BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a bottom watering plant food container for a barb. The present invention relates to a biodegradable resin bottle which is formed of a thin biodegradable resin so that its top face is opened and its bottom face is closed, and has an engagement flange protruding outward along the circumferential direction of the upper region, A plurality of first plant root penetrating holes formed on the first step surface and a sloped surface between the first step surfaces to form a plurality of fine flow paths and installed at a predetermined depth in the blood vessel of the surface of the planting target surface； And is formed as a thin biodegradable resin so that its top diameter is smaller than the opening diameter of the outcrops and at least one through hole is formed on the bottom surface, and at least a plurality of inwardly protruding A second plant root penetrating hole is formed on the second step surface so that the first plant root penetrating hole and the second plant root penetrating hole are mutually penetrated in a state where the second step is raised on the upper surface of the first step, A flower pot provided in the tub； At least a plurality of water absorbing members inserted into the through holes so that the upper region faces the upper side of the bottom surface and the lower region faces the lower region of the bottom surface； A plurality of through holes are formed in the concave portion along the circumferential direction of the lower outer region and a plurality of through holes are formed in the concave portion along the circumferential direction of the lower outside region, And a mating lid having a fixing piece which is hooked onto the outer surface of the hood. In this way, unlike the prior art, a large number of through-holes can be provided at the concave portion along the outer circumferential direction of the mulching lid so that the outflow can be dire
