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三十年代末期,美国大部分森林珍贵树种的蓄积已近于枯竭,锯材原木很缺乏。此后,对木材的需要又进一步增加,除进口外,主要靠提高森林生产力和集约经营来解决,而遗传育种方法在增产措施中占有重要地位。为此,林业试验站里(相当所级)设有遗传育种研究室。一个试验室为一定地区服务(包括一个或几个州)。目前共建立了8个科学研究站,每个站有10—15个遗传实验室。佐治亚州的Makor林业中心(也叫南方松遗传育种中心),并附设有林木种子国家实验室。
In the late 1930s, the accumulation of most precious tree species in the United States was almost depleted, and sawn logs were scarce. Since then, the demand for timber has been further increased. In addition to imports, the solution has mainly been to improve forest productivity and intensive management, while genetic breeding methods play an important role in stimulation measures. To this end, forestry pilot station (equivalent level) with genetic breeding research. A lab serves a certain area (including one or more states). At present, a total of eight scientific research stations have been established, each of which has 10-15 genetic laboratories. Makor Forestry Center in Georgia (also known as Southern Pine Genetics and Breeding Center), along with Forest Seeds National Laboratory.