نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم و مهندسی خاک، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران
2 گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Soil contamination with heavy metals is of great importance due to its destructive and harmful effects on agricultural production and the nutrition of living organisms. Therefore, the use of management strategies to reduce their adverse effects is essential. This study was conducted to investigate the effect of carbon black and lead contamination on some biological properties of soil and the growth of faba bean plants. The pot experiment was carried out in a completely randomized design as factorial with four replications, including two factors: lead contamination at three levels (no contamination, 50, and 100 mg/kg) and carbon soot at four levels (0, 1, 2, and 4% by weight). The study was conducted in the greenhouse of Khuzestan Agricultural Sciences and Natural Resources University. Results showed that lead contamination in soil led to a decrease in plant height and dry weight. As the level of soil contamination increased, the concentration and uptake of lead in the roots and aerial parts of the plant also increased. The application of carbon black reduced the concentration of lead in the roots, and aerial parts; the highest reduction was observed at the 4% carbon black level compared to the control. The addition of carbon black increased plant height, root dry weight, and aerial part dry weight by 22.86%, 18.01%, and 23.07%, respectively, compared to the control. The highest values of microbial biomass carbon, soil microbial respiration, and catalase enzyme activity were recorded in the treatment with 4% carbon black and without soil lead contamination, measuring 13.35 mgCmic/100g, 64.89 mgCO2/100g.day, and 1.82 mLKMnO4/g.h, respectively. The results of this study showed that the addition of carbon black was able to reduce the harmful effects of lead and improve soil biological indices and plant growth. However, further research is necessary to assess the long-term effects.
کلیدواژهها [English]
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