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(China Agricultural University) (China Agricultural University) (China Agricultural University) (China Agricultural University) (China Agricultural University) (China Agricultural University)
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한국토양비료학회 한국토양비료학회 학술발표회 초록집 20th WORLD CONGRESS OF SOIL SCIENCE
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    초록·키워드

    Background and aims Biochar as a pyrolysis product of biomass has special characteristics of high carbon concentration, porous structure, high specific surface area and various functional groups. It can be used as a soil conditioner. A significant number of data have shown that biochar can improve soil fertility, increase crop yield, reduce nutrient leaching and stimulate microbial activity, and store organic C in soil. But few data are available about the impacts of biochar on salt leaching in saline soil. The aim of this study, therefore, was to investigate the effect of biochar on leaching of salt and ions from a saline soil collected from Inner Mongolia China. Methods A series rates of mushroom medium biochar (0%, 2%, 5%, 10%, w/w) were added into 0-20 cm surface soil in a sulfate saline soil column collected from Hetao Inner Mongolia. Continuously washing with deionized water, the eluent was collected and measured for electrical conductivity (EC) and main ions. At the end of the leaching, the contents of main ions were measured in the different layers. Results The eluent from biochar-amended soil columns appeared much earlier, by 5~36 days ahead, than the control column. The days for EC reduction to lower than 5ms/cm was shortened by 41~100 days due to biochar addition. Th ... 전체 초록 보기

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