Microbial inoculum layered spraying device assembled on straw bundling machine

The utility model discloses a microbial inoculum layered spraying device assembled on a straw bundling machine. The device comprises a straw box cover, a straw flow guide device, a dust removal pipeline, a primary spraying system, a secondary spraying system, a rack, an auger conveying device and a picking and crushing part, one end of the traction frame is connected with the rack; the other end is connected with a straw bundling machine; a belt wheel arranged on the straw bundling machine is connected with a universal joint through a universal joint. The universal joint is connected with an output shaft of a tractor, the belt wheel is connected with and drives a picking and crushing component and an auger conveying device, and the auger conveying device conveys straw picked and crushed bythe picking and crushing component to the secondary rubbing and crushing fan device and blows the straw into the dust removal pipeline through the secondary rubbing and crushing fan device. Accordingto the microbial inoculum