吊丝单竹笋期叶片特性研究.PDF
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热带亚热带植物学报 2004,l2(5):444—448
JourndofTropicalandSubtropcialBotany
吊丝单竹笋期叶片特性研究
郑郁善 , 陈礼光
(福建农林大学林学院,福建福州3500021
摘要:对 3种不同年龄的吊丝单竹株在不同发笋时期、不同竹冠部位的叶片比叶重、光合、呼吸性状及N、P、K含量等
进行测定,结果表明:吊丝单竹在不同发笋时期、不同竹冠部位各项指标均有较大差异。比叶重发笋盛期高于初期和末
期,随着竹株年龄增大而减小,随着竹冠的升高而增大;净光合速率盛期高于初期,光呼吸速率和暗呼吸速率则初期高
于盛期,并且不同竹龄、不同竹冠部位之间均表现出较大的差异;N、P、K含量 由发笋初期至盛期逐渐减小,N含量 以
la2a3a,以竹冠中部最高,P、K含量则随着竹冠的升高而减小,随着竹株年龄的增大而增大。这为经营管理吊丝单
竹林提供科学依据。
关键词:吊丝单竹:笋期:竹叶;生理特性
中图分类号:Q945 文献标识码:A 文章编号:1005—3395(2004)05一O444—05
SomePhysiologicalCharacteristicsoftheLeavesof
Dendrocalamopsisvvaarnioo--ssttrrmiatadurinngil.Shhoooottling
ZHENG Yu—shan, CHEN Li—guang
(ForestryCollegeof AgricultureandForestryUniversity,Fuzhou350002,China)
Abstract:Specificleafweight,photosyntheticrate,photorespirationrate,aswellasN,P,K contentswere
measuredinhteleavesofDendrocalamopsisvario-striatagrowninChishanForestFarminFujianProvineeduring
shootdevelopment.Resultsindicatedthatspecificleafweihgt(SLW)washihgeratshootabundantstage(inmid
July)htna htatatearlysatge(on12,June)nadlatesatge(on10,September).SLW decreasedashtebambooage
increased,nadincreasedwiht hteascendinglevelsofleaflocationonbamboostems.Netphotosny theticrateat
shootabundantsatgewashihgerthanthatatearlysatge.whereasphotorespirationrateanddarkrespirationrate
werehihgerateralysatge.ThecontentsofN,PnadKinbmabooleavesdecreasedrgaduallyduringshooting
period.Ncontentinleaveswasintheorderofl—year—old2一year—old3一year-oldbmaboo.andbeingthehihgest
inleavesonmidpartofbma boostems, whereasthecontentsofPandK decreasedwiht theascendinglevelsof
leavesonstems,na dincreasedwiht theincreaseofthebambooage.Theresultswouldprovideguidancefor
scientificmanagementofD.vario-striataplnatnig.
Keywords:Dendrocalamopssivario-striata;Shootingperiod;Bma booleaves;Physiologicalcharacterist
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