The invention relates to a fertilizing, spraying, ridging and full-filming
machine for potato. The
machine which comprises a frame, a speed changer, a fertilizing
assembly, a spraying
assembly, a ridging
plough, a filming
assembly and an upper soil conveying apparatus is characterized in that: a lower support of the fertilizing assembly is arranged above the center of the front part of the frame, the speed changer is arranged behind the lower support, the front end of the speed changer is connected with external power through a crossed universal transmission shaft, and one side of the speed changer is provided with a
sprocket wheel for outputting power of the speed changer; and the
sprocket wheel transmits the power to make all parts of the
machine to run. The machine of the invention, which integrates ditching, ridging, fertilizing, spraying, filming and film side soil casing together, allows artificial time and labor consuming operations of soil working, fertilizing, spraying and the like before filming to be mechanized, the production efficiency to be greatly improved, and the
ridge shape to be uniform by adding a
ridge shaper, so films are tightly clung to ridges, and present disadvantages of loose film connection, film damage, film tearing, severe
cracking and the like are overcome. Experiment determinations show that the machine allows 0.33-0.4 hectares of soil to be filmed each hour, so the work efficiency of the machine is about six times higher than the manual work efficiency.