Seed and fertilizer integrated seeder

The invention relates to the technical field of agricultural machinery, and particularly discloses a seed and fertilizer integrated seeding machine which comprises a machine body, a seeding mechanism, a seed feeding mechanism and a soil covering mechanism are sequentially installed in the front-back direction of the machine body, the seeding mechanism comprises a water tank, and a water tank used for supplying water and fertilizer into the water tank is arranged on one side of the water tank; the water tank is internally provided with a liftable quantitative pipe, the quantitative pipe is through up and down, and a gap is formed between the bottom end of the quantitative pipe and the inner bottom of the water tank in an initial state, so that the water and the fertilizer in the water tank enter the quantitative pipe; the water outlet matched with the quantitative pipe and the gate used for closing the water outlet are formed in the bottom face of the water tank, the position of a seed bud is positioned throug