University of Zagreb Faculty of Agriculture, Agroecology Unit, Svetosimunska c. 25, 10000, Zagreb, Croatia.
University of Zagreb Faculty of Agriculture, Agricultural Engineering and Technology Unit, Svetosimunska c. 25, 10000, Zagreb, Croatia.
Sci Rep. 2020 Apr 21;10(1):6685. doi: 10.1038/s41598-020-63488-5.
The determination of the effects of cadmium and mercury on the growth, biomass productivity and phytoremediation potential of Miscanthus × giganteus (MxG) grown on contaminated soil was the main aim of this paper. The use of bioenergy plants as an innovative strategy in phytotechnology gives additional benefits, including mitigation and adaptation to climate change, and soil remediation without affecting soil fertility. An experiment was set up as a randomized complete block design with the treatments varied in concentrations of Cd (0, 10 and 100 mg kg soil) and Hg (0, 2 and 20 mg kg soil) added to the soil. Three vegetative years were studied. Yield values ranged from 6.3-15.5 t ha, cadmium concentration in plants varied from 45-6758 µg kg and Hg varied from 8.7-108.9 µg kg. Values between treatments and years were significantly different. MxG can accumulate and remove very modest amount (up to 293.8 µg Cd and 4.7 µg Hg) per pot per year in aboveground biomass. Based on this data it can be concluded that MxG, as a valuable energy crop, is a potential candidate for the phytostabilization and biomass production on soils contaminated with Cd and Hg moderately.
本研究旨在探讨镉和汞对生长在污染土壤上的杂交狼尾草（MxG）的生长、生物量生产力和植物修复潜力的影响。将生物能源植物作为植物修复技术中的一种创新策略，除了具有缓解和适应气候变化以及修复土壤而不影响土壤肥力等额外益处外，还具有一定的应用前景。本研究采用随机完全区组设计，在土壤中添加不同浓度的镉（0、10 和 100mgkg）和汞（0、2 和 20mgkg），共设置了三个处理组，三个生长年份。产量值范围为 6.3-15.5tha，植物中的镉浓度范围为 45-6758μgkg，汞浓度范围为 8.7-108.9μgkg。各处理组和年份之间的差异具有统计学意义。每年每盆地上部分生物量中，MxG 可积累并去除的镉和汞的量非常少（分别高达 293.8μg Cd 和 4.7μg Hg）。基于这些数据，可以得出结论，作为一种有价值的能源作物，杂交狼尾草是中度污染土壤上进行植物稳定化和生物量生产的潜在候选植物。
