow of seeds and air to the seed discharging pipe, and the seeds are sown in seed ditches. Compared with the prior art, the device has the advantages that uniform and continuous precision
sowing of rice can be realized, and back flowing of the seeds due to
partial pressure of air can be prevented; the concentrated discharging type precision rice direct-seeding device can have the walking speeds higher than that of a conventional mechanical
sowing machine and has higher
sowing efficiency.