铜尾矿对五种牧草生长情况的影响

Effects of Copper Mine Tailings on Growing Status of Five Forage Grass Species.

通过盆栽实验,分析了铜尾矿对五种牧草生长发育和重金属抗性的影响。结果表明,百喜草、狗牙根、苇状羊茅能在铜尾矿上正常生长,实验草种的优劣势比较结果依次为:百喜草1.00>狗牙根0.98>苇状羊茅0.85>黑麦草0.73>苏丹草0.55。百喜草、狗牙根、苇状羊茅被认为是铜尾矿植被恢复与重建的优良先锋草种,并具有较强的重金属抗性。

Through pot culture experiments, the effects of copper mine tailings on growing status and resistance to heavy metals of five forage grass species were investigated. The results showed that Paspalum notatum,Cynodon dactylon, Festuca arundinacea can grow normally in copper mine tailings.The priority degrees of the experimental grass species followed the sequence:Paspalum notatum1.00>Cynodon dactylon0.98>Festuca arundinacea0.85>Lolium perenne 0.73 >Sorghum sudanense0.55.Paspalum notatum,Cynodon dactylon,Festuca arundinacea are suitable pioneer plant species for re_vegetation in the site type of mine tailings,owning to their high retention capcities to heavy metal.