欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (17): 137-140.

• 林学 园艺 园林 • 上一篇    下一篇

不同环境因子对柠条种子萌发影响的试验研究

贺小秀 王勇   

  • 收稿日期:2010-01-19 修回日期:2010-03-11 出版日期:2010-09-05 发布日期:2010-09-05

Influence of Different Environmental Factors on Bourgeoning Condition of Seed of Caragana korshinskill

  • Received:2010-01-19 Revised:2010-03-11 Online:2010-09-05 Published:2010-09-05

PDF (PC)

1102

摘要：

柠条（Caragana korshinskill Kom.）是干旱半干旱地区保持水土、改善生态环境主要先锋树种。本文通过对种子萌发机理的研究，为柠条林幼苗更新提供理论依据。研究发现柠条种子在恒温条件下25℃时发芽率最高，可以达到70.25％，变温条件下的发芽率要高于恒温条件下的发芽率。光照对柠条种子萌发的影响不是很明显，柠条种子在土壤含水量8％～14％范围内均可以萌发，土壤含水量在14％左右为柠条种子最适宜的萌发湿度。覆盖土层厚度对发芽率有较大影响，土壤表层发芽率为10％，0～1cm土层发芽率可以提高至77.8％。结果表明：在人工播种柠条种子时的适宜覆土厚度为1cm～3cm，不覆土或覆土太厚均不利于柠条种子萌发。

关键词: 林业, 林业, 投资环境, 因子分析, 评价

Abstract:

Abstract: To soil and water conservation, Caragana (Caragana korshinskill Kom.) can improve the local ecological environment has played an important role in this paper start from seed germination to explore the mechanism of Caragana forest seedling regeneration. The highest germination rate 70.25% reached at 25℃, among the conditions of constant temperature. Light on seed germination of Caragana is not very clear, Caragana seeds in the soil moisture content of 8% ~ 14% of qualifications, can germinate when the soil moisture content of 14% of the most appropriate Caragana seed germination. Cover soil thickness on the germination rate has a great impact on the soil surface germination rate of 10% in the germination rate of 1cm soil layer can be increased to 77.8%, which shows when the artificial sow seeds of Caragana Futuhoudu to 1cm ~ 3cm is appropriate, and not too thick overburden casing is not conducive to seed germination of Caragana.