| 兴安落叶松苗木失水规律和苗木活力的测定 |
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| 引用本文： | 臧世臣,宋桂波,李长林.兴安落叶松苗木失水规律和苗木活力的测定[J].林业科技,2004,29(3):5-7. |
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| 作者姓名： | 臧世臣 宋桂波 李长林 |
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| 作者单位： | 黑龙江省朗乡林业局,朗乡,150801 |
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| 摘 要： | 以兴安落叶松S1-1苗木为材料，研究苗木失水规律。苗木活力与其体内的水分状况密切相关，苗木裸根后迅速蒸腾失水，开始失水较快，以后逐渐减慢，温度越高，相对湿度越低，风速越大，苗木蒸腾失水速度越快；苗木失水首先使根系的水势下降，最终导致造林成活率和生长量的降低。兴安落叶松对其苗木水分要求较敏感，其健康苗木水势为-5bar，造林成活水势为-15bar。
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| 关 键 词： | 兴安落叶松 苗木 失水规律 活力 造林 |
| 文章编号： | 1001-9499(2004)03-0005-03 |
| 修稿时间： | 2003年12月2日 |
Study on the Testing Technique of Seedlings Vigor of Larix gemelini |
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| ZANG Shichen.Study on the Testing Technique of Seedlings Vigor of Larix gemelini[J].Forestry Science & Technology,2004,29(3):5-7. |
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| Authors: | ZANG Shichen |
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| Abstract: | The regulation of lost water from seedlings are studied with seedlings S 1-1 of Larix geme-lini.The critical value of water potential is confirmed by tree planting test.Results show that then seedlings vigor is close correlation to their water status. Seedlings regulation of lost water with transpiration is fast beginning, then slow until balance with air water. The transpiration rate of seedlings roots is related to air temperature, relative humidity and wind under local air condition.The lost water of seedlings first make decline, then make the survive rate of plantation and growth of tree fall.The value of water potential of normal seedlings from Larix gemelini is - 5 bar and the critical value of water potential for its survive is - 15 bar. |
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| Keywords: | Larix gemelini Seedlings vigor Water potential |
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