The aim of the research was to assess the impact of root exudates of two widely distributed plant species, monocot (couch grass) and dicot (dandelion) on the concentrations of 27 macro- and trace elements in the rhizosphere soil of the plants. A field trial was carried out to study short-term variations in the concentrations of the elements when the plants grew separately or in close proximity to each other in non-contaminated soil and in soil contaminated by RbCl. During daytime, total amount of C and N in the rhizosphere soil of both plant species was found to be constantly decreasing. Similar variations were also found for Mg, Al, V, Ga, and As. The concentrations of some other elements (Na, Se, La, and Ce) showed a maximum value in the middle of day. These variations might be due to changes in the soil temperature. Contamination of soil by RbCl negatively affected the concentrations of several elements in the rhizosphere soil of couch grass and dandelion. The impact was more marked when the plants grew far from each other. Soil contamination by RbCl led to a decrease in number of natural isolates in bulk soil. In the soils taken from roots, of the plants grown in the Rb-contaminated soil, number of the same isolates increased compared with that in bulk soil, but level of the increase was different in the rhizosphere soil of couch grass and dandelion. The variations depended on whether these plants grew close to each other or separately.

该研究的目的是评估两种分布广泛的植物物种（单子叶植物（长沙发草）和双子叶植物（蒲公英））的根系分泌物对植物根际土壤中27种大型和微量元素浓度的影响。进行了一项田间试验，以研究当植物在未污染的土壤和被RbCl污染的土壤中分别生长或彼此靠近时，其元素浓度的短期变化。在白天，发现两种植物的根际土壤中的C和N总量一直在减少。Mg，Al，V，Ga和As也发现了类似的变化。其他一些元素（Na，Se，La和Ce）的浓度在一天中间显示出最大值。这些变化可能是由于土壤温度的变化。RbCl对土壤的污染会对长草和蒲公英根际土壤中几种元素的浓度产生负面影响。当植物彼此远离时，影响更加明显。RbCl对土壤的污染导致散装土壤中天然分​​离物的数量减少。在根系土壤中，在受Rb污染的土壤中生长的植物中，相同菌株的数量与散装土壤中的相比有所增加，但在长草和蒲公英的根际土壤中，其增加水平有所不同。差异取决于这些植物是彼此靠近生长还是分开生长。RbCl对土壤的污染导致散装土壤中天然分​​离物的数量减少。在根系土壤中，在受Rb污染的土壤中生长的植物中，相同菌株的数量与散装土壤中的相比有所增加，但在长草和蒲公英的根际土壤中，其增加水平有所不同。差异取决于这些植物是彼此靠近生长还是分开生长。RbCl对土壤的污染导致散装土壤中天然分​​离物的数量减少。在根系土壤中，在受Rb污染的土壤中生长的植物中，相同菌株的数量与散装土壤中的相比有所增加，但在长草和蒲公英的根际土壤中，其增加水平有所不同。差异取决于这些植物是彼此靠近生长还是分开生长。