| 杉木、马尾松裸根苗水分关系研究 |
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| 引用本文： | 喻方圆,郭新保,徐锡增. 杉木、马尾松裸根苗水分关系研究[J]. 林业研究, 2003, 14(1): 51-55. DOI: 10.1007/BF02856762 |
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| 作者姓名： | 喻方圆 郭新保 徐锡增 |
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| 作者单位： | 南京林业大学森林资源与环境学院,南京210037,中国;南京林业大学森林资源与环境学院,南京210037,中国;南京林业大学森林资源与环境学院,南京210037,中国 |
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| 基金项目： | This research was supported by the Sciences Research Foundation of Nanjing Forestry University. |
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| 摘 要： | Water relation parameters of bare-root seedlings of Chinese fir (Cunninghamia lanceolata Hook.)and Masson pine (Pinus massoniana Lamb.)were measured and changes of root growth potential as well as field survival rate of both species were studied after the bare-root seedlings were exposed in a sunny field condition.the results showed that masson pine had a lower osmotic potential(-2.07Mpa) at turgor loss point and at full turgor(-1.29Mpa),compared with Chinese fir(-1.80Mpa and -1.08Mpa respectively).The parameter Vp/Vo(63.27%) of Masson pine was higher than that of chinese fir (58.03%).This means that Masson pine has a stronger ability to tolerate desiccation,compared to Chinese fir according to analysis of above water relation parameters.Root growth potential and field survival rate decreased with prolonging duration of exposure.The field survival rate of both species was reduced to less than 40% after the seedling being exposed only two hours.Water potentials of -1.60 Mpa and -1.70 Mpa were suggested to be critical values for Chinese fir and Masson pine respectively in successful reforestation.
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| 关 键 词： | 杉木 马尾松 水分关系 根生长势 |
| 收稿时间： | 2002-10-22 |
Water status of bare-root seedlings of Chinese fir and Masson pine |
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| Yu Fang-yuan,Guo Xin-bao,Xu Xi-zeng. Water status of bare-root seedlings of Chinese fir and Masson pine[J]. Journal of Forestry Research, 2003, 14(1): 51-55. DOI: 10.1007/BF02856762 |
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| Authors: | Yu Fang-yuan Guo Xin-bao Xu Xi-zeng |
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| Affiliation: | (1) College of Forest Resources and Environment, Nanjing Forestry University, 210037 Nanjing, P. R. China |
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| Abstract: | Water relation parameters of bare-root seedlings of Chinese fir (Cunninghamia lanceolata Hook.) and Masson pine (Pinus massoniana Lamb.) were measured and changes of root growth potential as well as field survival rate of both species were studied after the bare-root seedlings were exposed in a sunny field condition. The results showed that Masson pine had a lower osmotic potential (-2.07Mpa) at turgor loss point and at full turgor (-1.29Mpa), compared with Chinese fir (-1.80Mpa and -1.08Mpa respectively). The parameter Vp/V0 (63.27%) of Masson pine was higher than that of Chinese fir (58.03%). This means that Masson pine has a stronger ability to tolerate desiccation, compared to Chinese fir according to analysis of above water relation parameters. Root growth potential and field survival rate decreased with prolonging duration of exposure. The field survival rate of both species was reduced to less than 40% after the seedling being exposed only two hours. Water poten-tials of 1.60 Mpa and -1.70 Mpa were suggested to be critical values for Chinese fir and Masson pine respectively in successful reforestation. |
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| Keywords: | Chinese fir Masson pine Water relations Seedling desiccation Water potential Root growth potential |
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