하수오니 시용토양에서 작물의 중금속 흡수이행에 미치는 석회의 영향 = Originals : Effects of Liming on Uptake to Crops of Heavy Metals in Soils amended with Industrial Sewage Sludge

다국어 초록 (Multilingual Abstract)

The effect of lime on plant availability of heavy metals in soils amended with industrial sewage sludge (ISS) or pig manure compost (PMC) was investigated. A pot experiment with Altari radish (Raphanus sativus) was conducted. Industrial sewage sludge and pig manure compost were added at 25 and 50 Mg/ha, and lime was added at 3 Mg/ha. Heavy metal contents of ISS treated soils after experiment were higher than those in control (NPK plot) and PMC treatment. Specially, the contents of copper, zinc, nickel and chromium in the 50 Mg/ha of ISS treated soils were higher 12~48 times than those in control. Copper, zinc, and nickel contents in Altari radish leaves cultivated at the ISS treated soil exceeded the critical levels of plant toxicity. Copper, zinc, and nickel contents in Altari radish leaves and roots cultivated at the ISS treated soil were reduced by the addition of lime. Copper, zinc, and nickel contents in Altari radish leaves were negatively correlated with soil pH after experiment. It concluded that liming would reduce the uptake of heavy metals by plants and be a temporary method of reclamation at the highly heavy metal accumulated soils by ISS.