阔叶箬竹分株繁殖和埋鞭繁殖技术优化

为有效扩大阔叶箬竹种群数量和栽培范围，对阔叶箬竹繁殖方法进行了研究。测量了分株繁殖和埋鞭繁殖2种方法下的生长指标变化并比较分析了2种繁殖方式。结果表明，采用分株方法繁殖时，秆数对阔叶箬竹的成活率、新竹高度、叶片数、叶长、叶宽和出笋数都有显著性影响。采用3秆·丛^-1的分株繁殖方式相比1秆·丛^-1和5秆·丛^-1成活率更高，植株生长状况更好。采用埋鞭方法繁殖时，鞭长对阔叶箬竹的成活率和新竹高度有显著性影响，而对其叶片数、叶长、叶宽以及出笋数没有显著性影响。采用10 cm鞭段长度的埋鞭繁殖方式相比5 cm和20 cm鞭段长度成活率更高，植株生长状况更好。相同养护条件下，埋鞭繁殖成活率稍高于分株繁殖，而分株繁殖的竹苗比埋鞭繁殖的株高更高并且出笋数也更多。这些数据可为今后阔叶箬竹的产业化生产提供重要的基础依据。

Technical Optimization of Tillering & Laying-rhizome Propagation of Indocalamus latifolius

The improvement of Indocalamus latifolius regeneration is beneficial for the ecological population and artificial cultivation of I.latifolius.We compared and analyzed two different regeneration ways of I.latifolius,namely tillering and laying-rhizome propagation.The results demonstrated that the tiller number of the tuft significantly influenced the survival rate,height,leaf number,leaf length and width and new tiller number.Three tillers/tufts showed higher survival rate and better growth indexes compared to one tiller/tuft and five tillers/tufts.The length of rhizome for laying-regeneration observably effected the survival rate and plant height.Ten centimeters laying-rhizome showed higher survival rate and better growth indexes than 5 cm and 20 cm.In the same growth conditions,laying-rhizome regeneration showed higher survival rate than tiller regeneration.While the new tiller number and plant height were better in tiller regeneration.The results would pave a way for the industrial reproduction of I.latifolius.