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《油茶幼林营养元素吸收及其分配特征.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、南方农业学报JOURNALOFSOUTHERNAGRICULTURE2012,43(6):802—805ISSN2095—1191;CODENNNXAABhttp://www.nfnyxb.conDOI:10.3969/j:issn.2095—1191.2012.06.802油茶幼林营养元素吸收及其分配特征曹继钊,王会利,唐健+,覃其云,农必昌,潘波(广西林业科学研究院/国家林业局中南速生材繁育实验室/广西优良用材林资源培育重点实验室,南宁530002)摘要:【目的】了解油茶各器官和营养元素吸收、累积及分配特征,为油茶林地施肥管理提
2、供科学依据。【方法】以长势较好的5.5年生油茶林为调查对象,测定其树干、树枝、树叶、主根和侧根的营养元素含量,分析营养元素吸收及分配特征。【结果】油茶各器官营养元素含量的排列顺序大致为N>K、Ca>Mg>P>Fe、Mn>Zn>B>Cu。油茶不同器官营养元素总含量的排列顺序:树叶>侧根>树枝>主根>树干。油茶树体营养元素贮藏总量为14.65g/株,其中,N、K、Ca的贮存量最高,其次是P、Mg,Fe、MByCu、Zn、B最低。油茶各器官营养元素贮存量的顺序排列:树叶>树干>主根>树枝>侧根。【结论】油茶树体N、K、Ca元素的吸收和累积
3、量最高,营养元素的分配与各器官的生物量不成比例关系,树叶和树干营养元素贮存量最高。关键词:油茶;营养元素;吸收;累积;分配中图分类号:$794.4文献标志码:A文章编号:2095—1191(2012)06—0802—04AccumulationanddistributionofnutrientelementsinyoungCamelliaoleiferaCAOJi—zhao,WANGHui—li,TANGJian+,QINQi-yun,NONGBi-chang,PANBo(GuangxiForestryResearchInstitu
4、te/KeyLaboratoryofCentralSouthFast-growingTimberCultivationofForestry,StateForestryBureauofChina/GuangxiKeyLaboratoryofSuperiorTimberTreesResourceCultivation,Nanning530002,China)Abstract:【Objective】Thepurposeofthestudywastounderstandaccumulationanddistributionofnutrien
5、telementsindifkrentDartsofyoungCamelliaoleiferainordertodevelopproperfertilizationtechniquesforforestlandsofCamelliaoleifera.【Method】Thenutrientelementcontentsoftrunk,branches,leaves,taprootandlateralrootsof5。5-yearoldCamel—liaoleiferawereanalyzed.【Result】Theconcentrat
6、ionofnutrientsinCame埘aoleiferawasfoundinthefollowingdescend—ingorder:N>K.Ca>Mg>P>FeandMn>Zn>B>Cu.Theorderoftotalnutrientcontentindifferentplantpartswasasfollows:leaf>lateralroot>branch>taproot>trunk.TotalquantityoftennutrientelementsinyoungCamelliaoleiferawasrecordedas
7、14.65gperplant.ThestorageofN,K,andCawasrecordedasthehighest,followedbyP,Mg,FeandMn,andthestorageofCu.ZnandBwasrecordedas10west.TheorderoftotalstorageoftennutrientelementsinyoungCamelliaoleiferawasleaf>trunk>taproot>branch>lateralroot.【Conclusion】Thequantityofabsorption
8、andaccumulationofN,KandcainCamelliaoleiferawasrecordedasthehighest.TheapplicationofCaandtraceelementsmaybeconsideredi
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