正文描述:《两种除草剂对紫茎泽兰光合特性的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、农业环境科学学报2010,29(7):1247-1253JournalofAgro-EnvironmentScience两种除草剂对紫茎泽兰光合特性的影响1,2,31,21,21,21,21,21,2刘小文,王秋霞,郭美霞,白洁,赵云,李小艳,曹坳程,333何月秋,肖春,吴国星(1.中国农业科学院植物保护研究所,北京100193;2.农业部农药化学与应用重点开放实验室,北京100193;3.云南农业大学植物保护学院,昆明650201)摘要:紫茎泽兰是一种重要的外来入侵生物,已在我国西南地区泛滥成灾。为了探明甲嘧磺隆和氨氯吡啶酸对紫茎泽兰光合特性的影响,为紫茎
2、泽兰高效化学防除提供参考依据,采用单因素随机区组设计,对盆栽紫茎泽兰喷施不同浓度的甲嘧磺隆可溶性粉剂和氨氯吡啶酸水剂,测定施药后1~7d紫茎泽兰几个光合特性参数。结果表明,随浓度和时间的增加,紫茎泽兰的光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、胞间CO浓度(Ci)及叶绿素含量呈下降趋势。0.12g·L-1甲嘧磺隆和1.75g·L-1氨氯吡啶酸能有效地2抑制紫茎泽兰的光合作用,这两种药剂用量几乎减少一半。关键词:甲嘧磺隆;氨氯吡啶酸;紫茎泽兰;光合特性中图分类号:X503.233文献标志码:A文章编号:1672-2043(2010)07-1247-
3、07ImpactsofTwoHerbicidesonPhotosynthesisofEupatoriumAdenophorumSprengLIUXiao-wen1,2,3,WANGQiu-xia1,2,GUOMei-xia1,2,BAIJie1,2,ZHAOYun1,2,LIXiao-yan1,2,CAOAo-cheng1,2,HEYue-qiu3,XIAOChun3,WUGuo-xing3(1.InstituteofPlantProtection,ChineseAcademyofAgriculturalSciences,Beijing100193,Chin
4、a;2.KeyLaboratoryofPesticideChemistry&ApplicationTechnology,MinistryofAgriculture,Beijing100193,China;3.CollegeofPlantProtection,YunnanAgriculturalUniversity,Kunming650201,China)Abstract:EupatoriumadenophorumSpreng,asanimportantviciousalieninvasivespecie,hasspreadalloversouth-westC
5、hinaincludingYunnan,Guizhou,Sichuan,Xizangandsoon.Ithasresultedinheavyeconomiclossestoagricultureforestandhusbandry,andcausedseveredamageofecosystemequilibriumintheinvasionareas.ThecontroltoCroftonweedisimperative,whilepreviousstudieshaveshownthatthecontrolefficiencyofsulfometureon
6、methylandpicloramtoE.adenophorumwereexcellent.Apotexperimentwithsingle-factorrandomizedblockdesignwasconductedtoidentifytheimpactofsulfometureon-methylandpicloramonthephotosynshesisofE.adenophorum.Sulfome-turon-methylsolublepowderandpicloramaqueoussolutionagentwithaserialconcentrat
7、ionsweresprayedtoE.adenophorum,respectively,Severalphotosyntheticindicesweredeterminedfrom1dto7daftertreatment.Theresultsshowedthatphotosynthesis(Pn),stomatalcon-ductance(Gs),transpirationrate(Tr),intercellularCO2concentration(Ci),andthecontentofchlorophyllintheweedplantsalongwitht
8、heincreaseoftheconcentrati
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