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浮游植物主要指悬浮在水体内的单细胞藻类。它们是自然水域中初级生产力的主要承担者,单是全世界海洋水域,就能生产31×10~9吨有机碳,相当于全世界陆地生产力的二倍。它是水域中鱼类及其他水生动物的基础饵料。在目前的技术条件下,人类还不可能直接利用这些天然浮游植物资源,据估算,在天然水域中,即使每升水中有50万个大型硅藻细胞这样丰富的资源,要获得1公斤干品的话,就得过滤2,500立方米的水。故直接利用天然浮游植物是极不经济的。因而人工培养浮游植物的研究就引起人们广泛的重视。Beijerinck早在1890年就用培养细菌的方法进行了小球藻(Chlorella vulgaris)和其他单细胞绿藻的分离培
Phytoplankton mainly refers to single-cell algae suspended in water. They are the primary bearers of primary productivity in natural waters and can produce 31 x 10? 9 tonnes of organic carbon alone in the world’s oceans, equivalent to twice the world’s land productivity. It is the basic bait for fish and other aquatic animals in the water. Under the current technological conditions, it is impossible for humans to directly utilize these natural phytoplankton resources. It is estimated that in natural waters, even if there are 500,000 large diatomite-rich resources per liter of water, 1 kg of dried product You have to filter 2,500 cubic meters of water. Therefore, the direct use of natural phytoplankton is extremely uneconomical. Therefore, the artificial cultivation of phytoplankton research has aroused widespread attention. Beijerinck as early as 1890 with the method of culture of bacteria Chlorella vulgaris (Chlorella vulgaris) and other single-cell green algae culture