<正>本次试验用四种意大利杨(Ⅰ—63/51、Ⅰ—69/55、Ⅰ—72/58、Ⅰ—214)和我国的毛白杨、拟赤杨、椴木进行实验室和生产性对比试验,抽取试样,测定了4724个数据。试验结果表明,四种意大利杨的单板旋切、干燥,胶合性能良好,对胶粘剂和加工过程均无特殊要求,是一种良好的胶合板用材。

Four species of Italian poplar, i. e., 1-63/51 (Populus deltoides Bartr. cv. "Ha; rvard"), 1-69/55 (P. deltoides Bartr. cv. "Lux"), 1-72/58 (P. euramericana cv. "san Martino)" and 1-214 (P. euramericana cv. 1-214) versus Chinese Populus tomentosa Carr, Alniphyllum fortunei and Tilia amurensis have been adopted in a laboratory and prod uction control experiment. 4724 data have been obtained from a number of samplings. Results show that the properties of the four species of Italian poplar are fine in veneer peeling, drying and bonding, that they have no special requirements for bon; ding agent and processing and that they are good timber supply for plywood manu: facturing. This will give great practical significance to the development of Italian poplar production in our plain areas, to the building of plywood timber bases and to the development of plywood industry in our country.