高碑店污泥农用肥效及重金属污染防治

通过盆栽试验，研究了高碑店污泥的肥效、重金属铜锌复合污染的机理及防治。结果表明：施用污泥能提高蔬菜的产量、用量控制在０．２ｋｇ／盆为宜，用量过高导致减产；铜锌浓度西红柿体内的分布遵循；根〉茎叶〉果实。根是重累积及伤害的主要部位，沸石及石灰处理污泥后可降低铜锌的活性含一及小麦重金属的吸收量，以石灰处理的效果较好。

Efficiency of Sludge Manure and Control of Heavy Metal Pollution in Gaobeidian Area

The efficiency of sludge manure in Gaobeidian and combined pollution by copper and zinc in the sludge were studied by means of pot experiment.The results showed:(1)adding this sludge could increase production of vegetables when the amount of sludge was below 0.2 kg/pot.Otherwise,it might result in decrease of production;(2)concentration of copper and zinc in plant of tomato followed the order:in root>in stem>in leaf.The root was the part in which the heavy metals concentrated,therefore,it was severely damaged;(3)available contents of Cu and Zn in sludge could decrease after the sludge was mixed with zeolite or lime for 48hrs,and the effect of mixed lime was better compared with the mixed zeolite.