广东省秃杉引种栽培效果及栽培区划分研究

A Study on Introduction and Culture of Taiwania flousiana in Guangdong and Its Cultural Regional Assignment

198 1年以来在广东 12个点开展了秃杉引种栽培试验 ,结果表明 :秃杉在我省显示了广泛的生态适应性和引种潜力 ,在粤北地区其生长量从幼林起高于速生树种杉木 ,在全省范围内 7a以前略低于杉木。秃杉生长状况受土壤质地和小地形影响 ,在海拔 5 0 0m以上的山地比杉木更适生。用 12个造林点和 10个环境因子材料建立了秃杉生长数量模型。根据栽培区气候因子与秃杉生长表现 ,可将秃杉造林区划分为 :Ⅰ区 :粤北区 ,Ⅱ区 :粤东北区 ,Ⅲ区 :粤西沿海丘陵区 ,Ⅳ区 :粤东、粤中丘陵区 ,其中 ,Ⅰ、Ⅱ区为秃杉适宜引种栽培区。

Taiwania flousiana was introduced to Guangdong in 1981. Since then, the introduction and culture trial was carried out at 12 sites. It has been proved that T. flousiana have broad ecological adaptability an introduction potential, and the plantations performed well. Compared with Cunninghamia lanceolata , its increment is greater in the northern part of Guangdong, while the increment is a little less before 7 years old from the viewpoint of the whole province. The growth of T. flousiana is affected by soil characters and tiny landform, and it is more adaptive than C. lanceolata in the land with altitude over 500 meters. The growth model of T. flousiana was built using the growth data from 12 sits and 10 environmental factors. According to climatic factors and tree growth data, T. flousiana culture region was divided into four: Ⅰ:north of Guangdong, Ⅱ: northeast of Guangdong, Ⅲ: west coastal hilly area of Guangdong, and Ⅳ: east and central parts of Guangdong. Among the four regions, Ⅰ and Ⅱ are the suitable ones for T. flousiana.