| 土壤水分胁迫对槟榔幼苗光合特性的影响 |
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| 引用本文： | 陈 歆,杨福孙,周兆德,符常明. 土壤水分胁迫对槟榔幼苗光合特性的影响[J]. 热带作物学报, 2010, 30(2): 8-12 |
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| 作者姓名： | 陈 歆 杨福孙 周兆德 符常明 |
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| 作者单位： | 海南大学环境与植物保护学院 海南儋州 571737;海南大学农学院 海南儋州 571737;海南大学农学院 海南儋州 571737;海南大学农学院 海南儋州 571737 |
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| 摘 要： | 以海南长蒂槟榔种为材料，采用盆栽试验，通过控制土壤含水量，研究不同水分胁迫对槟榔幼苗光合特性的影响。结果表明：随着土壤水分胁迫的加剧，槟榔幼苗的净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gond)下降，胞间CO2浓度(Ci)升高，干旱降低槟榔的净光合作用，限制气体交换。槟榔幼苗的水分利用效率和土壤水分含量成负相关，即水分胁迫程度越深，叶片的水分利用效率越高。
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| 关 键 词： | 槟榔 ；土壤水分胁迫 ；光合特性 ；水分利用效率 |
Effect of Different Moisture Treatments on Photosynthetic Characteristics of Areca catechu Seedlings |
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| Affiliation: | Environment and Plant Protection College, Hainan University, Dnazhou, Hainan 571737;College of Agronomy, Hainan University, Dnazhou, Hainan 571737;College of Agronomy, Hainan University, Dnazhou, Hainan 571737;College of Agronomy, Hainan University, Dnazhou, Hainan 571737 |
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| Abstract: | Arecanut seedlings were used as experimental material to study the effect of different moisture treatments on photosynthetic characteristics by controlled irrigation. The results showed that along with the severity water stress, the photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (cond) reduced, CO2 concentrations inside cells increased. So arecanut seedings can endure and adapt to drought stresses under conditions of lower soil water content. The water use efficiency (WUE) and soil moisture had negative correlation. |
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| Keywords: | arecanut water stress photosynthetic characteristics water use efficiency |
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