Standard crown shaping and trimming ruler for pyramid-shaped lychee trees

The invention discloses a standard crown shaping and trimming ruler for pyramid-shaped lychee trees. The standard crown shaping and trimming ruler comprises a vertical ruler rod, a horizontal ruler rod, a rope winding wheel and ropes. The vertical ruler rod is a telescopic rod. A drill tip is arranged at the lower end of the vertical ruler rod. Scales are arranged on the surface of the vertical ruler rod. The horizontal ruler rod is a telescopic rod. Scales are arranged on the surface of the horizontal ruler rod. One end of the horizontal ruler rod is connected with the lower end of the vertical ruler rod in a rotatable mode. The rope winding wheel is arranged at the upper end of the vertical ruler rod and is provided with a plurality of rope grooves. The ropes are arranged on the rope grooves in the rope winding wheel respectively. The positions of the ropes are measured and determined according to the trimming parameters of crowns of the pyramid-shaped lychee trees, a pyramid-shaped frame is erected around the crowns through the ropes, pyramid-shaped trimming is conducted on the crowns through manual work with the frame as the reference, the trimming effect of the standard crown shaping and trimming ruler is good, and it can be ensured that the shapes of all the trees are consistent.