[Retracted] Effects of Nitrogen and Phosphorus Nutrients on the Proliferation of Heterosigma Akashiwo under the Background of Mobile Big Data

Table 3

Initial concentrations of nitrogen and phosphorus used in the experiment.

Factor level phosphorus	Concentration
	1	2	3	4	5	6
Nitrogen	0.5	1.5	2.5	5	10	15
Factor level	25	50	100	200	300	500