地理科学 ›› 1985, Vol. 5 ›› Issue (3): 209-217.doi: 10.13249/j.cnki.sgs.1985.03.209

• 学位论文摘登 • 上一篇    下一篇

土壤-植物系统硒传输研究 Ⅰ.我国一些天然土壤中的硒

郑达贤, 李日邦, 谭见安   

  1. 中国科学院地理研究所
  • 出版日期:1985-05-20 发布日期:1985-05-20

A STUDY ON TRANSMISSION OF SELENIUM IN SOIL-PLANT SYSTEM—1.SELENIUM IN SOME NATURAL SOIL IN CHINA

Zheng Daxian, Li Ribang, Tan Jianan   

  1. Institute of Geography, Academia Sinica
  • Online:1985-05-20 Published:1985-05-20

摘要: 土壤—植物系统硒的生态传输链是环境—人硒关系的中间环节,因而,这一传输链的研究是改良低硒环境、预防硒反应症的基础。自本世纪30年代确定硒中毒是美国中西部广大地区家畜碱性病和盲目蹒跚病的主要病因以来,尤其是50至60年代确定硒缺乏是家畜白肌病等一系列动物硒反应症的基本病因以来。世界各国对土壤硒和作物硒都进行了大量的研究。我国克山病和大骨节病与缺硒关系的发现及70年代以来世界环境问题的提出,更加强了人们对环境中硒的关注。

Abstract: In order to study the transmission of Se in soil-plant system,the author collected 62 samples from 11 typically natural soil profiles in different natural zones in China,measured Se content in them and other properties,respectively,analysed the distribution of Se in soil profiles and calculated its enrichment coefficient (EF),and then discussed the correlation of Se content to soil proprties and the origination of Se. Based on EF>1 and the close correlation of Se with I content,it is noted that Se accumulation originated from an external source is absolutely not negligible quantity in the enrichment.Through studing the samples,it is found that there are obviously correlations of Se with organic matter content in soil of disease region and Se with R2O3 content in soil of no-disease region.These factors show that the combined forms of Se in soil of the two kinds of region above are so different that they effect certainly on the"efficiency"of Se and its transmission in soil-plant system.