FAN Jin-feng,ZENG Shu-ping,LIANG Chan-juan,et al.Effects of La(Ⅲ) and Acid Rain on Growth of Soybean Seedling[J].Soybean Science,2009,28(04):744-746,750.[doi:10.11861/j.issn.1000-9841.2009.04.0744]
La(Ⅲ)与酸雨对大豆幼苗生长的复合影响
- Title:
- Effects of La(Ⅲ) and Acid Rain on Growth of Soybean Seedling
- 文章编号:
- 1000-9841(2009)04-0744-03
- Keywords:
- Lanthanum (Ⅲ); Acid rain; Combined treatment; Soybean seedling; Growth
- 分类号:
- X517;Q945
- 文献标志码:
- A
- 摘要:
- 为探索稀土元素镧和酸雨对大豆幼苗生长的复合影响，采用模拟酸雨和镧处理大豆(Glycine max)，研究了La(Ⅲ)与酸雨(AR)复合处理对大豆幼苗地上、地下器官生长的影响。结果表明：稀土镧(RE1/20 mgL-1 、RE2 /60 mgL-1 、RE3/100 mgL-1和RE4/500 mgL-1 )单独作用时，RE1对大豆幼苗生长有促进作用，RE2、RE3和RE4表现为抑制作用，且RE4＞RE3＞RE2。在酸雨(AR1/pH2.5、AR2/pH3.5和AR3/pH4.5)单独作用和RE +AR复合作用影响下，大豆幼苗生长均受到抑制；而且AR的pH越低，RE的浓度越高，抑制作用越明显。RE1和AR复合对大豆幼苗的抑制程度低于AR单独作用，其它浓度RE和AR复合抑制程度高于各自单独作用。
- Abstract:
- In order to explore combined effects of growth of soybean seedling to acid rain and rare earth，soybean seedling were subjected to Lanthanum (Ⅲ) and simulated acid rain.Response of growth of soybean seedling’s underground and above-ground organs to combined treatments of Lanthanum (Ⅲ) and acid rain were studied.The results indicated that RE1(20 mgL-1)promoted soybean seedling growth，but that RE2(60 mgL-1)，RE3(100 mgL-1)and RE4(500 mgL-1) inhibited growth of soybean seedlings.The sequence of inhibition degree was RE4＞RE3＞RE2.Under acid rain (AR1/pH2.5，AR2/pH3.5 and AR3/pH4.5) stress alone，all growth indices were lower than those of the control.With RE and AR combined treatments，growth of soybean seedling were all inhibited.The degree of inhibition of growth was larger when the pH value of AR was lower and the concentration of RE solution was higher.Moreover，the degree of decrease of growth index in RE1 and AR combined treatment was lower than that in AR or RE1 treatment alone,while RE2，RE3and RE4are opposite.
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备注/Memo
基金项目：江苏省大学生实践创新训练资助项目，院长基金资助项目(HT2008-6-1)。 作者简介：范金凤(1987-),女,学士。研究方向为环境生态学。 通讯作者：周青，教授。E-mail:zhouqeco@yahoo.com.cn.。