中文摘要：

分别研究了水网藻在人工培养液培养下，微藻在以湖底泥为营养源培养下，藻代谢总糖浓度与溶液中总氮浓度、总糖与总磷浓度随培养时间的变化情况，结果表明两两均呈现一种反向变化关系。氮、磷是藻的重要营养组分，其浓度增高，有利于促进藻生长，伴随着溶液较低的糖浓度。在严重氮、磷限制条件下，藻的蛋白质合成可能停止，但细胞外多糖的生产仍以较高的速度进行，从而导致溶液总糖浓度的增加。

英文摘要：

The changes of total nitrogen and total phosphorus concentration in solutions with total saccharides released by two kinds of algae, the Hydrodictyon reticulatum in artificial culture medium and the micmalgae in a medium whose nutrient is supplied by bed mud from lakes, were studied respectively. It shows that both of the concentration have opposite changing directions. Nitrogen and phosphorus are important nutrient substances for the growth of algae. The higher concentration of P and N is favorable for algae growth, followed by the decrease of total saccharides concentration. Severe P and N limitation would probably lead to a suppressed synthesis of proteins and a higher production of extracellular polysaccharide, which would promote the increasing of total saccharides concentration.