摘要
[目的]研究蚯蚓活动对铜尾矿废弃地土壤养分的影响,以期为利用土壤动物进行铜尾矿生态恢复提供参考。[方法]在室内恒温(20℃)条件下培养1个月,共设置8种处理进行试验。[结果](1)接种蚯蚓对土壤养分的影响强弱顺序依次为:有效磷>有机质>速效钾>碱解氮,且随着蚯蚓密度的增加土壤养分的含量呈上升趋势;(2)添加秸秆后接种蚯蚓对铜尾矿废弃地土壤养分的影响强弱顺序依次为:有效磷>碱解氮>速效钾>有机质,且随着蚯蚓密度的增加土壤养分的含量呈上升趋势;(3)接种蚯蚓且添加秸秆比仅接种蚯蚓对土壤养分的影响大,且影响速度表现为:有效磷>速效钾>碱解氮>有机质。[结论]蚯蚓对铜尾矿废弃地土壤养分的恢复具有促进作用,蚯蚓密度越大影响作用越强。
[Objective] To study the influence of earthworm activities on soil nutrients in copper mine tailings in order to provide references for the ecological restoration by soil animals in copper tailings. [Methods] 8 treatments were designed and lasted for one month in laboratory（20 ℃）. [Results] （1） The inoculation of earthworm affected the soil nutrients as following order： phosphorus 〉 organic matter 〉 K 〉 available nitrogen. Soil nutrients content increased with the increase of earthworm density; （2） The inoculation of earthworm with the coverage of straw on copper tailings affected the soil nutrients as phosphorus 〉 available nitrogen〉K〉organic matter, and soil nutrients content increased with the increase of the earthworm density; （3） Earthworm inoculation with coverage of straw showed higher impact on soil nutrients than earthworm inoculation only, and the affecting speed were as phosphorus〉K〉available nitrogen〉 organic matter. [Conclusion] Earthworms do have effect on soil nutrient restoration in copper mine tailings, the greater the earthworm density, the higher the impact.
出处
《水土保持通报》
CSCD
2015年第6期178-181,共4页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目"铜尾矿废弃地自然演替过程中土壤动物迁居研究"(41001031)
关键词
蚯蚓
铜尾矿废弃地
土壤养分
earthworms
copper tailings
soil nutrients
