Stepless speed-variation type rice seedling cultivation sowing machine

The utility model relates to a stepless shift gear type rice nursery planter, which belongs to a farm machine. An indented cell plating rollers are fixed at the mandrel position of seed box; A fixed belt pulley, an axially movable belt pulley, gaskets, nuts are arranged on the mandrel at the outside of the seed box. The movable belt pulley disc is positioned axially and radial at the mandrel in opposing location of fixed belt disc; A triangle belt is fixed for connection of the belt pulley and the movable belt pulley and a ground wheel; A tensioning plate to install a tensioning wheel at two sides is hinged at the side wall of the seed box. Two tensioning wheels are fixed at the inside and outside of the triangle belt with a contact interface. The machine completes a stepless regulation for rice nursery planting with easy and simple regulation for good planting quality and wide application range.