Modularized multifunctional belt-shaped compound seeder

The utility model discloses a modularized multifunctional belt-shaped compound seeder which comprises a rack, a plurality of fertilizer boxes are connected to the rack, the bottom of each fertilizer box is connected with a fertilizer feeder through a rotating shaft, the rack is provided with a fertilizer feeding shaft, the fertilizer feeding shaft drives the fertilizer feeders to rotate, and a first driving device is arranged at the end of the fertilizer feeding shaft; the rack is also provided with a seed-metering part and a seed-metering shaft for driving the seed-metering part to meter seeds, and the seed-metering shaft is driven by a driving device I; a transmission box is arranged in the middle of the rack, one end of the transmission box is rotationally connected with a rear furrow opener through a rear drainage furrow opener transmission shaft I, the other end of the transmission box is a power output end and is used for being connected with an external power source, the bottom of the transmission box