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时间:2020-03-24
《冬季淹水对柳树生长及恢复生长的影响.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JOURNALOFSOUTHERNAGRICULTUREISSN2095—1191;CODENNNXAABhttp://www.nfny]cb.eonlDOI:10.3969/j:issn.2095—1191.2013.2.275冬季淹水对柳树生长及恢复生长的影响钟彦,刘正学+,秦洪文,熊瑛,向丽霞,刘锐,杨艳,马睿(重庆三峡学院生命科学与工程学院,重庆万州区404100)摘要:【目的】研究冬季淹水对柳树生长及恢复生长的影响,为进一步探讨柳树在消落带中的适应机理奠定基础。【方法】模拟三峡水库水位运行方案,在冬季对岸生植物柳树进行60d全淹和半淹处理,然后出水恢复30d,分析水淹和
2、恢复结束时植株形态特征、生物量和非结构性碳水合物含量变化。【结果】柳树在全淹条件下.没有叶片、新枝及不定根生长,出水后迅速生长,经30d恢复,其形态特征和生物量与对照无显著差异,但根系可溶性糖含量显著高于不作淹水处理的对照。半淹对柳树形态特征和生物量影响不显著,但叶片可溶性糖含量显著高于对照,出水30d后,其形态特征、生物量和非结构性碳水化合物含量与对照均无显著差异。【结论】柳树在全淹条件下生长被限制,出水后迅速恢复生长;半淹对柳树生长及恢复生长均无明显抑制作用。关键词:柳树;全淹;半淹;形态特征;非结构性碳水化合物;三峡库区中图分类号:$792.12文献标志码:A文章编号:2095—119
3、1(2013)02—0275—05EffectsofwintersubmergenceandwaterloggingongrowthandrecoverygrowthofSalixbabylonicaZHONGYan,LIUZheng-xue+,QINHong-wen,XIONGYing,XIANGLi—xia,LIURui,YANGYan,MARui(CollegeofLifeScienceandEngineering,ChongqingThreeGorgesUniversity,Chongqing404100,China)Abstract:【Objective】Thecurrentexp
4、erimentwasconductedtostudytheeffectsofwinterwaterloggingongrowthandrecoverygrowthofSalixbabylonicatoprovidereferencesforfurtherresearchonadaptivemechanismofSajixbabflonicainthehydro-fluctuationbelt.【Method】AccordingtotheoperationschemeofThreeGorgesReservoir.inwinter.thetreesofSalixbabylonicaweresub
5、mergedandwaterloggedfor60dorsemi—emergedfor30dinlab,thengotoutofwatertore—coverfor30d.Themorphologicalcharacteristics,biomassandnon—stmcturalcarbohydratecontentofplantswereanalyzedindifferenttreatments.【Result】Theresultsshowedthat:(1)undersubmergencecondition,nonewleaves。branchesandadventitiousroot
6、sgrew.Afteremergence.thequickre-growthoccurred.After30d.therewasnosignificantdifferenceinmorphologicalcharacteristicandbiomass.comparedwithcontr01.butIhesolublesugarcontentofrootswashigherthancontr01.(2)Afterwaterlogging,therewerenosignificanteffectsonmorphologicalcharacteristicandbiomass.butsolubl
7、esugarcontentofleaveswassignificantlyhigherthancontr01.Afterrecoveryfor30d,therewasnosignificantdifferenceinmorphologicalcharacteristic,biomassandnon—structuralcarbohydratecontent,comparedwithcontr01.【Concl
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