【摘要】 研究了不同形态的氮及磷浓度对水网藻的生长及吸收去除氮磷能力的影响 ;并对水网藻在我国南方供水水库GDAR现场的生长能力作出评价。水网藻在氮磷比为 1 5左右的条件下 ,生长及氮 ,磷去除能力均为最好 ,并能优先吸收氨氮。在总氮、总磷分别为 4 .5mg/L和 0 .3mg/L时 ,对总氮和总磷的 3d去除率几乎达 1 0 0 %。水网藻在水库现场全年均能正常生长。夏、秋和冬 3个季度的生长率分别为 1 .0 51、0 .557和 0 .353。实验证明水网藻可以作为改善我国南方富营养化水库水质的一种辅助措施更多还原

【Abstract】 The absorption of nitrogen(N) and phosphorus(P) by Hydrodictyon reticulatum was studied under laboratory conditions, and field studies were carried out simultaneously in a eutrophic reservoir in south China to assess its growth ability. Results showed that the optimal N:P ratio was 15 for its growth. Hydrodictyon reticulatum absolved phosphorus very rapidly, and almost removed phosphorus off thoroughly at various N:P ratios after growing three days. Removal rates of TN were all above 74% at various N:P ratios and almost up to 100% when TN and TP concentrations were 4.5mg/L and 0.3mg/L respectively. It was found that the algae assimilated ammonium preferentially when ammonium and nitrate were simultaneously used as nitrogen sources. Hydrodictyon reticulatum grew well in the reservoir and its growth rates were 1.051, 0.557 and 0.333 in summer, autumn and winter, respectively.更多还原