Water potential control device for simulating soil water potential

The utility model provides a water potential control device for simulating soil water potential, which belongs to the technical field of soil detection devices and comprises a water potential table, a support, a connecting water pipe and a water storage container. The water potential platform comprises a horizontal bottom surface and an upward and inward bent side surface, a through hole is formed in the horizontal bottom surface, and a silica sand sheet covers the through hole; a silica sand layer and a bearing layer are sequentially arranged on the upper surface of the horizontal bottom surface from bottom to top; the upper surface of the bearing layer is used for placing a soil core for simulating field soil; the support is supported on the bottom face of the water potential platform and enables the whole water potential platform to be in a horizontal state. The top of the water storage container is open; two ends of the connecting water pipe are respectively inserted into the water potential platform and