论文部分内容阅读
采用单养和混养方法研究不同氮磷比培养条件下(1∶1、10∶1、25∶1、50∶1、75∶1、100∶1、150∶1)对米氏凯伦藻(Karenia mikimotoi)和中肋骨条藻(Skeletonema costatum)生长和种间竞争参数的影响。结果表明:单养时,米氏凯伦藻和中肋骨条藻的最适氮磷比都为50∶1(N:150μmol/L、P:3μmol/L),米氏凯伦藻和中肋骨条藻分别在氮磷比值为25~75、25~150之间能保持较好的生长。混合培养条件下,两种微藻的环境负载能力(K)、生长率(r)都低于单独培养。中肋骨条藻在各个氮磷比条件下的竞争中完全处于优势,中肋骨条藻对米氏凯伦藻的抑制参数β均高于米氏凯伦藻对中肋骨条藻的抑制参数α,并且β:α随着氮磷比的升高而升高。
Monoculture and polyculture methods were used to study the effects of different ratios of nitrogen and phosphorus on the growth of Kyle mylonii (1: 1, 10:1, 25:1, 50:1, 75:1, 100:1, 150:1) (Karenia mikimotoi) and Skeletonema costatum and interspecific competition parameters. The results showed that the optimum N / P ratios were 50:1 (N: 150μmol / L, P: 3μmol / L) Striped algae respectively in the nitrogen and phosphorus ratio of 25 ~ 75, 25 ~ 150 to maintain good growth. Under the mixed culture conditions, the environmental load capacity (K) and growth rate (r) of the two microalgae were lower than that of the culture alone. Skeletonema costatum in all the conditions of nitrogen and phosphorus competition is completely in advantage, Skeletonema costatum Killer’s algae inhibition parameters β are higher than those of Kyle mulchein Skeletonema costatum inhibition parameters α, And β: α increases with the increase of N / P ratio.