Guadua amplexifolia 种苗扩繁技术初探

以引进竹种Guadua amplexifolia为对象，进行了种苗林竹丛结构调控、全年连续育苗和主枝、次生枝扦插育苗试验，结果表明：种苗林竹丛结构调控对提高新竹质量有显著作用，处理较对照新竹径级增大51．5％，立竹全高增加30．9％；全年3次移栽育苗成活率均达87％以上，其中以5月份移栽效果好，成竹率达45．7％；1年生、2年生立竹主枝、次生枝扦插成活率68％以上，各处理生根时间无显著差异，平均为47d，综合扦插成活率、出笋成竹数、新竹地径等，以2年生立竹主枝扦插效果最佳。

A Study on Seedling Propagation Technique of Guadua amplexifolia

Experiments were made to study on bamboo clump structure ad-justment in seedling stands, continuous nursery all round the year, bough and sub-branch cutting propagation of Guadua amplexifolia introduced from Colombia. The results indicated that bamboo clump structure ad-justment in seedling stands evidently promoted new bamboo quality. Ground diameter of treatment increased 51. 5% than that of CK,and height of bamboo increased 30. 9%. Survival rates of transplants in all three times of the year reached over 87%. The effect of transplant in May was the best,ratio of maturity reached 45.7%. Ratio of woody cutting using the bough and sub-branch from 1-year and 2-year bamboo reached more than 68%. There were no evidently differences in rooting time among all treatments,averaged 47 d. In sum,the boughs from 2-year bamboo were the best materials to cutting propagation.