设为首页 | 添加收藏 | English | 2018年12月10日 星期一 
您现在的位置: 首页 > 科技处 > 近期发表文章 > 正文
Potential of Taraxacum mongolicum Hand-Mazz for accelerating phytoextraction of cadmium in combination with eco-friendly amendments
沈阳应用生态研究所    更新时间:2010-07-12 08:29:33
 
影响因子:2.975
 
Abstract:

Phytoextraction and phytostabilization are well-established sub-processes of phytoremediation that are being followed for in situ remediation of soils contaminated with toxic metals. Taraxacum mongolicum Hand-Mazz, a newly reported Cd accumulator has shown considerable potential for phytoextracting Cd. This paper investigated the effects of urea and chicken manure on T. mongolicum phytoextracting Cd from soil using pot culture experiments. The results showed that urea application did not affect the Cd concentrations in root, leaf, inflorescence and shoot of T. mongolicum, but chicken manure significantly decreased them (p < 0.05) by 23.5%, 31.5%, 24.8% and 30.4% owing to decreased extractable Cd. Urea and chicken manure significantly increased (p < 0.05) the phytoextraction capacities (μg pot−1) of T. mongolicum to Cd by 3–5-fold due to the increase in shoot biomass (increased 4–7 folds). Further, addition of urea and chicken manure increased organic matter, nitrogen, phosphorus and potassium, the microorganism count, urease and phosphatase activities of soil indicating their eco-friendly function. Urea is ideal for optimizing phytoextraction of T. mongolicum to Cd, while chicken manure is appropriate for phytostabilization.

Keywords: Urea; Chicken manure; Phytoremediation; Taraxacum mongolicum Hand-Mazz; Cd (Cadmium)


责任编辑: 
Back Top   】 【打印此文】 【关闭窗口