Floating vibration reduction furrow opener having parallelogram structure with adjustable depth

The invention discloses a floating vibration reduction furrow opener having a parallelogram structure with adjustable depth, comprising an installation seat and a furrow opening assembly, wherein the upper end and the lower end of the installation seat are respectively provided with an upper pull rod and a lower pull rod, other ends of the upper pull rod and the lower pull rod are respectively and fixedly connected with the furrow opening assembly, a spring rod is fixedly installed at a position on the installation seat close to the lower pull rod, and inclined upwards to be intersected with the upper pull rod, a compression spring is sheathed on the spring rod, the lower end of the compression spring just props against the junction of the upper pull rod and the spring rod, two ends of the spring rod are respectively provided with a plurality of pin holes, a fixed pin is arranged in one of the pin holes at the two ends, the fixed pin at the upper end of the spring rod props against the upper end of a spring, and a contact surface on which the upper pull rod is intersected with the spring rod is provided with a hole matched with the fixed pin at the lower end of the spring rod. The floating vibration reduction furrow opener is reasonable in structural design, and can automatically adjust furrow opening depth according to different hardness of soil, so as to avoid rigid impact in furrow opening.