加拿大种子学家王世彬教授在21届国际种子试验大会专题组上作了发言,现整理报道如下。种子生产和调制加拿大从1982年—1983年收集了34个松柏科树种的53亿粒有生命种子用于研究和栽植,目前种子园生产的改良代种子只占生产用种的0.2%。五、六十年代早期,美国、澳大利亚、新西兰就开始进行林木改良工作,每年都从建成的种子园中生产大量改良代的种子。因此,种子园被公认为生产大量遗传 Professor Wang Shibin, a Canadian seedologist, made a speech on the theme group of the 21st International Seed Test Congress. The report is collated below. Seed Production and Modulation Canada collected 5.3 billion live seeds from 34 species of coniferous trees for research and planting from 1982 to 1983 and currently produces only 0.2% of the improved seeds for seed production in seed orchards. In the early 1960s, the United States, Australia and New Zealand started the forest improvement program and produced large quantities of seeds of improved generation from the completed seed orchards each year. Therefore, the seed garden is recognized as producing large amounts of heredity