建国以来,自治区国营农场和广大农村都营造了不少林带,但多是纯树种林。由于树种单一,不论从利用空间,光能或防风效果都存在一些问题,特别是病虫害较严重。为了更好的发挥林带作用和促进林业发展,今后应提倡多营造混交林。 所谓混交林,就是把乔木、亚乔木、灌木等不同类型的树按一定的比例和规格混合种在一起。混交林,一般有块状混交、带状混 Since the founding of the People’s Republic, many state-owned farms in the autonomous region and in the vast rural areas have created many forest belts, but mostly pure tree species. Due to the single tree species, there are some problems with light energy or windbreak effect, especially from the use of space, especially pests and diseases. In order to give full play to the role of forest belt and promote the development of forestry, we should advocate building mixed forests in the future. The so-called mixed forest, that is, trees, arborvitae, shrubs and other types of trees by a certain percentage of the specifications and mix together. Mixed forest, generally mixed block, ribbon mixed