Fecha de publicación: 23/02/2021 Fuente: Wipo Tobacco Agriculture The utility model discloses a vertical quantitative layered fertilization mechanism, which comprises a connecting seat, a fertilizer flow channel and a fertilizer flow channel, the top end of the outer sleeve is fixedly connected with the bottom end of the connecting seat and is communicated with the chemical fertilizer runner; the inner sleeve is coaxially arranged in the outer sleeve in a sleeving mode, a lower sealing partition plate is fixedly connected to the peripheral side of the bottom end of the inner sleeve, and the lower sealing partition plate is fixed to the inner sleeve wall of the outer sleeve; an upper-layer fertilizer cavity is defined between the inner sleeve and the outer sleeve, an upper-layer fertilizer outlet communicated with the upper-layer fertilizer cavity is formed in the wall of the outer sleeve, a lower-layer fertilizer cavity is formed in the position, below the lower sealing partition plate, in the outer sleeve, and the lower end of the inner sleeve is communicated with the lower-layer fertilizer cavity; a lower-layer fertilizer outlet communicated with the lower-layer fertilizer cavity is formed in the wall of the outer sleeve; and ground breaking parts are fixedly connected to the positions, located at the upper-layer fertilizer outlet and the lower-layer fertilizer outlet, of the wall of the outer sleeve. The fertilizing mechanism has a quantitative layering effect, the fertilizer utilization rate and the operation efficiency are improved, and time and labor are saved.