畜禽废水处理下橐吾的生长和生理特性_王应军

核农学报2011，25(4):0812～0817JournalofNuclearAgriculturalSciences收稿日期:2011-02-05接受日期:2011-04-29基金项目:四川省教育厅重点项目(10ZA059)作者简介:王应军(1972-)，男，贵州沿河人，副教授，硕士生导师，主要从事环境水利、环境生物工程、废弃物处理与资源化等方面的研究。E-mail:wwyyjj1972@163.com文章编号:1000-8551(2011)04-0812-06畜禽废水处理下橐吾的生长和生理特性王应军张俊萍邓仕槐(四川农业大学资源环境学院，四川雅安625014)摘要:通过模拟人工湿地环境，以2种浓度畜禽废水分别处理橐吾(Ligulariasibirica)，研究其对橐吾生长和生理特性影响。结果表明:畜禽废水处理后，较高浓度和中浓度处理组的橐吾株高分别比对照增加了9.40%和6.51%，叶长分别增加14.24%和1.94%，叶宽分别增加12.94%和2.31%;较高浓度废水处理组的橐吾花期达62d，而中浓度和对照仅分别为56和51d，畜禽废水浓度越高对橐吾的影响越大;过氧化物酶(POD)活性和根系活力均表现为先降低再升高;丙二醛(MDA)含量变化趋势不规则，但整体低于自然生长状态;质膜最终也未发生明显的电解质外渗现象;净光合速率、气孔导度、胞间CO2浓度和蒸腾速率均整体表现为:较高浓度＞中浓度＞对照。因此，橐吾对畜禽废水有良好的适应能力和耐污能力，是优良的人工湿地植物。关键词:橐吾;畜禽废水;生长;观赏特性;生理特性GROWTHANDPHYSIOLOGICCHARACTERISTICSOFLigulariasibiricaUNDERLIVESTOCKWASTEWATERTREATMENTWANGYing-junZHANGJun-pingDENGShi-huai(CollegeofResourcesandEnvironment，SichuanAgriculturalUniversity，Sichuan，Ya’an625014)Abstract:EffectsofwastewateronthegrowthandphysiologiccharacteristicofLigulariasibiricawerestudiedthroughsimulatingconstructedwetland．Resultshowesthat，theplantheightofLigulariainhigherandmiddleconcentrationlivestockwastewatertreatmentincreasedby9.40%and6.51%，leaflengthincreasedby14.24%and1.94%，andtheleafwidthincreasedby12.94%and2.31%comparedtothecontrolgroup，respectively．TheflorescenceofLigulariainhigherconcentrationtreatmentgroupreached62d，whilethemiddleconcentrationtreatmentgroupandthecontrolwereonly56and51d．BothPODactivityandrootactivitydecreasedatfirst，andincreasedlater．ThevariationofMDAconcentrationperformedanirregulartrend，butitwaslowerthancontrol．Themembraneshowednoobviouschangeofelectrolyteleakagephenomena．Thenetphotosyntheticrate，stomatalconductance，intercellularCO2concentrationandtranspirationratefollowedtheorderofhigherconcentration＞middleconcentration＞control．Therefore，itcanbeconcludedthatLigulariahasgoodadaptabilityandpollutionresistanceabilitytolivestockwastewater，anditisanexcellentconstructedwetlandplant．Keywords:Ligularia;livestockwastewater;growth;ornamentalquality;physiologiccharacteristi