The utility model discloses a highly-efficient quantity control fertilizer apparatus, which comprises a fertilizer hopper 1, a control board connecting rod 3 and a quantity control board 4, wherein the quantity control board 4 arranged at the bottom of the fertilizer hopper 1 is connected with the control board connecting rod 3. The highly-efficient quantity control fertilizer apparatus adopts the cone opening hopper and the quantity control board; a cone opening of the fertilizer hopper can be directly inserted into soil at a crop root; the control board connecting rod controls the quantity control board to open and close in a linkage manner; fertilizers are leaked into a hole for fertilization when the quantity control board is opened; and single-hole fertilization quantity can be controlled by adjusting openness of the quantity control board. The highly-efficient quantity control fertilizer apparatus has the advantages of simple structure, simplicity and convenience in operation, time and labor saving and high fertilization operating efficiency.