Field irrigation and drainage system and composite material wall

The field irrigation and drainage system comprises composite material walls, an active transmission unit and a transition circulation unit, the composite material walls are hollow water-permeable wall bodies, water-permeable guide pipes are arranged at the bottoms of inner cavities of the wall bodies, the composite material walls are arranged in parallel in pairs, the transition circulation unit comprises water storage wells which are communicated through pipelines, and the water storage wells are communicated with the water-permeable guide pipes; the active transmission unit is arranged between the two composite material walls, and water pumped by the submersible pump is directly irrigated to a field; the plurality of transition circulation units are communicated along the arrangement direction of the composite material wall; the composite material wall and the transition circulation units are distributed at intervals in the direction perpendicular to the composite material wall to form the whole field drain