少花龙葵与芦荟间种对镉胁迫的效应-论文.pdf

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1、安徽农业科学，JournalofAnhuiAsri．Sci．2015，43(10)：96—100责任编辑黄小燕责任校对况玲玲少花龙葵与芦荟间种对镉胁迫的效应何彩甄，王建煌，裴婕，陈颖芝，李文浩，付善明(广州大学环境科学与工程学院，r~f-'N510006)摘要[目的]研究少花龙葵与芦荟间种对镉胁迫的效应。[方法]通过不同程度镉胁迫的种植培育，研究少花龙葵与芦荟间种模式下镉的分布，考察间种模式下对少花龙葵镉的积累影响，并对其风险评价。[结果]少花龙葵在生长期对镉胁迫有明显的敏感反应，对其株高、叶绿素含量影响不大，略微影响鲜重。土壤镉处理浓度为0．6

2、0ms／kg时，少花龙葵叶子镉浓度明显比单种低，虽间种的芦荟比单种高，但两者叶子符合绿色行标；土壤镉浓度>0．印ms／kg时，少花龙葵趋向富集镉，吸收系数间种大于单种，风险相对于芦荟更高，芦荟处于更有利和安全的位置。[结论]选取合适的植物间种不失为经济合理的处理低浓度镉土壤的方法，高pH和高有机质含量使cd2不容易转移至植物。关键词少花龙葵；芦荟；镉胁迫：间种中图分类号S181．3文献标识码A文章编号0517—6611(2015)1O一096—05CadmiumStressEfectsonS．photeinocarpumNakamuraInter

3、croppingwitllAloeveraHECai-zhen，WANGJian-huang，PEIJieetal(SchoolofEnvironmentalScience&Engineering，GuangzhouUniversity，Guangzhou，Guangdong510oO6、Abstract[Objective]TheresearchaimedtostudytheCadmiumstressefectsonS．photeinocarpumNakamuraintereroppingwithAloevera．[Method]Thecadm

4、iumdistributionofS．photeinocarpumNakamuraintercroppingwithAloeverawasstudiedbydifferentlevelsofcadmiumstressplantingcuhivation，theaccumulationofcadmiuminfluenceofS．photeinocarpumNakamuraandtheevaluationofitsriskwereanalyzedunderinterplantingmode．[Resuh]S．photeinocarpumNakamur

5、ainthegrowthtimeobviousallergicreactionstocadmiumstressandhadlittleeffectonitsheightandchlorophyllcontent，butslighflyaffectedonfreshweight．WhenSoilCdconcentrationwas0．60mg／kg，thecadmiumconcentrationsofS．photeinocarpumNakamuraleavesweresignificantlylowerthansinglespecies，butbo

6、thsingleandinterplantingmodeofA1一oeverawereinkeepingwithGreenindustrystandards．WhenSoilCdconcentrationsgreaterthan0．60ms／kg，S．photeinocarpumNakamuratendstoenrichcadmium，atthesametimeitsabsorptioncoefficientgreaterthansinglemode．DuetothehigherriskofS．photeinocarpumNa—kamura，Al

7、oeverawasprotectedtoabetterandsaferplace．[Conclusion]SelectingsuitableplantspeciesCallyetberegardedaseconomicallyreasonablemethodstoresolvethelowconcentrationofcadmiuminsoil．SoilwithhighpHandhighorganicmattercontentmakesCdnoteas—ilytotransferredtotheplant．KeywordsS．photeinoca

8、rpumNakamura；Aloevera；Cadmiums~esses；lnterplanting植物间种对自然资源如光能、热量、水分