提高营林生产经济效益,是目前林业生产中的重要任务。营林生产包括范围很广,提高营林生产经济效益的途径亦很多,如搞好立体生产、调整林种、树种结构,以及主伐利用、抚育间伐、速生林抚育管理等。但根据我县具体情况,我认为,提高我县国营林场营林生产的经济效益应以调整林种、树种结构,增加经济林和速生林比重为主。从直接经济效益看,防护林,特用林生产周期长,用材林次之,但用材林中速生丰产林的生产周期和 Improving the economic benefits of silviculture is an important task in forestry production. Forest production includes a wide range of ways to improve economic efficiency of forest production and management. There are also many ways to improve the economic benefits of forest production, such as improving the three-dimensional production, adjusting forest species and the structure of tree species, and cutting and harnessing, thinning and rapid growing forest management. However, according to the specific conditions of our county, I think that to improve the economic benefits of the forestation of state-owned forest farms in our county, we should mainly adjust the types of forest species and tree species and increase the proportion of economic forests and fast-growing forests. From the perspective of direct economic benefits, shelterbelt and special forestry production cycle is long, followed by timber, but the production cycle of fast growing and high yield forest