Field pest control device in farmland planting and breeding combined mode

The utility model discloses a field pest control device in a farmland planting and breeding combined mode, which belongs to the field of farmland planting and breeding and comprises a feed hopper, a feed port is arranged at the top end of the feed hopper, a discharge cavity is arranged at the bottom of the feed hopper, and a material blocking mechanism penetrates through and is slidably connected with the side wall of one side of the discharge cavity; the material blocking mechanism comprises material blocking plates, grooves, tooth grooves, limiting plates and limiting grooves, the side walls of the two sides of each material blocking plate are fixedly connected with the limiting plates correspondingly, the limiting grooves are formed in the inner side walls of the two sides of the discharging cavity correspondingly, the limiting plates are slidably connected with the interiors of the limiting grooves, and an adjusting mechanism is arranged on the side wall of one side of the discharging cavity; a groove is