有机-中性化技术对镉铅污染土壤春菜生长的影响

采用盆栽试验研究了在镉、铅污染的土壤上，有机-中性化技术对春菜生长以及污染元素(Cd和Pb)吸收的影响。结果表明：石灰(L)．石灰加低量泥炭(LP1)、石灰加高量泥炭(LP2)处理能显著提高pH，显著缓解重金属镉和铅的毒害，明显改善了春菜的生长状况，一定程度上抑制了春菜对土壤中镉、铅的吸收。结果还表明：泥炭总体上并不影响石灰的中性化效果的发挥，在部分情况下还不同程度地加强了中性化效果，但泥炭的用量不是越多越好，有个适用量的问题。

Effects of Organic -neutralization Technology on the Growth of Brassica juncea var.foliosa in Cd- Pb Contaminated Soil

The effects of organic-neutralization technology on the growth and uptake of Cd and Pb of Brassica juncea var. foliosa in the Cd-Pb Contaminated soil were studied by pot experiments. The results showed that the technology of adding lime (L), lime plus low concentration peat (LP_1), lime plus high amount peat(LP_2) could significantly improve the pH of the soil, eliminate the poisonous symptoms of Cd and Pb to the Brassica juncea var. foliosa, apparently improve the growth of Brassica juncea var. foliosa and in some degree can inhibite the Brassica juncea var. foliosa uptake of Cd and Pb. The results also showed that peat had no influence on the neutralization effects of the lime; and in some circumstances peat could also increase the neutralization results in some degree. An appropriate amount of peat played an active part in bringing about these results.