Sowing device with alternate work shifting function special for plot breeding

The invention relates to a sowing device with an alternate work shifting function special for plot breeding, and belongs to agricultural machinery. A movable slideway fixedly provided with a seed collecting box is movably installed on a static slideway; a seed guiding pipe is fixedly installed at the lower end of a seed receiving pipe of the seed collecting box; a connecting plate fixedly installed at the upper end is matched with the lower end of a hinged arm through a U-shaped hole slot in a sleeving way; a left sowing plate and a right sowing plate are rotatably assembled in a left shell and a right shell of a left seed box and a right seed box divided by a clapboard at the upper end and are driven by a hexagonal shaft section of a drive shaft in an insertion way; the hinged arm for shielding a frustum is arranged at the upper hinged end of a hinged seat on the shells; a seed clearing cutter fixedly installed in a narrow slot under a seed guiding groove is inserted in a sowing plateseed clearing furrow in