欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 1997, Vol. 8 ›› Issue (1): 55-58.

• 研究论文 • 上一篇    下一篇

长期喷施稀土对土壤-植物(小麦)系统中稀土元素分布、累积及运移的影响

刘书娟1, 王立军1, 章申1, 高效江1, 王玉琦2, 孙景信2, 陈红民2, 曲洪君3   

  1. 1. 中国科学院地理研究所, 北京 100101;
    2. 中国科学院高能物理研究所, 北京 100080;
    3. 黑龙江省花园农场实验站, 花园 164151
  • 收稿日期:1995-12-14 修回日期:1996-05-06 出版日期:1997-01-25 发布日期:1997-01-25
  • 基金资助:

    国家自然科学基金重大资助项目

Effect of long term foliage dressing rare earth elements (REEs) on their distribution, accumulation and translocation in soil spring wheat system

Liu Shujuan1, Wang Lijun1, Zhang Shen1   

  1. Institute of Geography, Academia Sinica, Beijing 100101
  • Received:1995-12-14 Revised:1996-05-06 Online:1997-01-25 Published:1997-01-25

摘要: 在我国施用稀土时间最长的黑龙江省花园农场,研究比较了施用稀土12 a和不施稀土的对照处理上小麦和土壤中的稀土元素的分布、累积及运移.结果表明,长期叶面喷施稀土并未造成耕层土壤和下部土层的稀土元素的累积.成熟期小麦植株各部位的稀土元素含量顺序为根>叶>茎、壳;稀土元素主要累积在根部,其次是叶,茎和壳累积较少.喷施处理小麦根部的稀土元素累积量高于对照,叶部也有此趋势,而茎、壳等部位差异不大.根、茎、叶、壳稀土元素分布模式与土壤中相似,与施用的常乐稀土差别较大;长期喷施稀土未曾造成籽粒中稀土元素的明显累积.

关键词: 稀土元素, 小麦, 分布, 累积和运移, 稳定同位素, 食物网基础, 营养结构, 海州湾

Abstract: In this paper, the distribution,accumulation and translocation of rare earth elements(REEs) in soil and spring wheat are studied after foliage dressing with REEs for 12 years. The long term foliage dressing with REEs did not result in the accumulation of REEs in upper and lower soil layers. At maturing stage of spring wheat,the REEs content is in the order of root>leaf>stem and crust. Comparing with control, foliage dressing leads a higher accumulation of REEs in root, but no significant difference is found in stem and crust between these two treatments. The distribution patterns of REEs in root,stem,leaf and crust are similar to that in soil. Long term foliage dressing with REEs did not have an obvious effect on the REEs content of spring wheat grain.

Key words: Rare earth elements, Spring wheat, Distribution, Accumulation and translocation, trophic structure, food web foundation, Haizhou Bay, stable isotope