活性磷对浒苔生长和叶绿素含量影响的初步研究

Study on the Effect of Phosphorus on Growth rate and Chlorophyll content of Enterpmorpha prolifera

该试验以大型海藻浒苔(Enterpmorpha prolifera)为研究对象,设置5个活性磷浓度梯度,研究活性磷对浒苔生长和叶绿素含量的影响。试验结果表明:添加活性磷对浒苔的生长有促进作用,而且添加磷的浓度不是越高越好,有个最适值(200μmol/L),在此浓度下浒苔的生长率最高为13.13%,超过这个值反而对浒苔的生长起到抑制作用。添加活性磷对浒苔叶绿素a、b的积累有一定的影响,相对于对照组的叶绿素含量都有提高。溶液中pH值的趋势是一致的,都是随着培养天数的增加,pH值一直呈上升趋势,最后达到9.5左右。溶液中活性磷的浓度一直呈下降趋势,经过1 d之后磷的浓度下降超过了90%。

In this paper,studies on the effect of phosphorus on growth rate and chlorophyll content of Enterpmorpha prolifera were conducted under different phosphorus concentration.The results showed：Phosphorus had certain effect on the growth rate and chlorophyll a、b content,both were higher than the controlled groups.The growth was more quicker with the higher phosphorus concentration（200 μmol/L）,but the growth would drop when the concentration was higher than 200 μmol/L.The pH value was keeping growing higher to 9.5.The phosphorus concentration was dropping,and was absorbed more than 90% after one day culture.