Study on the Transplantation and Propagation Effects of High-quality Submerged Plant in Bohu Lake

LIU Quan-mei et al (Anqing Bohu Quanmei Crabs Co.,Ltd.,Susong,Anhui 246500)

Bohu Lake;Submerged plants;Potamageton crispus;Hydrilla verticillata;Vallisneria natans;Transplantation and propagation

[Objective] The research aimed to discuss the transplantation and propagation effects of submerged plants in Bohu Lake.[Method] During 2008-2009,the water area of Bohu Lake with water depth of 0.5-1.5 m was selected as the demonstration area of transplanting and propagating the submerged plants.Using sowing,mesh bag-hanging seeding method and other method,Potamogeton crispus,Hydrilla verticillata,Vallisneria natans and other high-quality submerged plants were transplanted and propagated.[Result] When the sowing rate of P.crispus squamous buds was 15 000 g/hm2,its propagation biomass was 3 935 g/m2.When the sowing rate of both H.verticillata seed buds and V.natans seeds were 3 750 g/hm2,the total biomass of the submerged plant communities in the transplantation and propagation area was 2 573 g/m2.The average biomass of H.verticillata and V.natans was 1 352.5 and 631.3 g/m2 respectively.[Conclusion] It had a significant effect to transplant and propagate high-quality submerged plants P.crispus,H.verticillata and V.natans in Bohu Lake in suitable water depth.