我国木材加工业原本落后，80年代以前主要是将原木加工成板方材的粗加工，人造板等细加工项目虽有一些，但数量很少，产量和技术水平也很低。因此，林业的木材综合利用能力很低，造成大量“三剩”──伐区剩余物、造材剩余物和木材加工剩余物。80年代后，为缓解森林资源危机，? The timber processing industry in our country lagged behind originally. Before the 1980s, mainly the processing of logs into rough products of sheet metal, although some of the fine processing projects such as wood-based panels were small in quantity, but the output and technical level were also very low. As a result, the comprehensive utilization of timber in forestry is very low, resulting in a large number of “three leftovers” - residues in the cutting area, surplus of construction materials and wood processing residues. After the 1980s, in order to ease the crisis of forest resources,