红花檵木短穗扦插育苗技术研究

[目的]为红花檵木的生产提供参考依据。[方法]以用3种浓度NAA处理过的红花檵木当年生枝条为插穗,在3种不同基质上进行扦插试验。[结果]在相同基质上,500和250 mg/L NAA对插穗生根量的影响差异不大,1000 mg/L NAA处理的插穗生根量最低,最佳处理组合为NAA 500 mg/L＋粗河沙＋本地土壤（粗河沙∶本地土壤=3∶7）或厚河沙＋NAA 500 mg/L 500 mg/L NAA处理的插穗的生根长度最长,1000 mg/L NAA处理的插穗的生根长度最短。相同浓度NAA处理下,在河沙和河沙＋本地土壤上扦插的插穗的生根长度长于本地自然土扦插的插穗。插穗生根长度的最佳处理组合为厚河沙＋NAA 500 mg/L。新梢生长的适宜处理组合为NAA 500mg/L＋粗河沙＋本地土壤（粗河沙∶本地土壤=3∶7）。[结论]综合考虑各因素,红花檵木短穗扦插繁殖的最佳处理组合为NAA 500mg/L＋粗河沙＋本地土壤（粗河沙∶本地土壤=3∶7）。

Research on the Seedling-raising Technique by Single Node Cutting in Lorpetalum chinense

[Objective]The research aimed to supply reference basis for the production of Lorpetalum chinense.[Method] With current L.chinense twigs treated with NAA at 3 concn.as cuttings,the cutting experiments were performed on 3 different substrates.[Result] On the same substrate,the effects of 500 and 250 mg/L NAA on the root numbers of cuttings were little different,the root numbers of cuttings treated with 1 000 mg/L NAA were least and the best treatment combination was NAA 500 mg/L + rough river sand + local soil(rough river sand∶local soil=3∶7) and heavy river sand + NAA 500 mg/L;the roots grown from cuttings treated with 500 mg/L NAA were longest and that from cuttings treated with 1 000 mg/L were shortest.In the treatments with the same NAA concn.,the roots grown from cuttings cultivated on river sand and river sand + local soil were longer than that from cuttings cultivated on local natural soil.The best treatment combination for root lengths of cuttings was heavy river sand + NAA 500 mg/L.The suitable treatment combination for the growth of new shoots was NAA 500 mg/L + rough river sand + local soil(rough river sand∶local soil=3∶7).[Conclusion] After every factor was considered comprehensively,the best treatment combination for propagation by single node cutting in L.chinense was NAA 500 mg/L + rough river sand + local soil(rough river sand∶local soil=3∶7).