Abstract:

Growth characteristics of 4 microalgae in bubble condition were studied using experiment combined with production method. The results showed that bubble incubation could improve the growth rate of 4 microalgae dramatically. Under bubble condition, the maximum cell density of N. closterium,L galbana Parke 3011 ,L galbana Parke 3012 and P. subcordiformis were 2.957× 10^7, 1.7 × 10^7 ,2. 355 × 10^7 and 3.5× 10^6 cell per milliliter, and which was 3..2, 6.5, 4.1 and 5 times of the control group under the same conditions respectively. The experiment group showed significant difference with the control one in cell number, special growth rate （ SGR）, relative growth rate （RGR） and absolute growth rate （AGR）. The air-charging incubation seed can be directly used for amplified culture. Air-charging incubation can effectively prolong the growth period of the algae cell, and remarkably enhance the production efficiency.

Key words: microalgae , air-charging incubation , growth rate

摘要：

采用实验与生产结合的方法，研究了充气条件下几种饵料单胞藻的生长特性。结果表明，充气能大幅度提高4种饵料单胞藻的生长速度。在充气条件下，新月菱形藻、金藻3011、3012和扁藻的最大培养密度分别为2．957×10^7，1．7×10^7，2．355×10^7和3．5×10^5细胞／mL，分别是对照组最大培养密度的3．2倍，6．5倍，4．1倍和5倍；实 验组（充气）与对照组（不充气）在细胞数目、特定生长率（SGR）、相对生长率（RGR）和绝对生长率（AGR）等方面均有显著差异。二级充气培养的藻液可以直接扩种到大池进行生产培养，能有效延长生长时间，显著提高生产培养效率。

关键词: 单胞藻 充气培养 生长率