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时间:2018-04-15
《发酵果树枝碎屑对苹果幼树根系特征及叶片光合蒸腾的影响》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、园艺学报,2016,43(10):1989–1994.ActaHorticulturaeSinicadoi:10.16420/j.issn.0513-353x.2016-0273;http://www.ahs.ac.cn1989发酵果树枝碎屑对苹果幼树根系特征及叶片光合蒸腾的影响*宁留芳,杨洪强,曹辉,周春然,张玮玮,孟凡尧(山东农业大学园艺科学与工程学院,作物生物学国家重点实验室,山东泰安271018)摘要:以2年生盆栽红富士苹果[Malus×domesticaBorkh.‘RedFuji’/MalushupehensisRehd.]幼树为试材,将苹果枝干碎屑发酵后施入盆土,定
2、期调查苹果叶片光合与蒸腾速率、干周生长量、根系活力以及根系构型等指标。结果表明,向土壤施入质量比为2%和4%的发酵果树枝碎屑可以提高苹果幼树叶片净光合速率和根系活力,增加干周增长量,对叶片蒸腾速率和水分利用效率的影响不明显;2%的处理还能够增加新根数量,提高新根表面积和体积,促进新根加粗和加长生长,增大根系分形维数,促使根系结构复杂化,而施入4%的发酵果树枝碎屑则降低新根数量、体积和长度。综合分析表明,施用2%的发酵果树枝碎屑促进幼树根系和树干生长的整体效果好于4%的处理。关键词:苹果;幼树;发酵果树枝碎屑;光合性能;根系构型中图分类号:S661.1文献标志码:A文章编号:051
3、3-353X(2016)10-1989-06EffectsofFermentedCrumbsofBranchesontheRootCharacteristicandLeafPhotosynthesisandTransportationofYoungAppleTrees*NINGLiu-fang,YANGHong-qiang,CAOHui,ZHOUChun-ran,ZHANGWei-wei,andMENGFan-yao(StateKeyLaboratoryofCropBiology,CollegeofHorticultureScienceandEngineering,Shangdo
4、ngAgriculturalUniversity,Tai’an,Shandong271018,China)Abstract:Theexperimentwascarriedonusing2-year-oldpottedappletrees[Malus×domesticaBorkh.‘RedFuji’/MalushupehensisRehd.]withthefermentedcrumbsofapplebrancheswhichwereappliedtothepotswiththemassratioof2%and4%.Theratesofphotosynthesisandtranspo
5、rtation,incrementoftrunkgirth,rootactivityandrootarchitectureparametersfromeachtreatmentwereinvestigatedperiodically.Theresultsshowedthattheleafnetphotosyntheticrate,rootactivityandincrementoftrunkgirthincreasedafterthefermentedcrumbsofapplebrancheswereappliedtothesoilandnosignificanteffectsw
6、erefoundontheleaftransportationrateandwateruseefficiency.Thenumber,surface-area,volume,length,diameterandfractaldimensionofnewrootsincreasedandtherootstructurewasmorecomplexaftertheapplicationof2%fermentedcrumbs;Thenumber,surface-area,volumeandlengthofnewrootsdecreasedaftertheapplicationof4%f
7、ermentedcrumbs.Thecomprehensiveanalysisshowedthattheeffectsof2%dosageonthegrowthofrootandtrunkwerebetterthanthoseof4%.收稿日期:2016–07–04;修回日期:2016–10–10基金项目:国家‘十二五’科技支撑计划项目(2014BAD16B02);国家自然科学基金项目(31372016)*通信作者Authorforcorrespondence(E-mail:hq
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