杜鹃花叶片N/P·LMA与生态适应性关系的初步研究 |
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引用本文: | 蔡艳,张毅,吴清华,吴德勇.杜鹃花叶片N/P·LMA与生态适应性关系的初步研究[J].安徽农业科学,2008,36(30). |
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作者姓名: | 蔡艳 张毅 吴清华 吴德勇 |
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作者单位: | 四川农业大学资源环境学院,四川雅安,625014;四川农业大学资源环境学院,四川雅安,625014;四川农业大学资源环境学院,四川雅安,625014;四川农业大学资源环境学院,四川雅安,625014 |
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摘 要: | 通过对龙池杜鹃属的31个种32个样品的研究发现,杜鹃叶片氮含量为1.1097%(大白杜鹃)~2.1412%(紫花杜鹃),磷含量为0.0910%(露珠杜鹃)~0.1693%(美容杜鹃),N/P为8.0958(云锦杜鹃)~17.9160(云南杜鹃),LMA为0.0716 mg/mm2(云南杜鹃)~0.2339 mg/mm2(云锦杜鹃)。N/P与LMA呈现显著的负相关(R2=0.5764,P<0.01),表明杜鹃叶片越厚,叶片N/P越低,植物相对生长速率越快,对生态环境适应性越强。
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关 键 词: | 杜鹃 N/P LMA 相对生长速率 生态适应性 |
Preliminary Study on Relationship between N/P,LMA and Ecological Adaptability of Rhododendron Species |
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Abstract: | Based on study of the leaf mass per area(LMA) and N/P of 31 Rhododendron species in the Longchi Botany Garden,the results showed that the N contents ranged from 1.109 7% to 2.141 2%,and the P contents ranged from 0.091 0% to 0.169 3%,and the N/P ranged from 8.095 8 to 17.916 0,and the LMA changed from 0.071 6 mg/mm2 to 0.233 9 mg/mm2.LMA had evidently negative relativity to N/P(R2=0.576 4,P<0.01),which showed that the thicker Rhododendron leaf and lower N/P were,the sooner plant relative growth rate was and the stronger adaptability to the ecological environment was. |
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Keywords: | N/P LMA |
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