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大官杨系天然杂种,具有生长快、材质好、木纤维质地优良等特点。六十年代初期引进我市后,一般五年成椽,十年成檩、部分成梁,深受群众欢迎。但由于种种原因,大官杨后期生长量下降,易受病虫危害,降低了利用价值和经济价值。1970年,我们借鉴利用小叶杨、美杨伐桩嫁接毛白杨的经验,在大官杨根桩上改接毛白杨,获得成功,后陆续推广改接了20多万株,目前改接的毛白杨生长良好。早期改接的已成材,并采伐利用。经过实践摸索出了一套比较系统的嫁接方法。
Chief officer Yang Department of natural hybrids, with fast growth, good material, wood fiber texture and other characteristics. After the introduction of the city in the early 1960s, the general five years into rafters, ten years Cheng Yao, part of the beam, welcomed by the masses. However, due to various reasons, the growth rate of the late male Yang decreased, susceptible to pests and diseases, reducing the value of use and economic value. In 1970, we learned from the experience of using Populus simonii and Populus trichocarpa cultivated in the United States to cultivate Populus tomentosa. We succeeded in poplar cultivation on the Yang root piles of the great officials and succeeded in popularizing more than 200,000 strains of poplar afterwards. Poplar grows well. The early change has been made of materials, and cutting use. After practice to explore a set of more systematic methods of grafting.