The rotary tiller 1GQN series is a plowing and cultivating machine that can complete the plowing and harrowing work with the tractor. It has strong ability to break up the soil, and one operation can make the soil broken up, the soil and fertilizer mixed evenly, and the ground leveled, so as to meet the requirements of dryland sowing or paddy planting, which is conducive to striving for the farm time, improving the work efficiency, and making full use of the power of the tractor. It has the functions of breaking the subsoil layer, restoring the structure of soil tillage, improving the ability of soil water retention and moisture conservation, eliminating some weeds, reducing pests and diseases, leveling the ground surface and improving the standard of agricultural mechanization.