INFLUENCE OF HUMIC PREPARATIONS ON DEGRADED SOILS PROPERTIES OF TECHNOGENIC BARRENS

Q4 Agricultural and Biological Sciences
P. Tregubova, G. Koptsik, A. Stepanov, A. Stepanov, M. Korneecheva, Yu. V. Kupriianova
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引用次数: 1

Abstract

This research aim was testing the applicability of exogenic organic matter – extracted humic substances – for the remediation of technogenic barrens soils near Cu-Ni smelter (Kola Peninsula). In short-term laboratory experiments we studied the possibility of stabilization of heavy metals labile forms by commercial humic substances (HS) of different origin (peat humate “Flexom” and coal humate “Extra”) in comparison with HS, inoculated by microorganisms – nitrogen fixers and mycorrhizae-forming fungi and mineral fertilizers (NPK и CaCO3). Experiments were provided during 45 days after 14 days of pre-incubation under controlled conditions in climate chamber with light, temperature and humidity imitating the polar day conditions in Kola Subarctic. After experiments we evaluated changes in soil chemical properties, soil microbial community and test-culture (Deschampsia cespitosa). Peat humate application is ineffective without additional manipulations (e.g. combination with CaCO3), cooperation with biological applicants cannot be pointed out. Application of coal humate favours to metals stabilization, soil microorganism’s activation, test-culture growth. It may be effective to combine coal humate with biological applicants like mycorrhizae-forming fungi. So, coal-humates may be perspective growth-stimulator, ameliorant and detoxicant in remediation of degraded soils in conditions of polymetallic contamination.
腐殖质制剂对技术荒地退化土壤性质的影响
本研究的目的是测试外源有机质-萃取腐殖质-在科拉半岛铜镍冶炼厂附近的技术改造贫瘠土壤修复中的适用性。在短期的实验室实验中,我们研究了不同来源的商业腐殖质(HS)(泥炭腐殖质“Flexom”和煤腐殖质“Extra”)与HS(微生物-固氮剂和菌根形成真菌和矿物肥料(NPK和CaCO3)接种)稳定重金属活性形态的可能性。在模拟科拉亚北极地区极地日条件的光照、温度和湿度可控的气候室中,预孵育14天后,在45天内进行实验。通过试验,我们评价了土壤化学性质、土壤微生物群落和试培养(Deschampsia cespitosa)的变化。如果没有额外的操作(例如与CaCO3结合),泥炭腐殖质应用是无效的,无法指出与生物申请者的合作。煤腐植酸的施用有利于金属稳定、土壤微生物活化、试培生长。腐植酸煤与菌根形成真菌等生物应用菌组合施用可能有效。因此,腐植酸煤在多金属污染条件下的退化土壤修复中具有良好的促生长剂、改良剂和解毒剂的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
15
审稿时长
8 weeks
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