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水杉是我国特有的速生用材树种.我站从1970年开始引种,至今已有十三年的历史.现有成片林976亩,速生丰产林10亩.目前生长普遍较好,一般成片林分,9年生平均树高12.5米,胸径12.6厘米.速生丰产林,10年生平均树高15.4米,最大高17.2米;平均胸径16.6厘米,最大胸径25.5厘米;每亩活立木蓄积达14.2875立方米.为了综合分析营林措施与水杉生长的关系,进一步挖掘水杉速生丰产的潜力,从而提高水杉的经济效益,近几年来,我们对水杉速生丰产林进行了观察研究,取得了一定的结果.现整理如下:丰产林的立地概况水杉速生丰产林地设在通商公社境内,
Metasequoia is a kind of quick-growing timber species that we used in our country.It has been introduced for about 13 years now since 1970. There are 976 mu of mature forest and 10 mu of fast-growing and high-yield forest. The average tree height at the age of 10 years is 15.4 meters and the maximum height is 17.2 meters. The average diameter at breast height is 16.6 cm and the maximum diameter at breast height is 25.5 cm. The living stock per acre reaches 14.2875 cubic meters In order to comprehensively analyze the relationship between silvicultural measures and the growth of metasequoia and further tap the potential of the fast growing and high yielding Metasequoia so as to improve the economic benefits of the metasequoia, we have observed and studied the fast growing and high yield plantations of Metasequoia in recent years and achieved some results. Arranged as follows: High-yield forest site overview Fast-growing forest of Metasequoia in the commune,