氮、磷、铁、硅对简单双眉藻生长的影响

用单因子对比实验和正交实验的方法研究了氮、磷、铁和硅对简单双眉藻生长的影响。结果表明:简单双眉藻对于硝酸钠和尿素均能很好地利用,其相对生长常数无显著差异,对柠檬酸铁和三氯化铁的利用亦无显著差异,FeC6H5O7-Fe的适宜浓度为0.1～0.5mg/L;Na2SiO3-Si的适宜浓度为0.8～1.6mg/L。正交实验表明,简单双眉藻氮、磷、铁、硅的最佳浓度(mg/L)配比为6.6∶0.66∶0.1∶0.4。

Effect of Nitrogen, Phosphorus, Iron and Silicon on Growth of Amprhora exigua

The influence of nitrogen, phosphorus, iron and silicon nutrition on the growth rate of Amprhora exigua was studied by single factor and orthogonal experiment. The results showed that Amprhora exigua well utilized by sodium nitrate and ferric citrate did not differ significantly in Kˊ from urea solution and ferric chloride, respectively. The optimum concentration FeC6H5O7-Fe and Na2SiO3-Si were 0.1~0.5 mg/L and 0.8~1.6 mg/L, respectively. The orthogonal test of the four factors of nitrogen, phosphorous, iron and silicon showed that the optimal concentration ratios (mg/L) of the four nutrients were as follows: 6.6∶0.66∶0.1∶0.4 .