Nutrient limitation of phytoplankton was studied in the water collected from Liusha Bay in spring and summer of 2008 by indoor nutrient addition experiments.The results showed that there was no significant promotion between the control and the single nutrient addition treatment of nitrogen,phosphorus,silicon and iron in both spring and summer;but multiple nutrient addition treatment of nitrogen,phosphorus and nitrogen,phosphorus plus silicon significantly promoted the growth of the phytoplankton,the maximal...