Plant, Soil and Environment | |
The biochar effect on soil respiration and nitrification | |
Barbora Šlapáková1  | |
关键词: microbial activity; mineralization; soil amendment; cambisol; | |
DOI : 10.17221/13/2018-PSE | |
学科分类:农业科学(综合) | |
来源: Czech Academy of Agricultural Sciences | |
【 摘 要 】
Soil microorganisms play a main role in the nutrient cycle and they also play an important role in soil health. This article studies the influence of three rates of biochar (0.5, 1 and 3%) in comparison with control (0 biochar) in two different soils (Valečov and Čistá) on soil microbiota activities. The biochar was prepared from 80% of digestate from Zea mays L. and 20% of cellulose fibres by pyrolysis (470°C, 17 min). The biochar ability to influence microbial processes in soil was determined by respiration and nitrification tests. There were no significant differences between basal respiration of control samples and biochar-amended samples. Basal respiration in the Valečov soil reached average amounts from 1.32 to 1.52 mg CO 2 /h/100 g. In the Čistá soil, basal respiration reached average amounts from 1.40 to 1.49 mg CO 2 /h/100 g. No significant differences were proved also in nitrification tests of both soils. Nitrifying potential was the highest in 3% rate of biochar amendment. There were no negative changes in the measured soil parameters. CO 2 efflux was not higher in biochar-amended soil.
【 授权许可】
CC BY
【 预 览 】
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RO201911047161341ZK.pdf | 1221KB | download |