Method for jointly building subaqueous landscape ecosystem by using submerged plants mainly comprising tape grass and photosynthetic bacteria

The invention discloses a method for jointly building a subaqueous landscape ecosystem by using submerged plants mainly comprising tape grass and photosynthetic bacteria, and relates to the field of water purification and park landscape. The method comprises the main steps: A) detecting water quality; B) eliminating weeds; C) throwing in the photosynthetic bacteria; D) implanting the submerged plants. The method has the characteristics that the water body purifying effect is good, the effect at a later stage is stable, the energy consumption is low, the method is simple and easy to operate and the like, the eutrophication phenomenon of landscape water bodies can be eliminated quickly and effectively, and the growth of cyanophytes is restrained, so that the transparency of the water bodies achieves more than 2 m, the water quality of the water bodies achieves the standard of III category water, secondary pollution cannot be generated, and the green, artistic and rich subaqueous landscape ecosystem can also be