Roadside soils along Leningradskoe Highway are ecotoxicologically assessed by the laboratory phytotest method based on two test cultures. The research was carried out along a 300-m-long transect established perpendicular to the highway. The toxicity of soils, determined according to inhibition of the growth parameters of Lepidium sativum L. (cress) and Hordeum vulgare L. (rye), has been revealed in the majority of the studied area and is characterized by a bimodal distribution: it is maximum at a distance of several meters from the highway (dangerously and moderately toxic soils), sharply decreases at a distance of 7 m from it, and gradually increases again towards the end of the studied zone (moderately toxic soils). The degree of phytotoxicity is differentiated depending on the test culture variant: H. vulgare was characterized by a lower sensitivity to pollutants and did not reveal toxicity in the 7–25 m zone from Leningradskoe Highway, while L. sativum revealed toxicity of soils throughout the investigated area. Among the analyzed test parameters, root and seedling length were the most sensitive to pollutants, while seed germination was uninformative.

中文翻译：

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利用实验室植物试验对列宁格勒高速公路沿线地区的路旁土壤进行生态毒理评估

列宁格勒高速公路沿线的路旁土壤通过实验室植物测试方法，基于两种测试培养物进行了生态毒理学评估。该研究是沿着垂直于高速公路的300米长的断面进行的。土壤的毒性，根据对Lepidium sativum L.（水芹）和大麦的生长参数的抑制来确定L.（黑麦）已在大多数研究区域中发现，并具有双峰分布特征：在距高速公路几米（危险和中毒土壤）的距离处最大，在距离高速公路的距离处急剧下降。距其7 m，并逐渐向研究区域（中毒土壤）末端逐渐增加。植物毒性的程度根据测试培养物的不同而有所不同：普通小麦的特征是对污染物的敏感性较低，并且在列宁格斯科高速公路（Leningradskoe Highway）的7–25 m区域没有发现毒性，而番茄（L. sativum）揭示了整个研究区域土壤的毒性。在分析的测试参数中，根和幼苗的长度对污染物最敏感，而种子的发芽却没有信息。