摘要
采用三维坐标体系追根挖掘法对晋西黄土高原半阴坡虎榛子、黄刺玫和三裂绣线菊3种灌木根构型进行了研究。研究结果表明，3种灌木根系水平分布范围较广，垂直分布范围较窄，虎榛子主要集中分布在0～60cm土层中，黄刺玫集中分布在0～40cm土层中，根系空间构型表明虎榛子和黄剌玫以水平根和斜生根为主，无明显主根，7a生三裂绣线菊根系错综复杂，根系中有一定数量的2～3级分枝根，表现出了较其他两种灌木较强的适应性。
The method of 3-dimensional coordinate excavation of total root system is explored to probe into the root systems of Ostryopsis davidiana, Rosa xanthina and Spiraea trilobata in the Loess Plateau of western Shanxi. The result shows that these three species of shrubbery have a wide horizontal range and a narrow verti- cal range of root system. The roots of Ostryopsis davidiana are mainly concentrated in 0-60 cm soil profile and those of Rosa xanthina are in 0- 40 cm. In the aspect of root architecture characteristics, the roots of Ostryopsis davidiana and Rosa xanthina are mainly lateral and diagonal ones and there are very few taproots. Spiraea trilobata of 7 years old has a complex root system and has a lot of second and third branch roots and shows a strong adaptability.
出处
《干旱地区农业研究》
CSCD
北大核心
2006年第5期146-150,共5页
Agricultural Research in the Arid Areas
基金
国家973项目(2002CB111503)
2004年北京林业大学研究生自选课题基金项目(04SB001)
关键词
虎榛子
黄刺玫
三裂绣线菊
根构型
黄土高原
Ostryopsis davidiana
Rosa xanthina
Spiraea triobata
root architecture characteristics
Loess Plateau
