【摘要】 本试验对新西伯利亚黑杨嫩枝扦插与营养基质、插穗剪取部位以及不同插穗处理等关系进行了研究。结果表明,以蛭石土为扦插基质成活率较高,生长量最大;扦插成活率与插穗是否带叶片关系不大;扦插成活率基本不受插穗剪取部位的影响,即使是木质化程度非常低的嫩枝梢头也可作为扦插材料;利用2个营养杯叠加的方法,可使产苗量增加近2倍,大大加快扦插繁育速度。更多还原

【Abstract】 Relationship among softwood cutting,nutrition medium,cutting places in the trees,different cuttings of Populus nigra×Populus pyramidalis were studied.Result shows that the survival rate is more higher and the growth is the biggest by taking vermiculite soil as cutting medium;cutting survival rate has little relation with cuttings;cutting survival rate are not affected by the cutting places in the tree even if the top of the tender shoots which have very low lignified degree can be as cutting material;yield can be increased by a factor of three and velocity of cutting breeding can be increased greatly by using superposition method with 2 nutritive cups.更多还原