Abstract: The restoration of submerged macrophytes is one of the effective measures to recover the contaminated water ecological system. The planting measure is the most critical approach to restore a large area submerged maerophytes in short time. In this paper, Potamogeton crispus, Vallisneria, and Hydrilla verticillata were planted by cutting, sinking and seeding in shallow zones at Maojiabu and Yuhu sublakes which is the west part of Xizi Lake. The results have shown that the survival rates of P.crispus by sinking is 71.1% higher than seeding; the survival rates of Vallisneria by cutting is 84.3% and 87.8% higher than sinking and seeding; the survival rates of H.verticillata by cutting is 69% higher than seeding. There was no significant difference in the final biomass of plant by three planting patterns.

Key words: submerged macrophyte, planting pattern, survival rate, biomass