摘要
采用盆栽试验,研究了4种改良剂对铅锌尾矿污染土壤中龙须草生长和叶片叶绿素含量的影响。结果表明,改良剂处理土壤生长的龙须草长势明显优于对照,地上部生物量均显著高于对照(P≤0.05),增产效果均>100%。4种改良剂缓解污染土壤中重金属对龙须草毒害作用的大小顺序为钙镁磷肥>碳酸钙>有机肥>海泡石。4种改良剂在不同处理浓度下对龙须草生物量和叶绿素含量的影响趋势表现出一定的相关性,其中随着碳酸钙处理浓度的增加,龙须草生物量和叶绿素含量呈下降趋势;其他3种改良剂随着处理浓度的升高,龙须草生物量呈上升趋势,而叶绿素含量则呈先上升后下降的趋势。
Abstract： Effects of four kinds of modifiers on growth and chlorophyll content of Eulaliopsis binata growing on the soil pol- luted by lead/zinc gangue were investigated. The results show that the plants in the treated soils grew much better than in CK, with biomass of the shoots increased by over 100% （P ~〈0.05）. All the four kinds of modifiers lightened the poisoning effect of the heavy metals on Eulaliopsis binata, but varied in effect in the order of calcium magnesium phosphate 〉 CaC03 〉 organic manure 〉 sea-foam. With the rise of the application rate of CaCO3 , biomass and chlorophyll content of Eu- laliopsis binata presented a downward trend ; while with the rise of the application rate of the other three, biomass of Eulali- opsis binata showed an ascendant trend, but chlorophyll content a trend of rise first, then fall.
出处
《农村生态环境》
CAS
CSSCI
CSCD
北大核心
2005年第4期54-57,共4页
Rural Eco-Environment
基金
中日合作丰田基金资助项目(ToyotaFundD01-B3-010)
关键词
污染土壤
铅锌尾矿
龙须草
改良剂
植物修复
钙镁磷肥
碳酸钙
有机肥
海泡石
polluted soil
lead/zinc gangue
Eulaliopsis binata
modifier
phytoremediation
calcium magnesium phosphate
CaCO3
organic manure
sea-foam
