草-溞生物组合对农田周边富营养化水体中浮游植物的影响

doi:10.14088/j.cnki.issn0439-8114.2021.03.008

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (3): 42-49.doi: 10.14088/j.cnki.issn0439-8114.2021.03.008

草-溞生物组合对农田周边富营养化水体中浮游植物的影响

张春雪¹, 魏孝承¹, 王晗阳^1,2, 郑向群¹, 杨波¹

1.农业农村部环境保护科研监测所,天津 300191;
2.天津城建大学,天津 300384

收稿日期:2020-07-31 发布日期:2021-02-25
通讯作者: 杨波,女,助理研究员,博士,主要从事乡村环境保护研究,（电子信箱）yangbopipi@126.com。
作者简介:张春雪（1986-）,女,河北廊坊人,助理研究员,博士,主要从事乡村环境保护研究,（电话）022-23610078（电子信箱）zhangchunxue215@163.com
基金资助:
中国农业科学院科技创新工程项目（2021-cxgc-zxq）

Study on the effects of phytoplankton in eutrophic water around farmland by aquatic plants and Daphnia magna

ZHANG Chun-xue¹, WEI Xiao-cheng¹, WANG Han-yang^1,2, ZHENG Xiang-qun¹, YANG Bo¹

1. Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China;
2. Tianjin Chengjian University, Tianjin 300384, China

Received:2020-07-31 Published:2021-02-25

摘要/Abstract

摘要： 为研究草-溞生物组合对农田周边富营养化水体中浮游植物的影响,以大型溞（Daphnia magna）作为滤食性动物代表,狐尾藻（Myriophyllum aquaticum）和金鱼藻（Ceratophyllum demersum）作为沉水植物代表,考察单一生物及2种生物组合对农田周边富营养化水体的修复作用。结果表明,大型溞对浮游植物密度、蓝藻门密度、叶绿素a浓度及微囊藻毒素抑制显著,且低密度（25 ind/L）抑制作用较强,试验后期（15~20 d）抑制作用减弱,试验结束（20 d）时,高密度（100 ind/L）处理中微囊藻毒素含量与对照无显著差异。狐尾藻和金鱼藻均能抑制浮游植物密度、蓝藻门密度和叶绿素a浓度的上升,且狐尾藻抑制效果更优,而金鱼藻对微囊藻毒素含量无显著抑制作用。试验结束时,在相同溞密度和植物种类条件下,草-溞联合较单一大型溞和单一植物抑制效果更优,且以低密度大型溞+狐尾藻最优。草-溞联合相比单一溞处理,可有效改善其在处理中产生的微囊藻毒素含量后期反升现象。

关键词: 富营养化, 大型溞（Daphnia magna）, 狐尾藻（Myriophyllum aquaticum）, 金鱼藻（Ceratophyllum demersum）

Abstract: To study on the effects of phytoplankton in eutrophic water around farmland by aquatic plants and Daphnia magna, the combination of two organisms on the restoration of eutrophic water were investigated by taking Daphnia magna as the representative of filter-feeding animals, Myriophyllum aquaticum and Ceratophyllum demersum as the representatives of submerged plants. The results showed that D. magna significantly inhibited phytoplankton density, cyanobacteria density, chlorophyll-a concentration and the contents of microcystin, and the low density （25 ind/L） group had better inhibitory effects. In the late period of the test （15 d to 20 d）, the inhibitory effect was weakened. At the end of the test （20 d）, there was no significant difference in the contents of microcystins between the high density （100 ind/L） group and the control group. Similarly, both M. aquaticum and C. demersum could inhibit the increase of phytoplankton density, cyanobacteria density and chlorophyll-a concentration, and the inhibitory effect of M. aquaticum was better. However, C. demersum had non-significancant inhibition effect on the contents of microcystin. At the end of the experiment, the submerged plants and D. magna combination had stronger inhibitory effect than the single D. magna and single plant, and the combination of low-density D. magna and M. aquaticum was the best. Compared with the single D. magna treatment, the submerged plants and D. magna combination can effectively control the rise of the microcystin produced in the late stage.

Key words: eutrophic, Daphnia magna, Myriophyllum aquaticum, Ceratophyllum demersum

中图分类号:

张春雪, 魏孝承, 王晗阳, 郑向群, 杨波. 草-溞生物组合对农田周边富营养化水体中浮游植物的影响[J]. 湖北农业科学, 2021, 60(3): 42-49.

ZHANG Chun-xue, WEI Xiao-cheng, WANG Han-yang, ZHENG Xiang-qun, YANG Bo. Study on the effects of phytoplankton in eutrophic water around farmland by aquatic plants and Daphnia magna[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(3): 42-49.

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草-溞生物组合对农田周边富营养化水体中浮游植物的影响

Study on the effects of phytoplankton in eutrophic water around farmland by aquatic plants and Daphnia magna

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