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绒毛ＦｒａｘｉｎｕｓｖｅｌｕｔｉｎａＴｏｒｒ.,又称绒毛白蜡 ,是山东鲁北滨海盐碱地区的主要绿化树种之一。该树种枝条交互对生。枝条上、中部萌芽率高 ,骨干主枝的顶端往往产生数个竞争大枝 ,自然接干易造成干形弯曲。根据我们对 17个无性系 7年生试验林修枝时所遇到的问
Velvet FraxinusvelutinaTorr., Also known as velvet white wax, Shandong Lubei Coastal Saline alkali greening one of the main species. The branches of tree species reciprocate. Branches, the middle of the high rate of sprouting, the backbone of the main branches of the top tend to produce a number of competing branches, natural dry easily lead to dry bending. According to the questions we encountered when we pruning seventeen clones of 7-year-old clones of clones