杨树是世界著名的速生用材树种,许多国家由于发展杨树而迅速地增加了森林资源,有效地解决了木材短缺的问题。意大利建立杨树速生丰产用材林基地仅占全国森林面积的3%,而提供的木材产量却占全国总产材量的50%。南朝鲜在1978年需要进口木材88%,后来发展杨树,很快地扭转了木材进口的局面。土耳其、匈牙利等国近年发展 Poplar is a world-famous species of fast-growing timber, and many countries have rapidly increased their forest resources by developing poplar trees, effectively solving the problem of shortage of timber. The establishment of poplar fast-growing and high-yield timber forest base in Italy only accounts for 3% of the national forest area, while the wood output provided accounts for 50% of the total national output. In 1978, South Korea needed to import 88% of timber and later poplar trees, which quickly reversed the situation of timber imports. Turkey, Hungary and other countries in recent years