Precise loss reduction mowing machine for yield measurement of alfalfa in plot

The invention provides an alfalfa plot yield measurement and accurate loss reduction mowing machine which comprises a U-shaped frame, a cutting mechanism is arranged on the outer side of the U-shaped frame, a conveying mechanism is arranged on the outer side of the cutting mechanism, and a walking wheel assembly is arranged below the U-shaped frame; the cutting mechanism comprises a first cutting plate, the bottom face of the first cutting plate is fixedly connected with the upper surface of the U-shaped frame, a second cutting plate is arranged below the first cutting plate, the bottom face of the second cutting plate is slidably connected with the upper surface of the U-shaped frame, a connecting plate is movably hinged to the left side face of the second cutting plate, and a cam is movably hinged to one end of the connecting plate. According to the alfalfa plot yield-measuring and accurate loss-reducing mowing machine provided by the invention, cutting of alfalfa forage grass is realized through the cuttin