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在人们的日常生活中,几乎到处离不开木材。”从家庭用的火柴、家具到小学生用的铅笔、书桌,都能看到木材的踪影;至于在生产活动中,修屋架桥、采煤、输电、造纸等等,可以说都有木材的“功劳。”而树木的成材,不同于蔬菜和粮食,它生长周期长,一般树木成材要二三十年,乃至更长的时间,像红松这类性能好、适用性强的优质材,至少要近百年方可采伐利用。可见木材的短缺是带有普遍性的。为此,各国许多科学家都致力于人
In people’s daily life, almost everywhere can not do without wood. “The wood can be seen from home-use matches and furniture to primary school students’ pencils and desks. As for the production activities, building bridges, coal mining, power transmission, paper making, etc. can all be said to have wood ”Credit. "And the trees grow, is different from vegetables and food, it grows long cycle, the general timber into the material to twenty or thirty years, and even longer, such as korean pine good performance, applicability of high quality material, at least near Hundreds of years before harvesting can be seen that the shortage of timber is universal.To this end, many countries are committed to the many scientists