杜仲优良无性系剥皮再生能力及剥皮综合技术研究

A Study on the Bark Renewabilities of Fine Eucommia ulmoides Clones and the Integrated Barking Technique

对杜仲优良无性系剥皮再生能力及剥皮综合技术系统研究结果表明，不同无性系剥面愈合生长能力都很强，其中华仲１～５号表现最好；主干多次剥皮剥面仍能很好愈合，杜仲适宜的剥皮周期是２～３年主干全剥一次；杜仲适宜的剥皮时间为５～６月份；剥皮后喷施高效树木增皮灵，能显著提高再生皮生长速度，剥面愈合率达１００％，再生皮厚增加７６．７％，胸径生长量提高４１．６％

The bark renewabilities of fine E. ulmoides clones and the integrated barking technique were systematically studied. It was found that the bark renewabilities of all the fine E. ulmoides clones were great. The multibarked surface on the main stems healed quickly. The proper period of completed barking on the stems was 2-3 years and the proper barking time was in June to May. A chemical called “Zengpiling” could speed up the growth of the renewed bark with an increase of 76.7% in bark thickness and 41.6% in bark growth.