沙埋对六种沙生植物种子萌发和幼苗生长的影响

摘要/Abstract

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。

关键词: 沙埋, 种子萌发, 休眠, 沙生植物

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.

Key words: sand-burying, seed germination, dormant, psammophyte

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.

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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