连续３年对毛新×银灰双交杂种硬枝扦插繁殖技术的研究表明：采用温室硬枝扦插和大田硬枝扦插均可获得较理想的效果，但必须注意以下技术措施：①只要是根萌枝条，粗度在５ｍｍ以上均可以用于硬枝扦插，或采用先一年根萌硬枝扦插苗的苗干作硬枝插穗也是可行的；②插穗必须浸水和两端部削光滑；③采用的激素和浓度为生根粉（ＡＢＴ）１号５００ｐｐｍ或吲哚丁酸（ＩＢＡ）５００ｐｐｍ＋萘乙酸（ＮＡＡ）５００ｐｐｍ速蘸处理，可以获得８０％以上的满意效果；④温室扦插时，必须进行炼苗环节．此外，建立采穗圃或根繁圃，并加强其管理，是提高其快速扩繁的首要工作 The study on the technique of hardwood cutting propagation of MaoXin × silver gray double crosses for three years in succession showed that the ideal results were obtained by hardwood cutting in greenhouse and hardwood cutting in field. However, the following technical measures must be paid attention to: Branches, the thickness of 5mm above can be used for hardwood cutting, or use the first year of the root hardwood cutting seedlings of branches for the hardwood cuttings is feasible; ② cuttings must be flooded and both ends of the smoothing; ③ the use of (ABT) 1 500ppm or IBA 500ppm + NAA 500ppm speed dip treatment can get more than 80% of the satisfactory results; ④ greenhouse cutting must be hardened Links. In addition, the establishment of a mining or root nursery and strengthening its management are the primary tasks for enhancing its rapid expansion