To explore the effects of different types of phosphate on the growth of two waterbloom forming cyanobacteria( Microcystis aeruginosa and Anabaena flos-aquae.),four kinds of inorganic phosphorus and two kinds of organic phosphorus were used as phosphate sources in this experiment. To compare the uptake capacity of different forms of phosphorus,the content of intracellular total phosphorus and alkaline phosphatase activity were determined. The results showed that the phosphate uptake ability and alkaline phos...