石英尾矿迹地土壤浸提液对禾草种子萌发特性的影响研究  

Effects of Soil Extract From Quartz Tailings on Germination Characteristics of Grass Seeds

作　　者：陈薇 陈平[1] Chen Wei;Chen Ping(School of Horticulture and Landscape Architecture,Zhongkai College of Agricultural Engineering,Guangzhou 510225,Guangdong,China)

机构地区：[1]仲恺农业工程学院园艺园林学院,广东广州510225

出　　处：《绿色科技》2024年第13期101-110,共10页Journal of Green Science and Technology

摘　　要：为探究土壤可溶物质浓度与pH值对石英尾矿迹地中禾草种子萌发的影响,以5种禾本科牧草为试验材料,采用去离子水、土壤原液、土壤原液稀释2倍、5倍、10倍与土壤原液pH值调节为:4、5、6、7的石英尾矿迹地土壤浸提液,进行不同处理,以种子萌发期相对发芽率、相对发芽势、相对发芽指数、相对活力指数、相对苗高和相对根长为评价指标,利用平均隶属函数进行综合评价。试验结果表明:在不同浓度矿区土壤浸提液下,稀释2倍处理组中,甜高粱(Sorghum bicolor)、高丹草(Sorghum bicolor×sudanense)、墨西哥玉米草(Purus frumentum)、皇竹草(Pennisetum hydridum)的隶属函数D值较高,分别为:0.64、0.59、0.67、0.68;狼尾草(Pennisetum alopecuroides)在稀释5倍处理组的隶属函数D值较高,为0.51;在不同pH值矿区土壤浸提液下,pH值为4处理组中,狼尾草的隶属函数D值较高,为0.77;pH值为6处理组中,墨西哥玉米草的隶属函数D值较高,为0.86。研究结果为石英尾矿复绿引进栽植禾本科牧草提供了参考。In order to explore the effects of soil soluble substance concentration and pH on the germination of grass seeds in quartz tailings,five kinds of gramineous forages were used as experimental materials.Deionized water,soil stock solution,soil stock solution diluted by 2 times,5 times and 10 times were adopted,and the pH of soil stock solution was adjusted to 4,5,6 and 7.The relative germination rate,relative germination potential,relative germination index,relative vigor index,relative seedling height and relative root length were used as evaluation indexes,and the average membership function was used for comprehensive evaluation.The results showed that the membership function D values of Sorghum bicolor,Sorghum bicolor×sudanense,Purus frumentum and Pennisetum hydridum were 0.64,0.59,0.67 and 0.68,respectively,when the soil extract of different concentrations were diluted 2 times.The membership function D value of Pennisetum alopecuroides was higher at 5 times dilution,which was 0.51.Under the soil extract of different pH mining areas,the membership function D value of Pennisetum alopecuroides was higher at pH 4,which was 0.77;the membership function D value of Zea mexicana was higher at pH 6,which was 0.86.The research results provide a theoretical basis for the introduction and planting of gramineous forage grass in quartz tailings.

关 键 词：石英尾矿 禾本科牧草 土壤浸提液 种子萌发 

分 类 号：S54[农业科学—作物学]