乌桕是我区的主要经济树种之一,境内各县均有分布。西部乌江流域的沿河、德江、思南等县尤为集中。长期以来,我区乌桕经营管理粗放,一般7—8年才开始结果,产量低,种内性状变异大,经济效益不高,资源逐年减少。为了提早结果时间,保持母本的优良特性,近几年,我们在完成本区乌桕类型资源调查及优株表型选择的基础上,进行了乌桕无性繁殖技术的研究,做了大量的嫁接试验,由于多种原因,成活率较低。今年初,通过对前期嫁接试验经验与教训的分析,改用花卉繁殖常用 Wuyi is one of the main economic tree species in our district, with distribution in all counties in China. Western Wujiang River along the river, Dejiang, Sinan counties are particularly concentrated. For a long time, the operation and management of blackbirds in our region have been extensive. Generally, the results are only started in 7-8 years. The yield is low, the variation in traits is large, the economic benefits are not high, and the resources are decreasing year by year. In order to early result the time and maintain the excellent characteristics of the female parent, in recent years, we completed the investigation of the genus Ugliness and phenotypic selection of superior plants in this area, , For a variety of reasons, lower survival rate. Earlier this year, through the analysis of previous experiences and lessons of grafting trials, the switch to flowers breeding