To improve water survival and ornamental value at ornamental plants under water culture, six species of ornamental plants was comparatively studied, Fatshedera lizei ,Monster deliciosa , Philodendron selloum , Alocasia macrorrhiza (Linn.) Schott were planted under the pisculture, the illumination, the dark condition, Sansevieria trifasciata were planted under increases the oxygen and static condition, Echinocactus grusonii were planted under darkness and the illumination condition. The results showed that the different plants root--speed vast...