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时间:2020-03-25
《油茶成熟林生物量积累及营养分配规律.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J0uRNAL0FsouTHERNAGRIcuIJuREISSN2095—1191:CODENNNXAABhttp:,/’nm.nfnyxb.cnDOI:10.3969,j:issn.2095—1191.2014.2.255油茶成熟林生物量积累及营养分配规律宋贤冲,唐健,覃其云,潘波,曹继钊+(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530003)摘要:【目的】探索油茶成熟林油茶不同器官的生物量积累及养分吸收分配规律,为油茶成熟林养分需求和科学施肥及解决油茶低产问题提供参考依据。【方法】选择油茶成熟林样方中具有代表性的调查样株
2、,用标准木的方法测定样株不同器官的生长性状指标、生物量及营养元素含量。【结果】油茶成熟林树高、冠幅生物性状指标呈正态分布,生物量以地上部分占绝对优势。不同器官营养元素均以全氮含量最高,其次为全钾和全磷,铜和硼含量最低。方差分析结果表明,除了全磷和铜外,其余元素含量在地上和地下部分不同器官间的差异均达显著水平(P3、:2095—1191(2014)02一0255—04T讧echaIlismofbiomassaccumulationandnutrientdistributioninC冶meIljao4、eifeI翟maturef10restSONGXian—chong,TANGJian,QINQi—yun,PANBo,CA0Ji—zha0+(GuangxiForestryResearchInstitut涨eyIJaboratoryofCentralSouthFas卜gm们ngTiIllberCultivationofForestr)rMinistryofChina/GuangxiKeyLaborator5、yofSuperior’rimberTreesResourceCultivation,Nanning530003,China)Abstmct:【0bjective】InoIdertoprovidereferencesforscientificfertilizationandsolvethelow—yieldpmblemofoiltea,thepresentexperimentwasconductedtostudythemechanismofbiomassaccumulationandthedistributionofnutrientsindif-ferentorgaIlsofc踟eⅡ函o6、jeif豳atmaturestage.【MetIlod】RepresentativesamplingtreesintllreequadratsofC砌e胁a甜ej抬raatmaturestagewerechosentodeteminethegrowthindicators,biomassandnutrientcontentsofdi矗.erentorgansac—cordingtothemethodofmodeltree.【Result】Di自krentgrowthindicatorsshowednornlaldistIibutionandbiomassintheabove—gmundw7、asabsolutelypredominanLIndifferentorgans,theh培hestnutrientswerefoundtobetotalN,f0UowedbytotalKandtotalP,CuandBwerethelowesLr11levarianceanalysisresultsindicatedsigIl讯caIltdi&rencesindi艉rentnutrientsexceptPandCuindi妇Ferentorgans(P<0.05).【Conclusion】Theassimilationanddistributionofnutrientelementsi8、ndifferentorganswasdi归ferenLNandKwerethemostimportantelementsfor(’a脚eI如okmjraatmaturestage,hencemoreNandKshouldbeaddedintothefertilizertopreventlow—yieldC台meI如forest.1【eywOrds:Ca脚eⅡ函de“≥ra;matureforest;biomass;nutrient
3、:2095—1191(2014)02一0255—04T讧echaIlismofbiomassaccumulationandnutrientdistributioninC冶meIljao
4、eifeI翟maturef10restSONGXian—chong,TANGJian,QINQi—yun,PANBo,CA0Ji—zha0+(GuangxiForestryResearchInstitut涨eyIJaboratoryofCentralSouthFas卜gm们ngTiIllberCultivationofForestr)rMinistryofChina/GuangxiKeyLaborator
5、yofSuperior’rimberTreesResourceCultivation,Nanning530003,China)Abstmct:【0bjective】InoIdertoprovidereferencesforscientificfertilizationandsolvethelow—yieldpmblemofoiltea,thepresentexperimentwasconductedtostudythemechanismofbiomassaccumulationandthedistributionofnutrientsindif-ferentorgaIlsofc踟eⅡ函o
6、jeif豳atmaturestage.【MetIlod】RepresentativesamplingtreesintllreequadratsofC砌e胁a甜ej抬raatmaturestagewerechosentodeteminethegrowthindicators,biomassandnutrientcontentsofdi矗.erentorgansac—cordingtothemethodofmodeltree.【Result】Di自krentgrowthindicatorsshowednornlaldistIibutionandbiomassintheabove—gmundw
7、asabsolutelypredominanLIndifferentorgans,theh培hestnutrientswerefoundtobetotalN,f0UowedbytotalKandtotalP,CuandBwerethelowesLr11levarianceanalysisresultsindicatedsigIl讯caIltdi&rencesindi艉rentnutrientsexceptPandCuindi妇Ferentorgans(P<0.05).【Conclusion】Theassimilationanddistributionofnutrientelementsi
8、ndifferentorganswasdi归ferenLNandKwerethemostimportantelementsfor(’a脚eI如okmjraatmaturestage,hencemoreNandKshouldbeaddedintothefertilizertopreventlow—yieldC台meI如forest.1【eywOrds:Ca脚eⅡ函de“≥ra;matureforest;biomass;nutrient
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