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国际林业研究机构联合会(简称国际林联)于1989年9月24～28日,在苏联里加市召开了“树叶收集和利用”会议。有苏联、瑞典、加拿大、捷克斯洛伐克、芬兰、匈牙利、民主德国、中国的代表38人出席,还有列席代表23人,共收到论文41篇。国际林联执行委员Ievins I.教授和Wilsson P.O.教授主持了这次会议,并在会议上作了重要讲话。会议的中心议题是:1.树叶收集与生态的关系;2.树叶化学成分的研究;3.树叶收集机械和树叶加工与设备;4.树叶加工产品的利用。
The International Federation of Forestry Research Institutions (referred to as the International Forestry Union) held a meeting on “Leaf Collection and Utilization” in Riga, the Soviet Union, from September 24 to 28, 1989. There were 38 delegates from the Soviet Union, Sweden, Canada, Czechoslovakia, Finland, Hungary, Democrat Germany and China, as well as 23 delegates and received 41 papers. The Executive Director of IFC Fuso Ievins I. and Professor Wilsson P.O. presided over the meeting and made important speeches at the meeting. The central topics of the conference are: 1. The relationship between the collection of leaves and ecology; 2. The study of the chemical composition of leaves; 3. The collection of leaves and the processing and equipment of leaves; 4. The utilization of leaf processing products.