The invention discloses a combined operation
machine and relates to the technical field of agricultural machines. The combined operation
machine comprises a frame and a farming bracket installed at the
tail of the frame through a lifting pull rod. A
subsoiler, a rotary blade, a grading dragging plate and a furrow opener are sequentially arranged on the framing bracket from front to back. A
fertilizer storage box is installed on the farming bracket and provided with a soil feeding
pipe and a planting feeding
pipe, wherein the soil feeding
pipe extends to the position between the
subsoiler and the rotary blade, and the planting feeding pipe extends to the position behind the furrow opener. A seed
discharge box is arranged at the position, behind the planting feeding pipe, of the farming bracket, and a
soil sealing roller is arranged behind the seed
discharge box. A
straw smashing device is installed at the front end of the frame. Compared with the prior art, the combined operation
machine can complete
straw smashing and returning, land subsoiling, rotary
tillage, flattening, furrow opening,
fertilizer applying and seeding at a time, so that production efficiency is improved substantially; through the combined operation machine, soil is prevented from being compressed repeatedly, so that the ventilation and water permeability of the soil are maintained, and seeds are promoted to sprout and grow.