Industrial hemp (Cannabis sativa L.) has emerged as a potential multipiurpose crop: fibre crop, energy crop, and phytoextractor of pollutants from the soil. However, the multipurpise grwoth of hemp was restricted as its cultivation in EU was legalized only in the past two decades. Most scientific researches of sewage sludge (SS) describe it at relatively low application levels for cultivation of different crops. Such lack of information requires a wide range of practices for fertilizing hemp with high level of sewage sludge or sewage sludge char (SSCh) doses. At this moment there are no guidelines for sewage sludge char fertilization of energetic plants, depending on soil type. The aim of the study was to analyze and compare SS and SSCh soil application effect on industrial hemp (Cannabis sativa L.) growth performance, and heavy metals accumulation to determine optimum SS or SSCh application rates for the growth of hemp. The experimental design consisted of four treatments: 1–25; 2–50; 3–100; 4–200 of sewage sludge and sewage sludge char Mg ha⁻¹, and control soil (clay loam). It was determined that hemp ability to accumulate heavy metals depending on fertilisation intensity of sewage sludge and sewage sludge char decreased in all parts. Heavy metal distribution of hemp was selective; therefore their contents were decreasing in the following order: roots > stems > leaves. The study has confirmed the nutritional value of SS and SSCh. The potential of using the sewage sludge and its char as a source of organic matter for improvement of clay loam soil and a reasonable production of bioenergy crop like hemp without the use of inorganic fertilizers was shown.

工业大麻（Cannabis sativa L.）已成为一种潜在的多用途作物：纤维作物，能源作物和土壤中污染物的植物提取物。然而，由于在欧盟的大麻种植仅在过去的二十年才合法化，因此大麻的多种用途受到限制。污水污泥（SS）的大多数科学研究都将其描述为在相对较低的不同作物种植应用水平上。此类信息的缺乏需要使用大量污水污泥或污水污泥炭（SSCh）剂量施肥大麻的广泛实践。目前，还没有根据土壤类型对高能植物进行污水污泥炭施肥的指南。该研究的目的是分析和比较SS和SSCh土壤施用对工业大麻的影响（大麻的生长性能和重金属的积累，从而确定大麻生长的最佳SS或SSCh施用量。实验设计包括四个处理：1–25；2-50；3-100；4–200污水污泥和污水污泥炭Mg ha ^-1，并控制土壤（粘土壤土）。可以确定的是，取决于污泥的施肥强度和污泥炭的含量，大麻的积累重金属的能力在所有部分均下降。大麻的重金属分布是选择性的；因此，它们的含量按以下顺序递减：根>茎>叶。该研究证实了SS和SSCh的营养价值。显示了使用污水污泥及其炭作为有机物来改善壤土和合理生产生物能源作物（如大麻）而无需使用无机肥料的潜力。