摘要
笔者以1年生丽豆幼苗为试材,研究断根处理对其生长及根系的影响。结果表明,断根处理后丽豆幼苗树高、地径生长量分别比未断根苗增加了14%,71%;断根处理后幼苗根系鲜重与根系干重分别比未断根苗增加了33%和36%,主根长比未断根苗降低了73%;断根处理后在0 cm^30 cm土层中,一级侧根数和须根数分别是未断根苗的2.00倍和1.55倍。因此,通过断根处理,丽豆幼苗侧根、须根显著增多,地径显著增粗,极大地提高了造林成活率,为丽豆种群的保护和开发利用奠定基础。
Taking 1 year old Calophaca sinica as material, influence of root cutting on growth and root of Calophace sinica was studied.Results showed that after the root cutting treatment on Calophaca sinica, seedling tree height and ground diameter growth increased by 14%and 71%compared to no root cutting seedlings;seedling root fresh weight and root dry weight , respectively compared to no root cutting seedlings increased by 33%and 36%;compared to no root cutting seedling main root length de-creased 73%;in 0 cm～30 cm soil, first lateral roots amount and fibril amount were 2.00 and 1.55 times compared to no root cutting.Therefore, after root cutting, Calophaca sinica lateral roots and fibril amounts significantly increased thicker diameter , so it could greatly improve the survival rate of afforestation to make basis for protect and application of Calophaca sinica.
出处
《山西林业科技》
2015年第2期20-22,共3页
Shanxi Forestry Science and Technology
基金
山西省青年科技研究基金(2013021023-2)
乡土灌木丽豆的繁育与造林技术成果转化
关键词
丽豆
断根
生长量
根系形态指标
Calophaca sinica
Root cutting
Amount of growth
Root morphology index
