摘要
文章以黑麦草种子作为研究对象,采用水培法研究了不同浓度的镉、铅单一及其复合污染对黑麦草种子根长、芽长、发芽率及发芽势的影响,为超富集植物种子的筛选、重金属污染治理等提供依据。结果表明:单一重金属污染下,黑麦草种子发芽率和发芽势与对照组无明显差异,不同处理中,随着浓度的升高对黑麦草芽长、根长的抑制作用增加;复合污染条件下,当Cd^(2+)/Pb^(2+)复合浓度小于(2+20)mg/L时,重金属对黑麦草芽长、根长的生长具有促进作用,反之则抑制黑麦草的生长,对照组与Cd^(2+)/Pb^(2+)复合浓度为(2+20)mg/L无显著差异,与其他各组间存在显著差异(p<0.05)。
Taking ryegrass seeds as the research object,the effects of single and combined pollution of cadmium and lead at different concentrations on root length,bud length,germination rate and germination potential of ryegrass seeds were studied by hydroponics,which provided the basis for the selection of super-enriched plant seeds and the treatment of heavy metal pollution.The results showed that under single heavy metal pollution,the germination rate and germination potential of ryegrass seeds were not significantly different from those of the control group.In different treatments,the inhibition of ryegrass germination length and root length increased with the increase of concentration.Under compound pollution conditions,when the combined concentration of Cd2+/Pb2+was less than(2+20)mg/L,heavy metal promoted the growth of ryegrass germination length and root length,and vice versa,inhibited the growth of ryegrass.There was no significant difference in ryegrass growth between control group and Cd2+/Pb2+compound concentration of(2+20)mg/L,but there was significant difference between control group and other groups(p<0.05).
作者
洪燕
杨宁宁
周粉
张军
HONG Yan;YANG Ning-ning;ZHOU Fen;ZHANG Jun(College of Geography and Environment,Baoji University of Arts and Sciences,Baoji 721013,China)
出处
《价值工程》
2019年第15期154-157,共4页
Value Engineering
基金
宝鸡文理学院2017年陕西省大学生创新创业项目(2017dc009)
宝鸡市河流灌渠周边农田土壤重金属空间变异性及源解析研究"(YJSCX18YB06)
关键词
镉
铅
黑麦草
萌发特征
cadmium
plumbum
perennial ryegrass
germination characteristics
