Abstract: The present invention relates to a floating hydrophyte planting device, comprising a height-adjustable support, a buoyant rope, a planting net rope, a stabilizing rope and hydrophytes. The height-adjustable support comprises a fixed part and a movable part. The fixed part comprises columns and inclined stayed and fixed steel wires. A sawtooth groove is arranged on one side face of the column in the height direction and has multiple notches at different heights. The movable part comprises a twisting pull rod. The twisting pull rod is provided with a cross locking column vertical to the body of the twisting pull rod. The locking column is limited in the notch. After the twisting pull rod is twisted, the cross locking column may separate from the notch; after the twisting pull rod moves in the vertical direction and is twisted again, the cross locking column is limited in another notch.

Abstract: A solar-powered aeration device for sludge turnover and planting includes a grow bed fixed on a floating body and floats on water. A bottom of the floating body is fixedly connected with an inner pipe; an outer pipe is sleeved outside the inner pipe. The outer pipe is nested in an air chamber; a bottom of the air chamber communicates and is fixedly connected with a water inlet pipe; the water inlet pipe laterally communicates with a suction tube. An aeration ring is fixedly arranged at a bottom of the outer pipe, and the aeration tube has an air outlet pipe in communication with the outside. A movable foot is rotationally provided at a tail end of the suction tube, and the movable foot adapts to surface fluctuations to swing in a range limited by an angle limiter.

Abstract: The present invention relates to a movable aquaculture platform suitable for offshore onboard cabin culture and open culture. The aquaculture platform includes a hull with a propulsion system and an onboard control system. A recess recessed downwards based on a plane of a main deck is provided between the front and rear of the hull. Both sides of the recess are formed into an open structure corresponding to double sides of the hull. The recess is provided with a closed cage. The cage and the recess together constitute an open culture cabin. An internal space of the cage is used for culture. The hull is provided with a closed culture cabin below the recess. The present invention can flexibly switch between an onboard closed cabin culture mode, an onboard open cage culture mode and a mixed mode thereof according to different working conditions.