摘要
本文采用室内盆栽试验,在4 kg铜尾矿中分别加入腐熟鸡粪0、8、16、32 g,记作JF0(CK)、JF8、JF16、JF32处理方式。研究不同比例腐熟鸡粪改良铜尾矿后对菊科植物串叶松香草(Silphium perfoliatum)生长和尾矿基质性质的影响。结果表明:在尾矿基质中添加鸡粪改良后,植物株高、冠幅、叶长、叶宽、茎叶生物量、根系生物量、植物体总磷含量均显著增加(P<0.05),植物根长也有增加。随着串叶松香草的生长,尾矿基质中总氮、总磷含量增加,有效磷含量显著增加(P<0.05),土壤pH值和有效态Cu、Zn含量有所降低,土壤微生物量C、脲酶和脱氢酶活性提高。相关分析表明,尾矿基质中铵态氮含量与植物叶长、茎叶生物量、茎叶总氮呈显著正相关(P<0.05),有效磷含量与植物株高、冠幅、叶长、叶宽、茎叶生物量、根系生物量、茎叶总磷、根系总磷(P<0.01)和土壤脱氢酶活性(P<0.05)呈显著或极显著正相关,总磷含量与植物冠幅、叶长、叶宽、茎叶生物量、茎叶总磷、根系总磷呈显著正相关(P<0.05)。综合分析表明,串叶松香草在铜矿业废弃地植被恢复过程中具有较大应用潜力,鸡粪改良效果较好,JF16处理方式较为妥当。
Joining compost chicken manure 0,8,16,32 g,respectively in plants potted substrate with 4 kg tailings,and remembering for JF0（CK）,JF8,JF16,JF32 treatments,pot experiments were conducted to study the effects of different proportions of composted chicken manure-amended on growth of compositae silphium perfoliatum and substrate properties.The result showed that with increasing proportion of chicken manure in the tailings substrate,the plant height,crown width, leaf length,leaf width,shoot biomass,root biomass and total phosphorus of plants increased significantly（P0.05）,and plant root length increased also.With the growth of Silphium perfoliatum,the tailings substrate total nitrogen and phosphorus content increased,available phosphorus increased significantly（P0.05）,the soil pH value and available Cu,Zn content decreased,soil microbial biomass C,urease and dehydrogenase activities improved.Data analysis indicated that there was a significantly positive correlation between the tailings substrate ammonium nitrogen content and plant leaf length,shoot biomass and shoot total nitrogen（P0.05）, and between available phosphorus content and plant height,crown width,leaf length, leaf width,shoot biomass,root biomass,shoot total phosphorus,root toatl phosphorus（P0.01）,and soil dehydrogenase activities（P0.05）,and between total phosphorus content and plant crown width,leaf length,leaf width,shoot biomass,shoot total phosphorus and root total phosphorus（P0.05）.These findings indicated that Silphium perfoliatum had large potential application in the copper mining tailings vegetation restoration process,the chicken manure-amended had better effects,JF16 treatment could be a appropriate method.
出处
《西南农业学报》
CSCD
北大核心
2011年第5期1792-1798,共7页
Southwest China Journal of Agricultural Sciences
基金
环保公益性行业科研专项(201009041-02)
国家高技术研究发展计划(863)资助项目(2006AA06Z359)
关键词
铜尾矿
基质改良
串叶松香草
生态修复
Copper tailings
Chicken manure amendment
Silphium perfoliatum
Ecological restoration
