摘要
分别对6种植物的种子进行0cm、0.5cm、1cm、2cm、3cm、4cm、6cm、8cm、12cm九个深度的沙埋处理。结果表明:①对于所有的植物种子,0cm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。
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.
出处
《中国沙漠》
CSCD
北大核心
2007年第6期968-971,共4页
Journal of Desert Research
基金
国家自然科学基金项目(40471006
40671011)资助
关键词
沙埋
种子萌发
休眠
沙生植物
sand-burying
seed germination
dormant
psammophyte
作者简介
苏延桂（1980-），女，甘肃兰州人，博士研究生。主要从事荒漠恢复生态学研究。E-mail：guiruian@163．com
