| 山杏幼苗水分生理生态特性及凋萎湿度的研究 |
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| 引用本文： | 李雪华,蒋德明,刘志民.山杏幼苗水分生理生态特性及凋萎湿度的研究[J].干旱区资源与环境,2004,18(5):168-171. |
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| 作者姓名： | 李雪华 蒋德明 刘志民 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳,110016;中国科学院研究生院,北京,100039
2. 中国科学院沈阳应用生态研究所,沈阳,110016 |
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| 基金项目： | 中国科学院沈阳应用生态研究所创新资助项目 ( SCXD0 10 2 -0 2 ) |
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| 摘 要： | 对山杏幼苗进行 3种施水量的水分培养和干旱处理。结果表明 :随施水量的减少 ,叶片的净光合速率、蒸腾速率、气孔导度和水分利用效率等指标都随之下降 ,叶片温度提高。 40 9.2和 1 89.2 mm施水量对山杏幼苗各项指标的影响呈显著差异 ,而 40 9.2和 32 1 .2 mm之间与 32 1 .2和 1 89.2 mm之间均无差异。随土壤干旱的加剧 ,山杏幼苗叶片的蒸腾速率和水势与土壤含水量呈规律性变化 ;当干旱持续 39天时 ,1 .44%的土壤含水量可视为山杏幼苗的凋萎湿度
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| 关 键 词： | 山杏 水分生理生态 抗旱性 凋萎湿度 |
| 文章编号： | 1003-7578(2004)05-168-04 |
| 修稿时间： | 2003年10月9日 |
A Study on Hydrophysiological Characteristics and Withered Moisutre of Prunus ansu |
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| LI Xue-hua , JIANG De-ming LIU Zhi-min.A Study on Hydrophysiological Characteristics and Withered Moisutre of Prunus ansu[J].Journal of Arid Land Resources and Environment,2004,18(5):168-171. |
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| Authors: | LI Xue-hua JIANG De-ming LIU Zhi-min |
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| Institution: | LI Xue-hua 1,2 JIANG De-ming 1 LIU Zhi-min 1 |
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| Abstract: | The seedlings of Prunus ansu were treated with different irrigation levels and drought treatments. The results showed: with the decreasing of water content, photosynthetic rate, transpiration rate, stomatal conductance and water utilization ratio decreased, leaf temperature increased. Irrigation levels of 409.2mm and189.2mm had obvious variable effect on the seedlings, the effect of 409.2mm - 321.2mm and 321.2mm - 189.2mm on the seedlings were not obvious. The mechanism of drought- resistance of the seedlings was consuming water. With aggravation of the soil arid, transpiration rate and leaf water potential varied regularly ; when soil arid lasting 39d, withered moisture of the seedlings of Prunus ansu was 1.44%. |
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| Keywords: | Prunus ansu hydrophysiology drought-resistance withered moisture |
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