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ISSN : 2287-8327

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Vol.28 No.4
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Adaption of Betula schmidtii Seeding in Coal-mine Field with Different Sewage Sludge Treatment Methods

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2005, v.28 no.4, pp.189-192




& (2005). Adaption of Betula schmidtii Seeding in Coal-mine Field with Different Sewage Sludge Treatment Methods. Journal of Ecology and Environment, 28(4), 189-192.
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Abstract

We tested the field adaptation of Betula schmidtii on the abandoned coal-mine soil with sludge amendment methods for romoting physiological activity of B. schmidtii seedlings under several environmental stress. Sewage sludges were amended to coal-mine soil with B. schmidtii seedlings which grown in the mixtureof artificial soil and composted sludge soil before transplanting (before-fertilized treatment, BF) and fertilized with composted sludge after transplanting (after-fertilized treatment, AF). The percent of establishment of seedlings for AF (80.7%) was lower than that for BF (92.7%). Nitrate reductase activity and photosynthetic pigment content were higher in AF than in BF, but malondialdehyde (MDA) content and superoxide dismutase (SOD) activity were lower in AF than in BF. These results represent that after-fertilized seedlings increase resistance against physiological stress at field condition using nitrogen source of composted sludge. On the contrary, before-fertilized seedlings were susceptible to environmental stress on abandoned coal-mine soil by exhausting of nitrogen source from composted sludge.

keywords
Coal-mine soil, Malondialdehyde, Nitrate reductase activity, Photosynthetic pigment, Sewage sludge, Superoxide dismutase

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