[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(08):37-41.[doi:10.11942/j.issn1002-2767.2020.08.0037]
有机肥对污染土壤上蚯蚓生长及Cd和Pb吸收的影响
- 文献标志码:
- A
- 摘要:
- 为促进重金属污染土壤的修复，以赤子爱胜蚓为试验动物，以秸秆、牛粪、羊粪作为供试有机肥，采用室内接种法，研究有机肥对复合污染土壤上蚯蚓生长和Cd和Pb吸收的影响。结果表明：在不同处理条件下，污染土壤中蚯蚓数量顺序大小依次为秸秆>羊粪>牛粪>CK（不添加有机肥），其中施用秸秆有机肥时有较少的产卵量；蚯蚓个体均重大小顺序为秸秆>牛粪>羊粪>CK；与对照相比，添加牛粪、羊粪和秸秆后，蚯蚓体内Cd含量分别降低了84.60%、94.02%和8.67%，蚯蚓体内Pb含量分别降低了16.53%、15.04%和4.17%。试验后土壤有效态Cd和Pb含量大小顺序均为CK>羊粪>牛粪>秸秆，其中秸秆处理组土壤有效态Cd和Pb浓度与对照相比分别降低了145和430.35 mg?kg-1。因此，秸秆发酵有机肥较适合于蚯蚓的生长，利于蚯蚓富集土壤中的重金属Cd和Pb。
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备注/Memo
收稿日期：2020-03-09