为扩大我县优良树种资源,加速实现园林化,尽快改变木材奇缺的局面,自1963年以来,大沙河林场和本所先后开展引种试验,引进杨树90个品种,包括欧美杨类,小美杨类和白杨派杂交种。其中,Ⅰ—214杨、沙兰杨和欧美杨生长最快,在生产上已经推广,并收到显著增益。现将这三品种引种及栽培情况综述如下。 In order to expand the county’s excellent tree resources, speed up the realization of the garden, as soon as possible to change the situation of the wood scarce, since 1963, Dashahe Forest Farm and the Institute has introduced the introduction of 90 species of poplar introduced, including Europe and the United States Yang, small American poplar and poplar hybrids. Among them, I-214, Salmonella and Euonymus japonicus grow fastest, have been promoted in production, and received significant gains. Introduction and cultivation of these three varieties are summarized below.