您的位置:首页  > 论文页面

土壤pH值对大豆/土壤体系中铝毒作用的影响

发表时间:2009-12-31  浏览量:2035  下载量:859
全部作者: 伍松林,王驰中,王伦,谢忠雷,李航
作者单位: 吉林大学环境与资源学院
摘 要: 通过盆栽实验,研究了不同pH值,不同浓度外源铝对东北黑土中活性铝含量及大豆生长发育和植株体内铝的累积规律的影响。结果表明:土壤pH值是影响土壤活性铝含量的主要因素,随着土壤pH值降低,土壤活性铝含量增加;土壤pH值从4到6变化时,植株长势逐渐增强,而后又有小幅度下滑趋势,表明在这一区间存在一点(或一区间),当pH值高于这一点(区间)时,土壤中活性铝含量适宜,大豆生长受铝毒作用不明显,而当pH值低于这一点(区间)时,土壤中活性铝含量较高,大豆生长受铝毒作用较明显;随着土壤活性铝含量的增加,植株体内累积铝量也逐渐增加。
关 键 词: 土壤化学;植物铝毒作用;活性铝;土壤pH值
Title: Effect of soil pH on aluminum toxicity in the soybean/soil system
Author: WU Songlin, WANG Chizhong, WANG Lun, XIE Zhonglei, LI Hang
Organization: College of Environment and Resources, Jilin University
Abstract: In this paper, the condition of growing development of soybean (JN NO.12) grown in northeast China soil was researched by pot experiment. The pot test was disposed by different pH and different concentration of extraneous Al. The content of soil active Al and soybean Al were then determined by sampling soil and plant. The result showed that soil pH was the main factor affecting the content of soil active Al. The content of soil active Al increased with soil pH decreasing. The growing development of soybean presented a certain discipline, namely there might exist a soil pH point (or a space) between 4 and 6. When soil pH was higher than this point (or the space), the content of active Al in soil was suitable and the effect of aluminum toxicity on soybean growth was not significant. When soil pH was lower than this point (or the space), the content of active Al in soil increased obviously,and soybean growth was affected by aluminum toxicity distinctly. Moreover, the accumulation of Al in the soybean plant increased with the content of active Al in soil increasing.
Key words: soil chemistry; aluminum toxicity on plant; active aluminum; soil pH value
发表期数: 2009年12月第24期
引用格式: 伍松林,王驰中,王伦,等. 土壤pH值对大豆/土壤体系中铝毒作用的影响[J]. 中国科技论文在线精品论文,2009,2(24):2637-2642.
 
0 评论数 0
暂无评论
友情链接