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时间:2018-03-07
《大气co2浓度升高对绿豆生长发育与产量的影响》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、核农学报2011,25(2):0358—0362358JournalofNuclearAgriculturalSciences文章编号:1000—8551(2011)02-0358~5大气CO2浓度升高对绿豆生长发育与产量的影响李萍郝兴宇杨宏斌林而达(1.山西农业大学农学院,山西太谷030801;2.中国农业科学院农业环境与可持续发展研究所/农业部农业环境与气候变化重点实验室,北京100081)摘要:研究大气CO浓度升高对绿豆影响,有助于人们了解未来气候变化后绿豆生产的变化,以提前采取必要的应对措施趋利避害。本研究利用FACE(Free
2、AirCOEnrichment)系统在大田条件进行了绿豆生长发育及产量受CO浓度升高影响的试验。结果表明:大气CO,浓度升高后,绿豆叶面积、株高、节数、茎粗增加;倒数第一完全展开叶叶面积增加6.1%~34.65%,倒数第二完全展开叶叶面积增加4.45%~43.64%;收获期,绿豆株高、节数、茎粗分别增加19。56%、8.24%、9.71%;绿豆叶片叶绿素含量则有下降的趋势,蕾期和花荚期,倒数第一片完全展开的叶片叶绿素含量分别下降1.53%、14.21%,花荚期,倒数第二片完全展开的叶片叶绿素含量下降7.06%;收获后单株地上部分生物量增
3、加24.45%,单株籽粒产量增加13.87%,而收获指数则有下降趋势;产量的提高是由于单株有效荚数显著增加,而单荚粒数和百粒重变化不显著。未来大气CO浓度升高将促进绿豆的生长发育,使绿豆地上部分生物量和产量增加。关键词:绿豆;CO:浓度升高;FACE;气候变化;生长;产量EFFECTSOFAIRCOENRICHMENTONGROWTHANDYIELDOFMUNGBEANLIPingHAOXing.yuYANGHong.binLINEr-da(1.CollegeofAgriculture,ShanxiAgriculturalUnivers
4、ity,Taigu,Shanxi030801;2.InstituteofEnvironmentandSustainableDevelopmentinAgriculture,ChineseAcademyofAgriculturalSciences,Beijing100081)Abstract:Researchonmungbeanresponsetoelevated[CO2]willbenefittolearnaboutchangesofmungbeanyieldunderfutureclimatechangeandpossiblecorr
5、espondingmeasures.FACE(FreeairCO2enrichment)wasusedinthestudyofmungbean.Resultsshowedthattheleafarea,height,nodenumberandstemdiameterincreasedwithelevationof[CO2].Elevated[CO2]increasedtheyoungestexpandedleafandthereciprocal2ndexpandedleafareaby6.1%~34.65%and4.45%~43.64%
6、,respectively.Elevated[CO2]significantlyincreasedtheheight,nodenumberandstemdiameteratmatureby19.56%,8.24%and9.71%,respectively.However,thecontentofchlorophyllinleafdecreasedwithelevationof[CO2].Elevated[CO2]significantlyreducedthecontentofchlorophyllintheyoungestexpande
7、dleafatbudstageandflowering—poddingstageby1.53%and14.21%.respectively.Thecontentofchlorophyllinreciprocal2ndexpandedleafdecreasedby7.06%attheflavering-poddingstagewithelevated[CO2].Theabove—groundbiomassweightperplantwasincreasedby24.45%withelevationof[CO2].Becauseofthei
8、ncreaseinpodnumberperplant,theyieldperplantwasincreasedby13.87%inFACE,buttheharvestindexwasdescent.收稿日期
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