摘要
以丽豆与紫穗槐为材料,研究不同起苗方法、不同主根长度时进行断根处理对苗木根系、生长量及造林成活率的影响。结果表明,经断根处理后丽豆和紫穗槐的侧根数和须根数均高于对照;在主根10 cm长时进行断根,丽豆和紫穗槐当年苗木死亡率最低,分别为12.1%,10.7%.经断根处理栽植2 a后,丽豆苗高生长量平均为26.4 cm,紫穗槐苗高生长量平均为23.7 cm,均高于对照;主根10 cm长时进行断根,栽植后苗高生长量最大。采用方法 1进行起苗,苗木栽植成活率为88.4%,较以前常用的起苗方法的成活率提高38.3%.
Calophaca sinica and Amorpha fruticose as materials,influence of lifting method and root-excision of tap root length in different stage on root system,growth and survival rate were studied. The results showed that lateral root number and fibril number of both species were higher than the contrast after treatment; root-excision in 10 cm of tap root length,mortality rate of tow species was the lowest in current year with 12. 1% and 10. 7%; seedling height growth of Calophaca sinica was 26. 4 cm and that of Amorpha fruticose was 23. 7 cm,both higher than the contrast after planting with root-excision; by new lifting method,survival rate of seedling was 88. 4%,which improved 38. 3% than the traditional lifting method.
出处
《山西林业科技》
2016年第1期23-25,共3页
Shanxi Forestry Science and Technology
关键词
丽豆
紫穗槐
断根处理
生长量
成活率
Calophaca sinica
Amorpha fruticose
Root-excision
Growth
Survival rate
