【摘要】 使用不同浓度生根促进剂处理不同种源西南桦插穗 ,研究了不同木质化程度穗条的扦插效果、不同基质对西南桦扦插繁殖生根效果的影响 ,以及不同种源西南桦的扦插生根能力。结果表明 ,嫩枝以ABT 1号生根粉 6 0 0mg/kg +IBA 6 0 0mg/kg处理的效果最佳 ,半木质化枝条以ABT 1号生根粉 80 0mg/kg +IBA 80 0mg/kg处理的效果最好 ,完全木质化的枝条以ABT 1号生根粉 10 0 0mg/kg +IBA 10 0 0mg/kg处理的效果最好 ;3种基质的对比试验中以 10 0 %红心土表现最好 ;7个西南桦不同种源扦插生根试验结果中 ,以M16号种源的 3项生根指标表现最好更多还原

【Abstract】 Betula alnoides is a valuable tree species in tropical and warm Sub-tropical areas in Southeast Asia and China.The rooting ability of cutting was studied in this paper with different concentrations of root-inducing powder,different lignifying degrees of cutting,multiple mediums and various provenances.The results showed:ABT-1 root-inducing powder with 600 mg/kg+IBA 600 mg/kg is optimal for summerwood cuttings,ABT-1 800 mg/kg+IBA 800 mg/kg for half-lignified cuttings,and ABT-1 root-inducing powder 1 000 mg/kg+IBA （1 000 mg/kg） for fully lignified cuttings.The root-forming ability with 100% red subsoil among 3 mediums and of M₁₆ among all provenances in 3 rooting indices are respectively best.更多还原