| 沙埋对六种沙生植物种子萌发和幼苗生长的影响 |
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| 引用本文： | 苏延桂,李新荣,贾荣亮,冯丽.沙埋对六种沙生植物种子萌发和幼苗生长的影响[J].中国沙漠,2007,27(6):968-971. |
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| 作者姓名： | 苏延桂 李新荣 贾荣亮 冯丽 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所,沙坡头沙漠研究试验站,甘肃,兰州,730000 |
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| 摘 要： | 分别对6种植物的种子进行0 cm、0.5 cm、1 cm、2 cm、3 cm、4 cm、6 cm、8 cm、12 cm 九个深度的沙埋处理。结果表明：①对于所有的植物种子，0 cm沙埋较浅层沙埋有较低的出苗率；②沙埋对所有植物种子的幼苗出土均有显著的影响(P<0.05)，随着埋沙深度的增加，植物幼苗的出土均显著的下降；③植物种子幼苗出土的最大深度与繁殖体的大小呈现显著的正相关性，繁殖体大的植物种能从更深的沙层中出苗。
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| 关 键 词： | 沙埋 种子萌发 休眠 沙生植物 |
| 文章编号： | 1000-694X（2007）06-0968-04 |
| 收稿时间： | 2006-06-30 |
| 修稿时间： | 2006-08-15 |
Effects of Sand-burying on Seed Germination and Seedling Emergence of Six Psammophytes Species |
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| SU Yan-gui,LI Xin-rong,JIA Rong-liang,FENG Li.Effects of Sand-burying on Seed Germination and Seedling Emergence of Six Psammophytes Species[J].Journal of Desert Research,2007,27(6):968-971. |
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| Authors: | SU Yan-gui LI Xin-rong JIA Rong-liang FENG Li |
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| Institution: | Shapotou Desert Research and Experiment Station,Cold and Arid Regions and Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China |
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| Abstract: | This paper studied the effect of sand-burying on the seed germination and seedling emergence of six psammophyte plants wildly spreading in the Tengger Desert. Nine treatments of artificially sand-burying at depths of 0, 0.5, 1, 2, 3, 4, 6, 8, 12 cm were designed. The results indicated that ①seeds at 0 cm depth had lower germination; ②sand-burying had significant effect for all seeds(p<0.05), with the increase of depth, the seedling emergence decreased; ③the depth at which the seed emerge were positively correlated with the weight of seeds. |
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| Keywords: | sand-burying seed germination dormant psammophyte |
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