| .绿肥植物绿豆去除土壤中芘的实验研究[J].农业环境科学学报,2013,32(6):. |
| 绿肥植物绿豆去除土壤中芘的实验研究 |
| Removal of Pyrene in Soil by Leguminous Green manure Plant Mung Beam |
| |
| DOI：10.11654/jaes.2013.06.013 |
| 中文关键词: 绿豆 根瘤菌 芘 生物质 |
| 英文关键词: mung beam rhizobium pyrene raw mung bean return |
| 基金项目: |
|
|
| 摘要点击次数: 1726 |
| 全文下载次数: 1614 |
| 中文摘要: |
| 探讨了绿豆植株、绿豆-根瘤菌体系以及绿豆生物质还田对土壤中芘去除效果的影响。60 d的盆栽实验结果表明，添加与未添加根瘤菌剂的绿豆植株对芘的去除率分别为76.8%~89.2%和85.6%~90.4%，无植株灭菌与未灭菌的土壤中去除率分别为11.5%~24.6%和35.1%~63.9%。土壤中芘降解菌的数量与芘浓度正相关，而是否种植绿豆对其无显著影响，绿豆可能是通过为共代谢微生物提供底物以促进芘的去除。而25 d的生物质还田模拟实验中，芘的去除率相对于空白可达13.84%。研究发现添加根瘤菌后种植绿豆并将绿豆收获后的生物质还田可作为加强污染土壤芘去除的有效措施。 |
| 英文摘要: |
| This work investigated the removal capacity of pyrene in soil by mung bean, mung bean-rhizobium association and raw mung bean return. The pot experiments were conducted in 60 days, and the results showed that the removal capacities of pyrene（the range of concentration is 10~100 mg·kg-1） by mung bean with or without rhizobium were 76.8%~89.2% and 85.6%~90.4%，while those in unsterile and sterile soil without mung bean were 35.1%~63.9% and 11.5%~24.6%, respectively. The number of pyrene-degrading microbes positively associated with the concentration of pyrene, but it showed no correlation with mung bean. These results indicated that the removal of pyrene seems to be promoted by mung bean by providing the substrate for symbiotic organisms. Furthermore, during the simulation experiment of raw mung bean return, the removal rate of pyrene increased by 13.84% compared to control in 25 days. This paper finds that mung bean-rhizobium association can effectively remove pyrene in soil, and the application of raw mung bean return can also improve the removal efficiency of pyrene. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
