中山杉9号的扦插繁殖技术研究

摘要

为了促进中山杉标准化生产，研究了扦插季节、激素种类及浓度、扦插基质等因素对中山杉9号插穗生根的影响。结果表明：6月中下旬以当年生半木质化枝条作为插穗，选择体积比1∶1的泥炭土与珍珠岩作基质，用NAA与IBA激素处理插穗基部，500 mg・L‐1 NAA快浸30 s ，1000 mg・L‐1 IBA快浸30 s ，扦插后置于全光喷雾条件下，插穗50 d后生根率可达85％以上。%In order to promote standardization production of Taxodium Zhong shansa ,the effect of cutting time , plant hormone and cutting medium on the rooting of Zhong shansa 9 was studied .The results showed that the optimum shoot for cutting was collected in late June .The suitable cutting medium was a mixture of sterilized peat and perlite (1∶1 v/v) .The combination of 500 mg・L‐1 NAA (30 s) and 1 000 mg・L‐1 IBA (30 s) was the best treatment of plant hormone .The rooting rate was above 85% after 50 d under the above conditions and all optical spray .