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发展经济林,特别是发展林农混作的经济林,是振兴晋北经济,加速农民脱贫致富的一条有效途径。然而,晋北地区是许多经济树木分布的北限,要大规模发展经济林,首先要解决树种与气候相适应的问题,解决不好这个问题,就会造成巨大的损失,但是解决这个问题可以达到事半功倍的效果。日本学者为此提出了“三 E 主义”,“三 E”即是林杀进化、生态环境、经济效益三个英文单词的第一个字母。其大意是种树时要了解树木的系统发育过程、生物学特性,掌握植树地的生态条件是否满足树木需求,只要因地制宜按客观规律办事,就一定可以充分发挥树木、土地、气候等各方面的优势,做到投资少、效益高,附合商品生产的要求。我们在发展经济林时应当借鉴这个理论,就此我们谈一些个人的看法。
The development of economic forests, especially the development of forest-farmers mixed economic forests, is an effective way to rejuvenate the economy of northern and northern China and speed up the peasants’ removal of poverty and prosperity. However, the North of Jinbei is the northern limit for many economic trees. To large-scale economic forest development, we must first solve the problem of tree species adapting to the climate. If the problem is not solved well, it will cause huge losses. However, to solve this problem, Effect. Japanese scholars put forward “three E-doctrines” for this purpose, and “three E’s” are the first letters of the three English words that make the forest kill evolution, ecological environment and economic benefits. The effect is to understand the tree’s phylogenetic process and biological characteristics when planting trees. To know whether the ecological conditions of tree planting meet the needs of trees or not, as long as they act in accordance with the objective laws according to local conditions, they can give full play to the tree, land, climate and other aspects Advantages, low investment, high efficiency, meet the requirements of the production of goods. We should learn from this theory when developing economic forests. In this connection, we will talk about some personal opinions.