中山杉在沿海地区的露地扦插繁殖技术研究

Cutting Propagation Techniques of Taxodium Hybrid‘Zhongshanshan'in Open Field in Coastal Areas

[目的]研究中山杉在沿海地区的露地扦插繁殖技术。[方法]采用嫩枝扦插方法,通过单因子比较试验,研究适宜沿海地区露地扦插中山杉的扩繁条件。[结果]通过10 cm砂石层将扦插床隔离地面,采用全光照喷雾控制叶片湿度达90%,于6月中下旬在3年生中山杉母本上采集插穗,并采用500 mg/L的NAA和1 000 mg/L的IBA分别处理30 s,扦插于体积比3∶3∶4的泥炭土、蛭石和园土混合基质中,可获得最大生根率为93.67%的扦插效果。[结论]该研究为在沿海地区建立中山杉的快繁体系提供依据。

[Objective] To study cutting propagation techniques of ‘Zhongshanshan’ in open field in coastal areas.[Method] Suitable condi-tions for propagation of ‘Zhongshanshan’ in open field in coastal areas were studied by cutting tender branches through single factor comparison test.[Result] When a cutting bed was separated from the ground by 10 cm gravel layer and leaf humidity was kept at 90% by full-illumination spray, cutting slips were collected from female parents of three-year-old ‘Zhongshanshan’ in late June and were treated by 500 mg/L NAA and 1 000 mg/L IBA for 30 s.After they were planted in the mixture of peat soil, vermiculite and garden soil （their volume ratio was 3∶3∶4）, the highest rooting rate was up to 93.67%.[Conclusion] The research can provide a reference for the establishment of rapid propagation system of‘Zhongshanshan’ in coastal areas.