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一、引言 塞罕坝机械林场始建于1962年,如今已度过了18个春秋。截止1979年底,以落叶松为主的人工林面积达到了80.2万亩,目前已有33.3万亩郁闭成林,落叶松育苗和大面积造林均获得成功。近几年来,落叶松巳进入结实期,在正常年份,每年可产十几万斤落叶松种子支援本省和兄弟省区。因此,引种地区以及木场科技人员都希望了解坝上气候特点及其与落叶松育苗、造林、幼抚等主要林事活动的关系。本文即试图对此作一初步分析总结,以期对林业生产起到一点参考作用。
I. Introduction Saihanba mechanical forest was built in 1962, and now has spent 18 years. By the end of 1979, the plantation area mainly consisting of larches reached 80.2 million mu, and there are 33.3 million mu of closed canopy forests. Larix seedlings and large area afforestation have all succeeded. In recent years, larch has entered a period of consolidation, in normal years, annual output of hundreds of thousands of pounds of larch seeds to support the province and fraternal provinces. Therefore, the introduction of the region and the Kiba field of science and technology personnel are hoping to understand the climatic characteristics of the dam and its relations with the main forestry activities such as larch nursery, afforestation, nursery. This article attempts to make a preliminary analysis of this summary, with a view to forestry production a little reference.