Fungicide layered spraying device assembled on straw bundling machine

The invention discloses a fungicide layered spraying device assembled on a straw bundling machine. The device comprises a straw tank cover, a straw guide device, a dust discharge pipeline, a primary spraying system, a secondary spraying system, a rack, an auger conveying device and a picking and crushing component , wherein the rack is connected with one end of a traction rack; the straw bundlingmachine is connected with the other end of the traction rack; a belt pulley which is arranged on the straw bundling machine is connected with a universal joint through a universal joint; the universaljoint is connected with a tractor output shaft; the belt pulley is connected with and drives the picking and crushing component and the auger conveying device; and the auger conveying device is usedfor conveying straw picked and crushed by the picking and crushing component to a secondary kneading crushing fan device and used for blowing the straw into the dust discharge pipeline through the secondary kneading crushing fa