Three row vibration deep loosener

The utility model relates to a tractor-traction loosen soil machine which carries out asthenia and sthenia coexistence and interval loosen soil cultivation method. The utility model is characterized in that: three pairs of left, middle and right parallel splint beam frames with hanging frame are provided in parallel with three vibration lever draft arms for vibrating and loosening soil for the loosen plow at the back end. Through inner and outer cranks and horizontal double-vibration shaft and a connection-shaft plate, three vibration lever draft arms are driven by a drive crank which is connected with the power output shaft of the tractor. The utility model has the advantages of reasonable structure, small traction resistance, not hanging hay, which is an ideal machine matched with the middle-size tractor to make asthenia and sthenia interval cultivation turning soil.