CAJ | 학술논문

为进一步明确盐碱土对重金属的吸附累积规律，本研究以盐碱化土壤为研究对象，探讨不同盐碱化程度土壤对重金属铅的吸附行为，以及施用水稻秸秆、堆肥后盐碱化土壤对铅的吸附特征变化。结果表明：施用水稻秸秆、堆肥前后的盐碱化土壤样品，对铅的等温吸附曲线更符合Freundlich方程，且决定系数均大于0.9；盐碱化土壤对铅有较强的吸附能力，其强弱顺序为：轻度盐碱化土壤>重度盐碱化土壤>中度盐碱化土壤；在盐碱化土壤中施用一定量水稻秸秆能促进其对铅的吸附，而施用一定量污泥堆肥能抑制盐碱化土壤对铅的吸附。
위진일보명학염감토대중금속적흡부루적규률，본연구이염감화토양위연구대상，탐토불동염감화정도토양대중금속연적흡부행위，이급시용수도갈간、퇴비후염감화토양대연적흡부특정변화。결과표명：시용수도갈간、퇴비전후적염감화토양양품，대연적등온흡부곡선경부합Freundlich방정，차결정계수균대우0.9；염감화토양대연유교강적흡부능력，기강약순서위：경도염감화토양>중도염감화토양>중도염감화토양；재염감화토양중시용일정량수도갈간능촉진기대연적흡부，이시용일정량오니퇴비능억제염감화토양대연적흡부。
The adsorption of lead in the different saline-sodic soils ( SSS ) and its changes caused by adding rice straw or compost were studied. The results showed that the adsorption isotherms of lead in saline-sodic soil before and after the addition of rice straw or compost fitted well with the Freundlich equation with correlation coefficients above 0. 9. The strongest adorsorption of lead was found in mild saline-sodic soil and the weakest, in moderate saline-sodic soil. Rice straw addition in the SSS samples increased the adsorption of lead, whereas compost addition brought the contrary results.