title: [Effects of sand-burying on seed germination and seedling emergence of six psammophytes species].
abstract: This paper studied the effects of sand-burying on the seed germination and seedling emergence of six dominance plants in Keerqin Sandy Land. Six treatments of artificially sand-burying to depths 0, 2, 4, 6, 8, 10 and 12 cm were designed. The results showed that the seed germination of Agriophyllum squarrosum was significantly different (P < 0.05) between different treatments, but that of Artemesia halodendron was only significantly different (P< 0.05) between 2 cm and other burial depths. For other four plants, their seed germination was significantly different (P < 0.05) only between 0 cm and other burial depths. Sand-burying significantly affected the seedling emergence of all plant species. The emergence rate decreased with increasing burial depth. Higher emergence percentages were obtained at 2 and 4 cm burial depths. The species with larger seeds emerged from deeper depth, and the maximum burial depth of seedling emergence was Sophora flavescdens > Atraphaxis manshurica > or = Agriophyllum squarrosum > Hedysarum fruticosum > Bassia dasyphylla > Artemesia halodendron.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
authors.forename: Rongping
authors.initials: R
authors.lastname: Li
authors.forename: Deming
authors.initials: D
authors.lastname: Jiang
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Liu
authors.forename: Xuehua
authors.initials: X
authors.lastname: Li
authors.forename: Xiaolan
authors.initials: X
authors.lastname: Li
authors.forename: Qiaoling
authors.initials: Q
authors.lastname: Yan
mesh_terms: D019663:Chenopodiaceae / Q000502:physiology; D003889:Desert Climate; D018525:Germination / Q000502:physiology*; D018521:Plant Physiological Phenomena; D036226:Seedlings / Q000502:physiology*; D012639:Seeds / Q000502:physiology*; D012822:Silicon Dioxide; D029909:Sophora / Q000502:physiology*
chemical_list: D012822:Silicon Dioxide