不同环境条件对芦苇秆浸出液抑藻作用的影响  

Effects of Different Environmental Conditions on the Algal Inhibition of Reed Extract

作　　者：于淑池[1] 李晶玮[2] 邓红英[2] 童轶璇[2] 赵明星[2] 苏涛[2] 

机构地区：[1]琼州学院理工学院,海南三亚572022 [2]湖州师范学院生命科学学院,浙江湖州313000

出　　处：《湖北农业科学》2014年第1期73-76,共4页Hubei Agricultural Sciences

基　　金：湖州市2011年自然科学基金项目(2011YZ05)

摘　　要：研究了3种不同环境条件下（温度10～35℃、pH 7～10、氮磷比 4～72）对芦苇秆浸出液抑制铜绿微囊藻（Microcystis aeruginosa）生长的影响.结果表明,3种环境条件均对芦苇秆浸出液抑制铜绿微囊藻（以下简称“藻”）产生了不同程度的影响.培养12d后,不同温度条件下,35℃时芦苇秆浸出液的抑藻作用最强,抑制率为51.88％,10℃抑制率为42.86％,25℃抑藻作用最弱;在pH 7.0、7.5、8.0时,藻密度随pH的上升而上升,pH 8.9和9.6两组保持平缓下降,pH 9.6抑藻效果最好,培养6d后,抑制率达到了57.98％;不同氮磷比对芦苇秆浸出液抑藻作用的影响基本一致,均使藻密度呈现上升趋势,相对而言,当氮磷比为72时铜绿微囊藻生长最为缓慢.The effects of 3 different environmental conditions including temperature （10-35 ℃）, pH （7-10） and the ratio of N/P （4-72） on the inhibition of Microcystis aeruginosa were studied. The results showed that au the 3 environmental condi- tions all lead to different algal inhibitary effects of Reed extract. After 12 days of cultivating under different temperatures, the algal inhibitary function with an inhibition rate of 51.88% was the strongest when the temperature was 35 ℃. The second strongest inhibitory function with the inhibition rate of 42.86% appeared when the temperature was 10℃; the weakest point appeared when the temperature was 25℃. Under different pH conditions, the algae cell density rose in the 3 pH7-8 groups. In the pH8.9 and pH 9.6 groups the densities declined steadily. The inhibitory effect was the best in pH 9.6 group, in which 6 days later the inhibition ratio reached 57.98%. Different N/P ratios have similar algal inhibitary effects on reed ex- tract where the algae densities all rose. and microcstis aerueinosa ,rew slowest when N/P ratio was 72.

关 键 词：温度 氮磷比 芦苇秆浸出液 铜绿微囊藻(Microcystis aeruginosa) 

分 类 号：X173[环境科学与工程—环境科学]