Effects of Flow Velocity on Growth of Microcystis aeruginosa in Taihu Lake

Effects of flow velocity on growth of Microcystis aeruginosa incubated in water from the Taihu Lake were studied in laboratory.Results show that when the experimental conditions were set as 25 ℃ in temperature,3 300 lx in light intensity and 10 h/14 h in light cycle,the alga grew best with the flow velocity being 30 cm·s^-1.If the flow velocity rose or fell,growth of the alga was affected to a varying extent,and to a significant extent when the flow velocity reached to or beyond 50 cm·s^-1.