The invention discloses a quantitative fertilization mechanism in a corn intertillage period, and aims to solve the problems that manual and mechanical topdressing operation in the intertillage period of corn planting is not easy to perform in a field, the
working space is small, crops are easy to damage,
fertilizer is wasted, the topdressing effect cannot be achieved and the like. The quantitative fertilization mechanism is characterized in that when the quantitative fertilization mechanism performs field operation, a furrow opener on the front side of the mechanism divides soil to two sides, and after quantitative topdressing operation is completed, a soil covering device on the rear side of a charging
barrel covers the surface of the
fertilizer with the soil, so that the
fertilizer is in full contact with the soil, and the quantitative topdressing effect is achieved; the mechanism does not have working dead angles, so that fertilizer accumulation is avoided; no topdressing is omitted; the furrow opener, the charging
barrel and the soil covering device work separately, so that the
interference phenomenon does not exist; the arc-shaped design of a rotating plate ensures that the fertilizer in a fertilizer limiting sleeve completely falls into furrows; and bolts enable a fertilizer baffle and the rotating plate to coaxially move, so that the movement track of the fertilizer in the charging
barrel is ensured, the smooth operation of quantitative topdressing is ensured, the manual topdressing cost can be reduced, and the topdressing effect in the corn intertillage period can be ensured.