| 刚竹属5种竹类植物叶片N、P含量及内吸收率 |
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| 引用本文： | 陈瑞炎.刚竹属5种竹类植物叶片N、P含量及内吸收率[J].福建林学院学报,2011,31(1). |
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| 作者姓名： | 陈瑞炎 |
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| 作者单位： | 永安市林业科技推广中心,福建,永安,366000 |
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| 基金项目： | 福建省林业厅科技重点基金 |
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| 摘 要： | 对刚竹属的5种竹类植物(紫竹、绿槽毛竹、毛金竹、早竹和淡竹)成熟叶和衰老叶的N、P含量及内吸收率进行了研究。结果表明,刚竹属的5种竹类植物成熟叶具有较高的N含量(18.46±0.40)-(25.84±0.86)mg.g-1)],成熟叶的P含量在(1.08±0.02)-(1.26±0.02)mg.g-1之间;从成熟叶到衰老叶,N、P含量呈现下降的趋势;5种竹类植物叶片N、P的内吸收率均在50%以上;N的内吸收率与成熟叶片的N浓度呈显著正相关,P不存在这种关系。
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| 关 键 词： | 刚竹属 叶 N P 内吸收率 |
Leaf N and P concentrations,and nutrient resorption efficiencies for 5 Phyllostachys bamboo species |
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| CHEN Rui-yan.Leaf N and P concentrations,and nutrient resorption efficiencies for 5 Phyllostachys bamboo species[J].Journal of Fujian College of Forestry,2011,31(1). |
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| Authors: | CHEN Rui-yan |
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| Abstract: | To investigate how bamboos adapt to nutrient-poor environments,nitrogen and phosphorus concentrations,and nutrient resorption efficiency of leaves during senescence for 5 Phyllostachys bamboo species(Phyllostachys nigra,Ph.heterocycla cv.viridisulcata,Ph.nigra var.henonis,Ph.praecox,Ph.glauca)were studied.The results showed as follows:(1) Mature leaves of 5 Phyllostachys bamboo species had the relatively high N concentration (18.46±0.40)-(25.84±0.86) mg·g-1)];P concentration of mature leaves ranged from 1.08±0.02 to 1.26±0.02 mg·g-1,respectively;N and P concentrations decreased with leaf senescence.(2) Resorption efficiency of N or P was above 50%.(3) There was significant correlation between nitrogen resorption efficiency and N concentrations in the mature leaves of 5 Phyllostachys bamboo species,no significant relationship was found between phosphorus resorption efficiency and P concentrations in the mature leaves of 5 Phyllostachys bamboo species. |
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| Keywords: | N P |
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