几种植物去除高度富营养化湖水中氮磷及抑藻效果的初步研究

A Primary Study on the Removal of Eutrophication and Restraint of Algae by Some Plants

摘要: 利用漂浮水生植物和陆生植物对去除超富营养化湖水的总氮总磷能力及抑藻效果进行研究(10月～11月),在45d的培养周期中,水龙、水禾、凤眼莲、竹叶菜对总氮的平均去除速率用平均生物量法计算分别是31.91、32.91、21.65、38.27mg.kg-1.d-1,去除率分别是80%,77%,87%,86%;对磷平均去除速率用平均生物量法计算,分别是6.45、2.58、4.01、3.97mg.kg-1.d-1,去除率分别是85%,51%,94%,77%;研究了这些植物的生长速率、抑藻效果、干物质含量,初步探讨了乡土物种在水质净化中的应用。

Abstract: The capacity of TN,TP removal and restraint of algae by some floating plants and land plants in super-eutrophic water were studied (in Oct-Nov. month).The TN removal rate by Jussiaea repens, Hygroryza aristata,Eichhornia crassipes, Ipomoea aquatica, based on the average biomass were 31.91, 32.91, 21.65, 38.27 mg·kg^-1·d^-1, and the TN removal ratio were 80%,77%,87%,86% respectively. The TP removal rate by Jussiaea repens, Hygroryza aristata, Eichhornia crassipes, Ipomoea aquatia,based on the average biomass were 6.45, 2.58, 4.01, 3.97 mg·kg^-1·d^-1, and the TP removal ratio were 85%,51%,94%,77%, respectively. Also The growth rate, restraint of algae and dry matter of 4 plants were investigated, and the (possibility) of application of native species was explored.