一、引种种类自一九六三年以来,我们有计划地开展了速生用材和特用经济树种的引种工作。十年来,共引入国内外植物80余种,其中包括: (一)速生用材和珍贵树种。如木麻黄、桉属中的十多个种和变种、印度黄檀、四川大中樟、云南樟、米老排、银桦、湿地松、火炬松、意大利松、楹树、白千层、川楝、青皮象 I. Introduction Types Since 1963, we have introduced the introduction of fast-growing timber and special economic species in a planned way. Ten years, a total of more than 80 kinds of plants introduced at home and abroad, including: (a) rapid growing timber and precious tree species. Such as Casuarina, Eucalyptus in more than a dozen varieties and varieties, Indian Dalbergia, Sichuan Dazhong Zhang, Yunnan camphor, rice row, silver birch, Pinus elliottii, loblolly pine, Pinus, pine tree, Melaleuca, Melia, green skin like