乙酰甲胺磷和汞单一及复合污染对黄瓜发芽及幼苗生长的影响  

Individual and Combined Effects of Hg^(2+) and Acephate on Cucumber Seed Germination and Seedling Growth

作　　者：臧淑艳[1,2] 尹利利[1] 马原[1] 刘致玮[1] 连宾[3] 

机构地区：[1]沈阳化工大学应用化学学院,沈阳110142 [2]中国科学院地球化学研究所,环境地球化学国家重点实验室,贵阳550002 [3]南京师范大学生命科学学院,南京210046

出　　处：《地球与环境》2013年第4期435-440,共6页Earth and Environment

基　　金：沈阳市科技计划项目(F12-277-1-84);辽宁省高等学校杰出青年学者成长计划(LJQ2011041);辽宁省自然科学基金项目(201202176);环境地球化学国家重点实验室开放课题(SKLEG2013816)及科研专项(SKLEG2013407)

摘　　要：有机磷农药和重金属是目前我国土壤中较常见的污染物。本文以黄瓜种子为供试作物,研究了重金属汞与农药乙酰甲胺磷单一污染及复合污染对其发芽率以及幼苗生长的毒害效应。结果表明,Hg2+与乙酰甲胺磷单一污染及复合污染对黄瓜种子的发芽率、芽长和根伸长的生态毒性敏感程度依次为:根伸长>芽长>发芽率,Hg2+与乙酰甲胺磷单一污染及复合污染对黄瓜幼苗的毒害效应均较明显。复合污染对黄瓜种子发芽指标和幼苗生长的抑制效应表现为协同作用,其结果是复合污染的整体生态毒性效应增强。研究结果为进一步研究农药和重金属复合污染的生态毒性提供基础资料。This paper investigated the eco-toxicity effects of single pollution and combined pollution of Hg2＋ and acephate on seed germination rate and seedling growth of cucumber. The results indicated that the eco-toxicity sensibility follows the order of root elongation 〉shoot elongation 〉germinating rate, which was the result of single pollution and combined pollution of Hg2＋ and acephate. The eeo-toxicity effects were all obvious for both single pollution and combined pollution of Hg2＋ and acephate on cucumber seedlings. It was synergic effects of inhibition on seed germination rate and seedling growth when Hg2＋ and acephate were eombined. As a result, the whole eco-toxieity effects increased in combined pollution.

关 键 词：乙酰甲胺磷 汞 复合污染 种子发芽 根伸长 

分 类 号：X142[环境科学与工程—环境科学] S6[农业科学—园艺学]