文章编号：2096-3424（2023）03-0286-05DOI：10.3969/j.issn.2096-3424.2023.03.014精喹禾灵胁迫下萱草光合速率、叶绿素含量及根活力影响余月书1，迟法安2，张宝2，朱音1，吴子凡1，张志国1（1.上海应用技术大学生态技术与工程学院,上海201418；2.威海永达绿色技术有限公司,山东威海264200）摘要：以萱草为供试对象，研究精喹禾灵400、800、1200mg/kg浓度处理对萱草光合速率、叶绿素含量及根活力影响。结果表明，同对照相比，药后同一时间，不同浓度精喹禾灵对萱草光合速率、叶绿素含量及根活力无显著影响。精喹禾灵处理后，萱草光合速率、叶绿素含量及根活力表现出明显的时间效应。双因素方差分析表明药后第6、10d萱草光合速率显著高于药后第13、17d；药后第6d，萱草光合速率最高，CO2达9.9417mg·cm–2·h–1，比药后第13d高287.48%；叶绿素a、叶绿素b及总叶绿素含量均在药后第8天达最高，以后随时间延长呈现出下降趋势；药后第10d萱草根活力达到最大值，分别比药后第6、13d显著高出136.67%与77.11%。研究结果可为精喹禾灵在萱草田间应用提供理论依据。关键词：精喹禾灵；光合速率；叶绿素；根活力；萱草中图分类号：S432.6文献标志码：AEffectofquizalofop-p-ethylonphotosyntheticrate,chlorophyllcontentandrootvitalityofHemerocallisYUYueshu1，CHIFa’an2，ZHANGBao2，ZHUYin1，WUZifan1，ZHANGZhiguo1（1.SchoolofEcologicalTechnologyandEngineering,ShanghaiInstituteofTechnologyShanghai,201418；2.WeihaiYongdaGreenTechnologyCo.,Ltd.,Weihai264200,Shandong,China）Abstract：UsingHemerocallisastheexperimentalobject,theeffectsofphotosyntheticrate,chlorophyllcontentandrootvitalityofHemerocallistreatedwithquizalofop-p-ethylof400,800,and1200mg/kgwerestudied.Resultsshowedthattherewasnosignificantdifferencebetweenthetreatmentandcontrolgroupintermsofthephotosyntheticrate,chlorophyllcontentandrootvitalityofHemerocallisaftertreatmentatthesametime.Aftertreatmentwithquizalofop-p-ethyl,thephotosyntheticrate,chlorophyllcontent,androotvitalityofHemerocallisshowedsignificanttimeeffects.Two-wayANOVAshowedthatthephotosyntheticrateofHemerocallisonthe6thand10thdaywassignificantlyhigherthanthatonthe13thand17thdaysaftertreatment;Onthe6thdayafterthetreatment,thephotosyntheticrateofHeme...
