环境因子对纤细角毛藻种群增长的影响  

Effects of Environmental Factors on Growth of Alga Chaetoceros gracilis

作　　者：闫爱菊[1] 吴惠仙[1] 薛俊增[1] 刘艳[1] 

机构地区：[1]上海海洋大学水产种质资源发掘与利用教育部重点实验室,上海201306

出　　处：《水产科学》2009年第11期624-627,共4页Fisheries Science

基　　金：上海市科委"长三角联合攻关"项目(062358101);上海市教委第五期重点学科项目(J50701)

摘　　要：通过对纤细角毛藻的单种培养,研究了N、P、N/P和Si对其种群增长的影响。试验结果表明,纤细角毛藻的最适生长条件为:N、P质量浓度分别为5 mg/L和1 mg/L、N/P为8∶1、Si为4 mg/L。其中N/P是影响纤细角毛藻细胞生长的关键因素,纤细角毛藻细胞生长的速率主要取决于P所占比例的高低;Si浓度的变化对纤细角毛藻细胞增长的影响不明显(P>0.05),表明Si不是纤细角毛藻细胞生长的限制因子。The effects of nitrogen, phosphorus, nitrogen and phosphorus ratio and silicon on growth of alga Chaetoceros gracilis was conducted through the monoculture. The optimal concentration for the alga growth was found to be 5 rng/L for N, 1 rng/L for P, 8 ： 1 for N/P and 4 mg/L for Si, N/P being the key factor. There was no significant effect of silicon concentration on the growth of the alga（P〉0.05）, indicating that the silicon is just an influence factor rather than a limiting factor.

关 键 词：纤细角毛藻 种群增长 限制因子 

分 类 号：Q178.1[生物学—水生生物学]