Especially when the light intensity was 150 μmol·m−2 s−1,algae with an average initial specific light intensity of cell of 750×10−6μmol·m−2s−1 per cell grew sharply during 2 to 6 days and obtained the biomass productivity of 0.35 g·L−1 d−1 during this logarithmic phase. Orazova etal.[16] also reported that the increasing of the light intensity promoted the relative growth rate of cultures and reduced doubling time of cell population (atlista twice)