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摘要：绿色微囊藻是巢湖蓝藻水华中居优势种时间最长的一种有害蓝藻。研究表明，它产毒能力比铜绿微囊藻高。然而,对这种藻的研究较少。随着内陆水体富营养化的加剧而引起有害藻类水华的频繁发生已成为国内外普遍关注的环境问题,其中微囊藻水华是淡水水体中危害最严重的一类,由于这类水华发生普遍,持续时间长,而且多数产毒,其在环境中的大量残留带来了潜在的环境风险，因而倍受人们的关注。本文通过选择绿色微囊藻作为生物模型,来测定藻细胞氧化损伤程度与藻细胞内外藻毒素MC-LR的含量及精喹禾灵对绿色微囊藻的生长抑制、精喹禾灵对蛋白质含量的影响，最终研究除草剂精喹禾灵对蓝藻的生态毒性。结果表明：0.5 mg/L的精喹禾灵能够刺激绿色微囊藻细胞的生长，而绿色微囊藻在长时间暴露于高浓度精喹禾灵时其生长明显受到抑制。为今后的研究方向进行了探讨，旨在为其生态风险评价提供有价值的参考。33670
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毕业论文关键词： 精喹禾灵；绿色微囊藻；生态毒性；抑制
Acute Toxicity of Quizalofop-p-ethyl on Aquatic Plant
Abstract: Microcystis viridis is the longest harmful cyanobacteria in Chaohu cyanobacteria of dominant species in central. It produce more toxicity than Microcystis aeruginosa. However，studies of Microcystis viridis is less. With the intensification of inland water eutrophication caused by harmful algal blooms has become a frequent occurrence of environmental issues of common concern at home and abroad, including microcystis blooms is the most serious category in freshwater bodies, since these water bloom widespread and most toxigenic greater dangers, which poses a potential environmental risk of a large number of residues in the environment. Green algae as a biological model, the degree of oxidative damage by measuring algal cells inside and outside the algal cells microcystin LR content Quizalofop green Microcystis growth inhibition effect Quizalofop protein content, the study herbicide quizalofop ecotoxicity of cyanobacteria. The results show: 0.5 mg / L of Quizalofop can stimulate the growth of green Microcystis cells, while green microcystin at prolonged exposure to high concentrations Quizalofop its growth was inhibited. Probed into the future research directions, aimed to provide valuable reference for the ecological risk assessment of the antibiotics.
KeyWords: Quizalofop-p-ethyl；Microcystis viridis；Ecological toxicity；Inhibit
目 录
1. 引言（绪论） 1
1.1 除草剂的污染现状 1
1.2除草剂对淡水藻类的毒性效应 1
1.2.1除草剂结构及其作用机制对毒性的影响 1
1.2.2除草剂作用浓度对毒性的影响 1
1.2.3藻种及其基本细胞组分对除草剂的影响 2
1.2.4环境因子对除草剂毒性的影响 2
1.2.5作用时间 3
1.3除草剂对淡水藻类的毒性机理 3
1.3.1除草剂对藻类的固氮作用影响 3
1.3.2除草剂对藻类的光合作用影响 3
1.3.3除草剂对生物膜作用机理 3
1.3.4除草剂对藻类生化组分的影响 3
1.4 精喹禾灵的污染现状 3
1.5 精喹禾灵的理化性质和药理毒理 4
1.5.1 精喹禾灵的理化性质 5
1.5.2 精喹禾灵的药理毒理 5
1.6 精喹禾灵的生态毒性 5
1.6.1 精喹禾灵对微生物的生态毒性 5
1.6.2 精喹禾灵对植物的生态毒性 5
1.6.3 精喹禾灵对动物的生态毒性 5
1.6.4 精喹禾灵对人体的生态毒性 5