The invention discloses a soilless culture floating type vegetable planting mechanism special for a fishpond and an application method of the mechanism. The soilless culture floating type vegetable planting mechanism comprises a floating frame
pipe and a transverse floating
pipe, a set of longitudinal floating pipes is installed at the positions, close to the rear side, of the middles of the two ends of the outer surface of the transverse floating
pipe, and auxiliary air pipes are installed at the positions, close to the middle of the front side, of the outer surface of the transverse floatingpipe. A planting floating plate is installed at the middle position of the upper portion of the floating frame pipe, and a
lap joint foot stand is installed at the middle position of the upper portion of the planting floating plate. By means of the mechanism, it can be ensured that part of roots cannot be soaked in water for a long time, root rotting is avoided, sufficient
oxygen of roots is kept, the separated planting function of multiple kinds of vegetables is achieved, the soaking depth of vegetable roots in water is controlled, the mechanism is prevented from overall rolling over, meanwhile, the rotting phenomenon of vegetable roots can be effectively avoided, circulation of internal water is accelerated,
oxygen solubility in water is improved, sufficient
oxygen supply to roots is ensured, root
necrosis is avoided, and
normal growth of vegetables is ensured.