Foldable grape trellis for grapes in soil-buried area and cultivation method thereof

The invention discloses a foldable grape trellis for grapes in a soil-buried area, and belongs to the technical field of grape cultivation. The grape trellis comprises a cultivation frame and foldable upright posts arranged along the same ridge side at intervals. Each upright post comprises a fixed section buried in soil and a folding section hinged to the top of the fixed section, the folding sections can be folded in the direction of the adjacent foldable upright posts on the same ridge side, and a first locking mechanism is arranged between each folding section and the corresponding fixed section. The cultivation frame is erected on the foldable upright posts. Main grape vines are always left on the cultivation frame, in winter, the foldable upright posts are put down, buried with soil and covered with a cloth to achieve overwintering after being buried with the soil, in spring, the foldable upright posts are erected to achieve grape racking, the tedious steps that the grape vines get off the frame and get