党的十一届三中全会以后,由于联产承包责任制和农村林业政策的落实,社员户经营的自留山、自留坡,一般都喜欢既出薪炭材,又出农具和檩、椽用的小径材,并且还想培育一些做梁和家具用的大径材,来满足生产和生活的需要。这就向我们提出了一个问题,在小块林地上怎样才能达到这个要求呢?我认为采用中林作业法,是比较适合以户为单位的经营方式的。所谓中林作业法,就是在同一块林地上既培育小径材或薪炭材,又培育大径材的经营方式。它是结合了乔林和矮林两种作业的特点,使同一林分中同时培育着起源不同、年龄不同的林木。它的森林结构由上层林和下层林两部分组成。上层林起源于乔林作业,是种子更新起来的异龄林,实行择伐,培育大径材,轮伐期 Since the Third Plenary Session of the Eleventh Central Committee of the Communist Party of China, due to the implementation of the contract responsibility system for rural production and the implementation of rural forestry policies, the self-retaining mountains and self-retaining slopes of social welfare households generally like to use both fuelwood and farm implements, and rafters Small diameter material, and also want to cultivate some do beams and furniture with large diameter timber, to meet the needs of production and life. This raises the question to us on how to meet this requirement in the small piece of woodland. In my opinion, adopting Zhonglin Method is more suitable for household-based management. The so-called Zhonglin operation method, that is, in the same piece of woodland to cultivate a small diameter wood or firewood, but also cultivate large diameter timber business. It combines the characteristics of both Qiaoling and Pianlin so that different types of trees with different origins and different ages can be cultivated in the same forest. Its forest structure consists of the upper forest and the lower forest. The upper forest originated in the operation of Qiao Lin, is the seed of different age forest renewal, the implementation of selective cutting, cultivation of large diameter wood, rotation