茶园套种圆叶决明对杂草物种多样性的影响

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1、热带作物学报2013，34(12)：2503—2507ChineseJournalofTr0picalCro茶园套种圆叶决明对杂草物种多样性的影响罗旭辉-，刘明香1,2罗石海，章华武，韩海东，，应朝阳1福毒建省鸯山地学院,11,农7-程研究中心福建托福州350013一一福建省丘陵地区循环农业工程技术研究中心2福建省红壤山地农业生态过程重点实验室福建福州350013农业部福州农业环境科学观测实验站3长江大学生命科学院．湖北荆州4340234福建农林大学作物学院．福建福州350002摘要为明确圆叶决明对茶园杂草

2、生长的影响。观测闽北茶园套种圆叶决明1～2a春、夏、秋季杂草群落的多度、多样性指数、均匀度和生物量变化。结果表明：套种圆叶决明1～2a，茶园秋季杂草群落Simpson多样性指数和Shannon—Weiner多样性指数分别提高了0．1870．431和0．5672．312，均匀度指数提高了0．187—1．004。套种处理茶园全年杂草干重较常规栽培(人工除草)分别下降55．8％～61．6％。说明套种圆叶决明可以应用于马唐占优势的茶园．用于控制杂草生物量。关键词圆叶决明；套种；茶园；杂草；多样性中图分类号$542．

3、9文献标识码AEffectsofIntercroppingChamaecristarotundifoliainTeaPlantationonWeedDiversityLU0Xuhui。LIUMingxiang，一。LUOShihai，ZHANGHuawuHANHaidong，一．YINGZhaoyang1InstituteofAgriculturalEcology,FujianAcademyofAgriculturdSciences／FujianEngineeringandTechnologyResearc

4、hCenter，0rHillyPrataculture，Fuzhou，Fujian350013，China2FujianEngineeringandTechnologyResearchCenterforRecyclyingAgriculture／FujianKeyLaboratoryonEcologicalProcessesofHillyAgricultureinRedSoilRegion／FuzhouScientifcObservingandExperimentalStationofAgro-Enviro

5、nment，MinistryAgriculture，Fuzhou，F~jian350013,China3SchoolofLifeSciences，YangtzeUniversity,如H，Hubei434023，China4CollegeofCropSciences，FujianAgricultureandForestryUniversity,Fuzhou，Fuji~350002，ChinaAbstractChamaecristarotundf[oliaisalegumebeneficialforwater

6、andsoilconservationofteaplantation．Itplaysanimportantroleinthecontrolofweedgrowth．InordertoknowtheeffectsofC．rotundifoliaonweedgrowth，communityabundance，speciesdiversity，evennessandbiomassofweedswereinvestigatedinteagardenofnorthernFujianintercroppingChama

7、ecristarotundifoliaforoneortwoyearsinspring，summerandautumn．Theresultsshowedthatafteroneortwo-yearinterplant．weedSimpsonandShannon—Weinerindicesinautumnincreasedby0．187～0．431and0．567～2．312．respectively；evennessofweedevaluatedby0．187～1．004；andannualweedbiom

8、assdecreasedby55．8％61．6％．InterplantingCrotundifoliaactedmoreeffectivelyonthecontrolofweedbiomassinteaplantationwithcrabgrassasdominantspecies．KeywordsChamoecristarotundifolia；Intercropping；Teaplantation；Weed；