Effects of photoperiod and irradiance on growth of Heterosigma akashiwo
This paper, the Heterosigma akashiwo as the test object was selected, and sets five different photoperiod (24L:0 D, 18 L:6 D,12 L: 12 D,6 L: 18 D,0 L:24 D) to determine the growth of H. akashiwo at two different irradiance (3 000 lx ,12 000 lx). In order to prevent the growth of H. akashiwo,the most suitable photoperiod for its growth was found out. The result showed that when the irradiance was 3 000 lx,H. akashiwo would continue to grow about 9-14 days,and then into a recession. When the irradiance was 12 000 lx,H. akashiwo would continue to grow about 16~20 days,and then into a recession. And regardless of the irradiance is 3 000 lx or 12 000 lx.the photoperiod of 18 L: 6 D is the most suitable photoperiod for the growth of H. akashiwo,and under the photoperiod of 0 L: 24 D H. akashiwo does almost not grow.
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万方数据
维普
