Crop ridge surface rainwater collection planting device and method

The invention belongs to the technical field of agricultural planting, and relates to a device and a method for crop ridge surface rainwater collection planting. The device comprises a ridging device and an on-film soil covering and punching device, the ridging device comprises a ridger and a ridger which are sequentially connected front and back; the ridging machine is used for forming ridge surfaces, and the ridging device is used for shaping the ridge surfaces into a downwards-sunken circular arc shape; the film earthing and punching device comprises a frame body mechanism, and a soil throwing mechanism, an earthing mechanism and a punching mechanism which are arranged on the frame body mechanism; the soil throwing mechanism is used for turning and throwing soil between two ridges, the soil covering mechanism is used for blocking the turned and thrown soil and covering the soil on the ridge surfaces, and the punching mechanism is used for punching the films covered on the ridge surfaces. According to the i