Multifunctional pointing device for herbicide field effect tests in the field

The invention belongs to the field of instruments for herbicide effect tests in the field, in particular to a multifunctional pointing device for the herbicide field effect tests in the field. The device comprises a square frame, support legs, a sign board, and a counting plate, wherein counting grids extend from the frame inwards in parallel, and the counting grid and the frame are in the same plane; the support legs can be inserted into soil and extend from four corners of the frame in a vertical downward direction, and an included angle between the length direction of the support legs and the length direction of the frame is 90 degrees; a sign rod extends from the support leg on the upper left corner along the right vertical upward direction of the frame, the sign rod is connected withthe frame by hinges, the sign board extends from the top of the sign rod in parallel, and an included angle between the length direction of the sign board and the length direction of the sign rod is 90 degrees; and a counting