不同宿根花卉栽植对黄河三角洲表层土壤盐分和养分的影响
Effects of different perennial flowers planting on shallow soil salinity and nutrients in the Yellow River Delta
[目的]为探究栽植不同宿根花卉对黄河三角洲表层土壤盐分和养分的影响，[方法]以栽植马蔺(Iris lactea)、紫穗狼尾草(Pennisetum alopecuroides‘Purple’)、常夏石竹(Dianthus plumarius)、天人菊(Gaillardia Pulchella)、大花萱草(H emerocallis hybrida)和八宝景天(Sedum spectabile)的土壤为研究对象，以未栽植宿根花卉的裸地为对照，分析土壤含盐量、电导率、Na+、Cl-、速效钾和有效磷含量。[结果]①栽植宿根花卉对黄河三角洲盐渍土具有一定的生态调控效果。栽植马蔺和紫穗狼尾草可显著降低 0-10 cm 土层的含盐量和电导率，同时马蔺对 10-20 cm 土层的含盐量和电导率也有一定的降低效果。②天人菊、常夏石竹可显著降低 0-10 cm土层的Na+和Cl-含量，马蔺和天人菊对土壤中Cl-去除效果较好。③不同宿根花卉对表土层速效钾含量影响不显著，而栽植不同宿根花卉可降低 10-20 cm土层的有效磷含量，紫穗狼尾草降低效果较小。[结论]栽植马蔺、紫穗狼尾草对盐渍土的改良效果较好，常夏石竹、天人菊、八宝景天较差，该研究结果可为黄河三角洲地区选择合适的宿根花卉进行盐渍土生态改良提供一定的参考依据。
[Objective]In order to explore the effects of planting different perennial flowers on salt and nutrients in saline soil of the Yellow River Delta.[Methods]In this study,the soils planted with Iris lactea,Pennisetum alopecuroides'Purple',Dianthus plumarius,Gaillardia pulchella,Hemerocallis hybrida and Sedum spectabile were used as the research objects,and the bare land without perennial flowers was used as the control.The soil salt content,electrical conductivity,Na+,Cl-,available potassium,and available phosphorus content were analyzed.[Result]①The results showed that planting perennial flowers had a certain ecological regulation effect on saline soil in the Yellow River Delta.Among them,planting I.lactea and P.alopecuroides can significantly reduce the salt content and electrical conductivity of 0-10 cm soil layer,and I.lactea also has a certain reduction effect on 10-20 cm soil layer.②The contents of Na+and Cl-in 0-10 cm were significantly reduced by G.pulchella and D.plumarius,and the removal effect of Cl-in soil by Iris lactea and G.pulchella was better.③Different perennial flowers had no significant effect on the content of available potassium in topsoil,while planting different perennial flowers could reduce the content of available phosphorus in 10-20 cm soil layer,and the effect of P.alopecuroides was less.[Conclusion]The improvement effect of saline soil by I.lacteal and P.alopecuroides were better than the perennial flowers,such as D.plumarius,G.Pulchella and S.spectabile.The results of this study can provide some reference for selecting suitable perennial flowers for ecological improvement of saline soil in the Yellow River Delta.
李仕辉;芦月;赵西梅;王元波;陈为峰;夏江宝;陈印平;张子涵;
山东航空学院山东省黄河三角洲生态环境重点实验室,滨州 256603;山东航空学院山东省黄河三角洲生态环境重点实验室,滨州 256603;山东航空学院山东省黄河三角洲生态环境重点实验室,滨州 256603;山东省国土空间生态修复中心,济南 250014;山东农业大学资源与环境学院,泰安 271018;山东航空学院山东省黄河三角洲生态环境重点实验室,滨州 256603;山东航空学院山东省黄河三角洲生态环境重点实验室,滨州 256603;山东航空学院山东省黄河三角洲生态环境重点实验室,滨州 256603;
S682.1
Yellow River Delta Saline soil Perennial flowers Soil salinity Soil nutrients
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