• 关键词：络氨铜  铜绿微囊藻  景观水体  叶绿素a  藻华

• 基金项目：国家科技重大专项课题(No. 2009ZX07101-011)

• 王蕾
• 环境保护部南京环境科学研究所,国家环境保护农药环境评价与污染控制重点实验室,南京 210042

• 石利利
• 环境保护部南京环境科学研究所,国家环境保护农药环境评价与污染控制重点实验室,南京 210042

• 蔡道基
• 环境保护部南京环境科学研究所,国家环境保护农药环境评价与污染控制重点实验室,南京 210042

• 摘要：研究了络氨铜对不同生长期的典型蓝藻(铜绿微囊藻,Microcystis aeruginosa)15 d生长抑制影响的基础上,开展了络氨铜对不同时期景观池水中叶绿素a含量的影响,并跟踪测定了其中的有效铜离子浓度变化.结果表明,络氨铜在0.10 mg·L^-1(络氨铜的有效浓度,下同)时,可完全抑制适应期铜绿微囊藻的生长;在4 d内显著降低4月份景观池水中叶绿素a的含量(p<0.05)并抑制藻类的生长.络氨铜对铜绿微囊藻适应期的生长抑制率高于其对数生长期,对4月份景观池水中叶绿素a的去除效果优于其对3月份和5月份池水中叶绿素a的去除效果.因此,在藻类生长早期投加络氨铜控藻有利于达到快速、高效控藻的目的.

• Abstract：The effect of copper sulfate-ammonia complex on Microcystis aeruginosa (the dominant algae of Cyanobacteria algal bloom) was determined by a 15-day prolonged growth inhibition test in a landscape water sample. Elimination of chlorophyll-a was also studied. The results indicated that copper sulfate-ammonia complex at 0.10 mg·L^-1 could completely inhibit the growth of Microcystis aeruginosa at the lag phrase and significantly decrease the concentration of chlorophyll-a in the landscape water sample in 4 days. Copper sulfate-ammonia complex showed a greater algaecidal effect for Microcystis aeruginosa at lag phrase than at log phrase, and a greater elimination effect for chlorophyll-a in the landscape water sample collected in April than in March and May. Therefore, better algaecidal effects can be achieved when the copper sulfate-ammonia complex was applied in early phrase of algal bloom.

• Key words：copper sulfate-ammonia complex  Microcystis aeruginosa   landscape water  chlorophyll-a  algal bloom

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