铬污染对三种常见蔬菜种子萌发和生长的影响研究  

The Impact of Chromium Pollution on Seed Germination and Growth of Three Kinds of Common Vegetables

作　　者：任立研[1] 胡忠俊[1] 邓晓玫[1] 王观远[1] 

机构地区：[1]广西师范学院,广西南宁530001

出　　处：《大众科技》2011年第12期152-155,共4页Popular Science & Technology

基　　金：广西研究生教育创新计划项目(2009106030705M06)

摘　　要：通过研究不同浓度铬(Cr6+)对叶类蔬菜小白菜、上海青和甜芥菜种子萌发和幼苗生长的影响,得出结论:不同浓度的Cr6+对小白菜种子的萌发、根长和苗高都表现出一定影响,且随浓度的增大,抑制作用逐渐增大;当浓度小于1.0mg∕L时,Cr6+对小白菜发芽率、根长和苗高有促进作用,而当浓度小于2.0mg∕L时,Cr6+对甜芥菜的发芽率、根长和苗高有促进作用,而当浓度大于2.0mg∕L时则表现为抑制作用;Cr6+对上海青的总体影响不是很明显。总的来说,当Cr6+的浓度大于2.0mg∕L时,三个实验蔬菜品种的发芽势、发芽率、根长及苗高都受到抑制,Cr6+的抑制作用强弱表现为:小白菜>甜芥菜>上海青。Through the research of influence of different chromium（Cr6＋） concentration on seed germination and young seedling growth of leafy vegetables such as the Chinese Cabbage, Shanghai Green and sugared leaf mustard. The result showed that： Different concentration of Cr6＋ displays certain influence on Chinese Cabbage seeds＇ germination, root length and seedling height, along with concentration enlargement, the inhibitory action increases; When concentration is lower than 1.0 mg/L, Cr6＋ has the promotion action on Chinese Cabbage＇s germination percentage, root length and seedling height. When concentration is lower than 2.0 mg/L, Cr6＋ has the promotion action on sugared leaf mustard＇s germination percentage, root length and seedling height. And while concentration is higher than 2.0 mg/L, Cr6＋ displays inhibitory action, and influence on Shanghai Green is not obvious. Generally speaking, when Cr6＋ concentration is higher than 2.0 mg/L, all three vegetables shows inhibitory action. The Cr6 inhibitory sequence is Chinese Cabbage 〉 Shanghai Blue 〉 sugared leaf mustard .

关 键 词：铬 蔬菜种子 发芽 抑制作用 相关性 

分 类 号：O614.611[理学—无机化学]