一、预制构件是农房建材的主力军当前,全国的农房建设出现了前所未有的兴旺景象,这是农村经济形势越来越好的具体反映,也是广大农民迫切要求改善居住条件的必然趋势。农村建房突出的困难是缺乏建筑材料。其中,尤以木材最为缺乏。过去,农村盖房习惯于用木材。而我国森林资源很少,森林复盖率不到12％,比世界平均森林复盖率29％要低得多,木材的供应无论 First, prefabricated components are the main force of building materials for rural housing Currently, there has been an unprecedented boom in the construction of rural housing throughout the country. This is a concrete reflection of the increasingly good economic situation in rural areas. It is also an inevitable trend for the majority of farmers to urgently request improvements in their living conditions. The outstanding difficulty in building houses in rural areas is the lack of building materials. Among them, wood is the most deficient. In the past, rural houses were used to using wood. However, China’s forest resources are few and the forest coverage rate is less than 12%, which is much lower than the average world forest coverage rate of 29%.