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不同藻类生长、繁殖的生态条件是不尽相同的。利用球等鞭金藻（Ｉｓｏｃｈｙｓｉｓｇａｌｂａｎａ）与其污染藻——卵形小球藻（Ｃ．ｏｖａｌｉｓ）生态习性的差异，在培养过程中对藻液ＰＨ值进行人工控制，使其保持在球等鞭金藻生长的适宜范围之内，从而达到促进球等鞭金藻生长，控制卵形小球藻繁殖之目的。本文通过对３组污染程度不同的藻液的对比培养实验发现，在温度范围１７～１８．４Ｃ、照度范围３０００～８０００Ｌｕｘ条件下，经过５～７天培养，试验组球等鞭金藻最终细胞密度均高于对照组球等鞭金藻细胞密度：而试验组卵形小球藻细胞密度均在对照组卵形小球藻细胞密度的５０％以下。
Different algae growth, breeding ecological conditions are not the same. Using the difference in the ecological habits of Isochysis galbana and its polluted algae - C. ovalis, the pH of the algal solution was manually controlled during culture to keep it in place Algae within the appropriate range of growth, so as to promote the growth of Isochrysis galbana and control the propagation of Oval chlorella. In this paper, the three groups of different degrees of contamination of algae culture experiments found that in the temperature range of 17 ~ 18.4C, the illumination range of 3000 ~ 8000Lux conditions, after 5 to 7 days of culture, the test group Isochrysis algae final cell The density of the cells was higher than that of the control group Isochrysis galbana cell density: while the cell density of the test group was below 50% of the cell density of the control group.