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我省的树木引种工作早在1920年左右就开始了,先后由加拿大、德国、北美、日本、苏联等国引进了部分树种,另外,也从省外引入许多较好的用材和经济树种。经过多年的驯化和栽培,有许多树种如美国五针松(Pinus strobus)、美国短叶松(P.Banksiana)、挪威云杉(Picea abies)、水杉(Metasequoia glyptostro—boiacs)、毛泡桐(Paulownia tomentosa)、光叶榉(Zelkova serrata)、红檞栎(Quercus rubra)等,不仅能正常发育,而且能开花结果。可以说这些树种在我省辽南地区是引种成功的,今后是怎样推广和扩大栽培的问题。
The introduction of trees in our province started as early as 1920 or so. Some trees were introduced successively from Canada, Germany, North America, Japan, the Soviet Union and other countries. In addition, a lot of better timber and economic trees were introduced from outside the province. After many years of domestication and cultivation, there are many tree species such as Pinus strobus, P. Banksiana, Picea abies, Metasequoia glyptostro-boiacs, Paulownia tomentosa, Zelkova serrata, Quercus rubra and so on, not only can develop normally but also bear fruit. It can be said that these species are introduced successfully in southern Liaoning and how to promote and expand cultivation in the future.