| 生境光强对云南金钱槭幼苗生长及光合速率的影响 |
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| 引用本文： | 张光飞,欧阳志勤,苏文华.生境光强对云南金钱槭幼苗生长及光合速率的影响[J].湖北农业科学,2009,48(11). |
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| 作者姓名： | 张光飞 欧阳志勤 苏文华 |
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| 作者单位： | 1. 云南大学生态学与地植物学研究所,昆明,650091
2. 云南省环境科学研究院,昆明,650032 |
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| 基金项目： | 教育部高等理工教育教学改革与实践项目，云南省自然科学基金项目 |
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| 摘 要： | 在不同生境光强,即100%自然全光照(Natural sunlight,NS)、80%NS、25%NS、5%NS的人工遮阴条件下,研究了生境光强对云南金钱槭(Dipteronia ayeria Henry)幼苗生长及光合速率的影响.结果表明,光照是影响幼苗生长的重要环境因子.株高、基径、生物量和光速速率均以5%NS处理的最小,基径、生物量和光合速率随着遮阴程度的增加而减小.80%NS的处理对云南金钱槭幼苗的生长最有利,幼苗的株高、基径、生物量和光合速率均在80%NS处理下获得了最大增长,说明适当遮阴(80%NS)有利于云南金钱槭幼苗的生长.
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| 关 键 词： | 云南金钱槭 生境光强 遮阴处理 幼苗生长 光合速率 |
Effects of Environment Light Intensity on the Photosynthesis Rate and Growth of Dipteronia dyeriana Seedlings |
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| ZHANG Guang-fei,OUYANG Zhi-qin,SU Wen-hua.Effects of Environment Light Intensity on the Photosynthesis Rate and Growth of Dipteronia dyeriana Seedlings[J].Hubei Agricultural Sciences,2009,48(11). |
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| Authors: | ZHANG Guang-fei OUYANG Zhi-qin SU Wen-hua |
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| Abstract: | Under different light intensities such as 100% natural sunlight (NS),80% NS,25% NS,5% NS in shade house,effects of light intensity on the photosynthesis rate and growth of Dipteronia dyeriana seedlings were studied.The preliminary results were as follows: Light was an important environmental factor for the growth of D. dyeriana seedlings.The plant height,branch diameter, total biomass and photosynthesis rate were the smallest under 5% NS. Light intensity was positively corre-lated to branch diameter, total biomass and photosynthesis rate of D. dyeriana seedlings. The treatmant of 80% NS was most suited for established seedlings in plant height, branch diameter, total biomass and photosynthesis rate. Appropriate shade of 80% NS was beneficial to D. dyeriana seedling growth. |
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| Keywords: | Dipteronia dyeriana Henry environment light intensity shading treatment seedling growth photosynthesis rate |
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