干旱区研究

干旱区研究 ›› 2014, Vol. 31 ›› Issue (4): 744-749.

• 植物与植物生理 • 上一篇    下一篇

土壤掩埋对辽东栎幼苗出土和生长的影响

  

  1. (1.西北农林科技大学林学院，西部环境与生态教育部重点实验室，陕西 杨凌 712100； 2.韩城市水土保持工作站，陕西 韩城 715400)
  • 收稿日期:2013-12-31 修回日期:2014-01-14 出版日期:2014-07-15 发布日期:2014-08-11
  • 作者简介:王娟婷（1987- ）, 女, 硕士在读, 主要从事干旱区森林培育的理论和技术研究.Email: Wang_Juan_ting@126.com
  • 基金资助:

    西北农林科技大学基本科研业务专项资金项目（ZDXM2012-10）; 国家科技部“十二五”科技支撑计划项目（2012BAD22B030203）

Effects of Soil covering Thickness on Emergence Rate and Seedling Growth of Quercus wutaishanica

  • Received:2013-12-31 Revised:2014-01-14 Online:2014-07-15 Published:2014-08-11

PDF (PC)

971

赞

被引次数

1

摘要： 以黄土高原天然次生林辽东栎（Quercus wutaishanica）种子为对象，采用双因素（覆土厚度和播种时间）完全随机试验的方法，研究土壤掩埋对辽东栎幼苗出土和生长的影响。结果表明：① 覆土厚度对辽东栎种子的出苗率有显著影响(P<0.05)，出苗率随着覆土厚度的增加而增加，覆土厚度为10 cm时，出苗率达到最大值，分别为（53.2±20.7）%和（42.0±0.7）%；覆土厚度对幼苗的生长影响不显著。② 播种时间对0~3 cm覆土播种的出苗率影响显著(P<0.05)，由于温度的差异，11月1日播种的种子出苗率高于12月10日，出苗率分别为（11.9±1.2）%~（53.2±20.7）%和（1.5±0.8）%~（42.0±0.7）%；播种时间对覆土播种的幼苗生长无显著影响，对地表播种的幼苗叶面积影响显著（P<0.05）。可见，土壤掩埋有利于辽东栎幼苗的出土，土壤掩埋对幼苗的生长影响不大。

Abstract: In this study, the effects of soilcovering thickness and sowing time on the emergence rate and seedling growth of [WTBX]Quercus wutaishanica,[WTBZ] a kind of natural secondary forest on the Loess Plateau, were researched. The results were as follows: ① Soilcovering thickness affected significantly the emergence rate [WTBX](P<0.05),[WTBZ] the emergence rate was increased with the increase of soilcovering thickness and reached its maximum value when the soilcovering thickness was increased to 10 cm. The effect of soilcovering thickness on the seedling growth was not significant; ② The effect of sowing time on the emergence rate was significant when the soilcovering thickness was 0-3 cm [WTBX](P<0.05).[WTBZ] The emergence rate that the sowing time was on November 1 was higher than that on December 10 because of the temperature difference, and the emergence rates that the sowing time was on these two days were (11.9±1.2)%-(53.2±20.7)% and (1.5 %±0.8)%-(42.0±0.7)% respectively; the effect of sowing time on the seedling growth was not significant but the leaf area [WTBX](P<0.05).[WTBZ] Therefore, it could be concluded that soilcovering was advantageous for improving the emergence rate of [WTBX]Q. wutaishanica,[WTBZ] but its effect on the seedling growth was not significant.