Horizontal transplanting machine and transplanting method for sweet potato seedlings

The invention relates to a sweet potato seedling horizontal transplanter and a transplanting method, and the sweet potato seedling horizontal transplanter comprises a rack, a rotary tillage ridging device, a fertilizing device, a seedling planting device, a film mulching device and a film breaking device which are located on the rack, and also comprises an earthing device for earthing sweet potato seedlings and mulching films, and a drip irrigation device for laying drip irrigation belts. When the machine is used, the rotary tillage ridging device is used for ditching and soil loosening, and the fertilizing device is used for fertilizing; then the sweet potato seedlings are horizontally planted in the direction perpendicular to the ridge direction through a seedling planting device, and the sweet potato seedlings are covered with soil through a soil covering device; then, drip irrigation is laid above the sweet potato seedlings through the drip irrigation device, the sweet potato seedlings and the drip irriga