【摘要】 利用白、红、绿、蓝4种LED作为光源,研究在24 h/0 h、18 h/6 h、12 h/12 h、6 h/18 h(L/D)这4组光照周期下铜藻生长对不同光质光源的响应。结果表明:各LED光源下,铜藻生物量累积峰值均出现在24 h/0 h(L/D)的光照周期中;在非连续光照下,蓝光LED光源促进铜藻生长的效果最佳。本研究还测量并分析了铜藻的表面吸收光谱和4种LED光源的发射光谱,发现铜藻在蓝光与红光区各有一个吸收峰,且蓝光区的波峰与红光区的波峰差异显著,蓝光区的波谱宽且平缓,而红光区的则窄且陡峭。因此,蓝光LED光源可满足铜藻生长所需光波,并可作为铜藻人工养殖的补充光源使用。更多还原

【Abstract】 In this study,4 kinds of LED( white,red,green and blue) were tested as light sources for Sargassum horneri cultivation under 4 photoperiods( 24 h/0 h,18 h/6 h,12 h/12 h,6 h/18 h,L/D). It was shown that for all LED light sources,maximum biomass accumulation of S. horneri were achieved under the photoperiod of 24 h/0 h( L/D). The surface absorption spectrum of S. horneri and the emission spectrum of 4 LED light sources were also analyzed. The surface absorption spectrum of S. horneri showed a wide peak in blue emission region and a sharp peak in red emission region,respectively. Therefore,blue-LED light could satisfy the growth of S. horneri and would be an ideal supplementary light for S. horneri cultivation.更多还原