Tạp chí
Lê Đức, Nguyễn Xuân Huân, Nguyễn Thị Đức Hạnh, Trần Thị Tuyết Thu (trang 95-100)
Từ khoá: ảnh hưởng, kim loại nặng, Cu, Pb, giun đất, Pheretima morrisi, rau cải, Brassica juncea
Summary
Effect of heavy metals (cooper, lead) on earth worms (Pheretima morrisi) and cabbage (Brassica juncea)
Experiments on alluvial soils of Red river delta with 3 replications according to TCVN 5962-1995. Cu, Pb concentrations were applied: 0, 50, 100, 200, 500, 1000 ppm. + For earthworms: after 7, 14, 21 days, effect of Cu on earthworms were evident. The more, the Cu concentration, the more the effect. At concentration of 500ppm, after 5 days, almost earthworms were dead and at 1000ppm they dead totally. Effect of Pb were not evident at all conducted concentration. Accumulation of Cu2+, Pb2+ after 35 days in earthworm was increased with Cu, Pb concentration used. Cu was accumulated more than Pb one. + For cabbage: Cu affected considerably on plant height, root loony and leaves amount. After 7 days, at concentration 200ppm root became black, and after 14 days at concentration 500ppm appeared necrotic of the stems. At Pb concentration 0-1000ppm, growth of cabbage was not affected. At Pb concentration 1300ppm after 7 days, Pb affected on cabbage.
