Clean-water type artificial wetland conservation method for margarya

The invention relates to a clean-water type artificial wetland conservation method for margarya. The clean-water type artificial wetland conservation method has the advantages that the margarya is conserved by selecting highland clean-water plant and ottelia acuminata wetland as the basis so as to establish a clean-water type wetland system adopting ottelia acuminata, diatom and the margarya as main producers and consumers, and the stability of the wetland system is maintained by controlling the inflow-water quality, the water exchanging period, the substrate, the water-depth range, the silicon-fertilizer adding amount and mode and the like so as to provide necessary conditions for foraging, growth and reproduction of the margarya.