青冈无性系基株叶磷元素的时空分配特征  

The Spatial and Temporal Characteristics of Phosphorus in Leaf of Cyclobalanopsis glauca Genets

作　　者：宋桂全[1] 

机构地区：[1]潍坊学院生物与农业工程学院,山东省高校生物化学及分子生物学重点实验室,山东潍坊261061

出　　处：《福建林业科技》2015年第3期40-44,共5页Journal of Fujian Forestry Science and Technology

基　　金：国家自然科学基金资助项目(30200034);浙江省自然科学基金资助项目(301026)

摘　　要：利用调查、取样和分析技术对青冈无性系基株叶构件中P元素含量的分配格局进行研究。结果表明：青冈无性系基株上部叶、下部叶及萌生枝叶中P元素含量分别介于0.063％～0.181％、0.050％～0.158％、0.061％～0.082％之间。叶P元素含量上部叶＞下部叶＞萌生枝叶，但上部叶与下部叶差异不显著，上部叶与萌生枝叶P元素含量差异极显著，下部叶与萌生枝叶之间P元素含量差异显著。无性系基株上部叶与下部叶P元素的季节变化态势基本表现为上升→下降→上升→下降，萌生枝叶P元素基本表现为下降→上升的态势。 P元素含量季节变化明显，春季与其他季节差异极显著。The allocation pattern of nutrient is generally thought to exhibit a simple vegetative state.But few studies have measured the temporal variation and the spatial patterns in Cyclobalanopsis glauca.The allocation pattern of phosphorus （ P ） in leaf of C.glauca genets were studied by investigating, taking samples and analyzing.The leaf P concentrations ranged from 0.063% to 0.181%in the leaves of the upper layer （TUL） and ranged from 0.050%to 0.158% in the leaves of the lower layer（TLL） and ranged from 0.061%to 0.082%in the leaves of the ramets（ TLR）.And ranked in the order of TUL〉TLL〉TLR.The leaf P con-centrations in TUL was higher slightly than that in TLL,but no significant difference were detected.But the leaf P concentrations in TLR differed remarkably from that in TUL at P〈0.01 and differed from that in TLL at 0.01〈P〈0.05.Generally,the amplitude of the P concentrations was higher in TLL than in TUL in the ortets.The seasonal dynamics of the leaf P concentrations was similar in TUL and in TLL and that increased in spring,then decreased gradually,and then increased in autumn and decreased slightly in win-ter,but that in TLR was different,decreased continuous and increased in winter.Within the growth period,the leaf P concentrations differ significantly among the months,specifically between the April and the others.

关 键 词：青冈 无性系 磷 分配特征 

分 类 号：S718.554.2[农业科学—林学]