Rapid and accurate identification device for hardness of cotton germplasm resource main stem and use method of rapid and accurate identification device

The invention belongs to the technical field of cotton stem hardness measuring devices, and particularly relates to a cotton germplasm resource stem hardness rapid and accurate identification device and a use method thereof.The cotton stem hardness rapid and accurate identification device comprises a fixing part arranged on the ground, a vertically-arranged main scale rod, a horizontally-arranged pushing and pressing rod sliding rail and a pushing and pressing rod with isolation teeth; the push-press rod with the isolation teeth is perpendicular to the push-press rod sliding rail, the fixing part is fixedly connected to the bottom end of the main scale rod, the push-press rod sliding rail is vertically connected to the side wall of the main scale rod in a sliding mode, and a first clamping assembly used for adjusting the height is arranged between the push-press rod sliding rail and the main scale rod. The middle end of the push-press rod with the isolation teeth is horizontally connected to the push-press ro