作　　者： ; ; ; ; ; ; ; ; ; ;

机构地区： 华中师范大学生命科学学院

出　　处： 《华中师范大学学报（自然科学版）》 2003年第1期93-98,共6页

摘　　要： 研究了小型开放系统中不同浓度的铵氮对微囊藻生长的影响.在4个分别命名为N1、N2、N3、N4的水箱中,除铵氮浓度不同,其它的条件基本一致,且正磷酸盐设为足量,达到1.65mg·L-1,4个水箱中铵氮浓度分别为5.23mg·L-1,12.43mg·L-1,22.5mg·L-1,37.28mg·L-1,结果表明,铵氮浓度小于2.54mg·L-1时对微囊藻的生长起抑制作用;当浓度在7mg·L-1～15mg·L-1时,微囊藻呈暴发性生长;高于19.25mg·L-1的铵氮抑制微囊藻的生长. This paper presents the effect of ammonium in different concentrations on the growth of Microcystis in the small open systems. Except different ammonium, the similar grown conditions was provided and phosphates was enough for the growth of Microcystis with concentration 1.65 mg·L-1.The initial ammonium concentrations were 5.23 mg·L-1, 12.43 mg·L-1, 22.50 mg·L-1, 37.28 mg·L-1 in the four water tanks named N1,N2,N3 and N4 respectively. The result indicated that the ammonium concentration below 2.54 mg·L-1 limited the growth of Microcystis, that ranging from 7 mg·L-1 to 15 mg·L-1, brought about Microcystis growth rapidly, and the growth of Microcystis was inhibited by the ammonium with concentration above 19.25 mg·L-1.

关 键 词： 小型开放系统 铵氮 微囊藻 生长抑制作用 水体富营养化 水华 水环境污染

领　　域： [环境科学与工程]