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香椿[Toona sinensis(A·Jnss)Roem]适应性较强,繁殖容易,生长迅速,材质优良,在我国已有2300年的栽培历史,成为用材、防护、食用和四旁绿化的优良树种。在香椿经营中,幼树的管理非常重要,尤其是造林后头两年,往往是成败的关键。研究这一阶段的生长规律,有十分现实的意义。1982—1983年,我们进行了这项工作。研究方法 1.营造观测试验林。在洞庭湖平原选择地下水位为2.0±0.5米的平地上营造正方形观测区,植树25株,密度2×2米,种源来自湘西,自育1年生苗,苗木质量一般。
Toona sinensis (A. Jnss) Roem has strong adaptability, easy propagation, rapid growth and good material quality. It has been cultivated for 2,300 years in our country and has become an excellent tree species for timber, protection, food and greening. In toon management, sapling management is very important, especially after the first two years of afforestation, often the key to success or failure. Study of this stage of the law of growth, there is a very real significance. In 1982-1983 we carried out this work. Research methods 1. To create a test forest. In the selection of the groundwater level of 2.0 ± 0.5 m in the Dongting Lake Plain, a square observation area was planted and 25 trees were planted with a density of 2 × 2 m. The provenance was from western Hunan.