Fixed-location quantitative fertilizing device

The utility model provides a fixed-location quantitative fertilizing device which comprises a box body, a fertilizing pipe, a feeding shaft and a helical conveying shaft, wherein the fertilizing pipe is communicated with the bottom of the box body by a material outlet and extends to be positioned below the box body; the feeding shaft transversely passes through the fertilizing pipe and is arranged below the box body; a feeding wheel is arranged at the part of the feeding shaft, passing through the fertilizing pipe; the helical conveying shaft is arranged at the internal bottom of the box body; a linkage mechanism is arranged between the feeding shaft and the helical conveying shaft; at least one containing slot is arranged on the feeding wheel; and at least one branch pipe of the fertilizing pipe is arranged below the feeding wheel. In the utility model, the fixed-location quantitative fertilization is realized, the fertilizer can be saved, the use of the agglomerated fertilizer for fertilizing can be avoided, and the transmission system is simple and stable and is matched with a planting instrument, thus realizing the synchronization of fertilizing, seeding and planting.