Propagation techniques on root turion sprout browse of Populus davidiana Dode  

山杨根蘖萌生嫩枝扦插繁殖技术(英文)

作　　者：邢亚娟 王庆贵 王延河 

机构地区：[1]黑龙江省林业科学研究所,哈尔滨150040 [2]黑龙江省国家农业标准化检测研究中心 [3]黑龙江省伊春市翠峦林业局,伊春市153013

出　　处：《Journal of Forestry Research》2001年第2期143-145,148,共3页林业研究（英文版）

摘　　要：The root segments selected from dominant trees of Populus davidiana Dode were taken as reproductive material and were buried in different depths to carry out the reproduction of root turion sprout. The affecting factors of germination rate, survival rate, and height growth for cutting wood of root sprout were comparatively analyzed. The results showed that the best suitable substrate for burying root is pearlite, with a germination rate of 15.16%. 3-4-cm root segments has the highest rate of germination (12.4%). The mixture of sand and soil (2:1) is the best cutting substrate, with a survival rate of 81.3%, while as to height growth of cutting wood, the mixture of turfy and soil (1:1) is the best. The cutting woods selected from different positions of stem show difference in height growth. The cutting wood from top stem is higher obviously than those from middle or low stem.以山杨优树的根段为繁殖材料进行分层埋根处理，将其根蘖萌生嫩枝扦插繁殖，对影响山杨根蘖萌生嫩枝扦插的因子如发芽率、存活率及高生长进行比较分析。结果表明，最佳埋根基质是珍珠岩，嫩枝萌生率为15.6%；根段直径3-4 cm，嫩枝萌生率高，为12.4%；最佳扦插基质为沙土与土比例为2：1的基质，扦插成活率81.3%，草炭与土比例为1：1的基质对扦插苗高生长效果最好；来源于树干不同位置的扦插苗在高生长上显示出显著差异，嫩枝顶端明显高于中部和下部。

关 键 词：Populus davidiana Dode Root turion CUTTING 

分 类 号：S792.114.05[农业科学—林木遗传育种]