Concentrated discharging type precision rice direct-seeding device

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, t