矿区粉尘污染对玉米幼苗生理特性的影响  

Effect of Mine Dust Pollution on the Physiological Characteristics of Maize Seedling

作　　者：刘元[1] 牛明芬[1,2] 李微[3] 刘桂臣 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [3]沈阳建筑大学管理学院,辽宁沈阳110168 [4]辽宁邮电规划设计院有限公司,辽宁沈阳110168

出　　处：《安徽农业科学》2011年第16期9544-9545,共2页Journal of Anhui Agricultural Sciences

基　　金：沈阳建筑大学市政与环境省级重点实验室开放基金资助(SZ-200905);中国科学院东北振兴科技行动计划重点项目(DB2X-2-027)

摘　　要：[目的]研究过量Mg2+与镁粉尘污染对农作物生长发育情况的影响。[方法]通过在清洁土壤中投加不同浓度的MgCl2试剂和轻烧镁粉尘,经过27 d的培养,期间分4次测定植物生长发育情况指标。[结果]Mg2+对叶绿素有先激活再抑制的现象,而对根系活力则表现出先抑制再激活,但是Mg2+达到5.0 mg/g时,根系活力下降。[结论]MgO随着浓度和时间的双重作用影响植物生理活动。[Objective] The effect of the pollution of excessive Mg2＋ and magnesium dust on cropgrowth and development was researched.[Method] The development indicator of maize plant grown in soil,which was added with the different concentrations of MgCl2 reagent and lightly burned magnesium dust,was measured for 4 times after 27 days＇ culture.[Result] The effect of Mg2＋ on the chlorophyll development was firstly activation and then inhibition and on the root activity was firstly inhibition and then activation,however,the root activity was decreased while the content of Mg2＋ was up to 5.0 mg/g.[Conclusion] The dual role of both concentration and time of MgO affected the plant physiological activity.

关 键 词：Mg2+ 玉米幼苗 生态毒理指标 叶绿素 根系活力 

分 类 号：S513[农业科学—作物学]