Testing device capable of coupling in-situ root system drawing and root system soil shearing and seepage functions

The invention relates to a testing device capable of coupling in-situ root system drawing and root system soil shearing and seepage functions. A support system is composed of a top plate, a stand column channel steel frame, a first platform, a second platform, a third platform and braking pulleys. The organic glass soil column device is composed of a segmented soil column cylinder, a flange, a funnel and a liquid containing cup. The automatic water head stabilizing system consists of a Markov bottle, an electric water valve, a controller and a liquid level sensor; the multifunctional direct shear drawing lifting system is composed of a vertical pressurization drawing system, a horizontal pressurization drawing system and a horizontal clamp device. The data acquisition system comprises a tensiometer, a moisture sensor, a liquid level sensor, a vertical vibrating wire type displacement meter, a horizontal vibrating wire type displacement meter, a vertical pressure sensor, a horizontal pressure sensor, a data ac