Fecha de publicación: 22/08/2017 Fuente: WIPO "tobacco agriculture" The utility model discloses an experimental apparatus convenient to plant is to material composition accumulation research, including growing seedlings the pond, educate seedling tray, the drawing liquid pump, the liquid storage pot, the sampling tube, the perpendicular to bottom of the pool of growing seedlings in the pond is provided with a plurality of baffles and will grows seedlings the pond and cut apart into a plurality of same volume's nutrition groove, every nutrition groove all is provided with the filling opening, the leakage fluid dram, the sample connection, and dispose solitary liquid storage pot, the filling opening connects gradually drawing liquid pump and liquid storage pot through the charging line, the leakage fluid dram is connected with the liquid storage pot through drainage tube, a seedling tray that educates who takes the bottom plate is all cup jointed on groove in every nutrition in pond of growing seedlings, it is provided with seedling culturing hole to educate seedling tray, be provided with the endocentric aperture with seedling culturing hole on the bottom plate, educate the seedling tray floatability in solution.