米老排在广西国有大桂山林场的引种试验

The Introduction of Mytilaria laosensis in Guanxi State’s Daguishan Forest Farm

摘要: 米老排是热带优良速生树种。为探索米老排在广西东北部的生长适应性，广西大桂山林场在1985年至1995年之间从广西凭祥引种米老排。试验结果表明，27年生米老排人工林平均树高26.9 m，平均胸径23.6 cm，单株材积0.5880 m³；生长量高于原产地。2013年从本场引种试验林优良母树上采种育苗，2014年3月造林，2022年4月测定，平均树高13.2 m，平均胸径12.9 cm，年均树高和胸径生长量分别大于广东东莞、江西崇义、福建仙游等地的引种试验林。表明米老排适合大桂山林场的气候土壤条件，引种试验是成功的。

Abstract: Mytilaria laosensis is a fast growing species in tropic area. In order to research its suitability in the northeast of Guangxi, it was introduced to Daguishan Forest Farm from Guangxi Pinxiang from 1985 to 1995. The test results showed that the plantation of Mytilaria laosensis grew very well on Daguishan Forest Farm. The mean height was 26.9m and DBH was 23.6cm at 27 years old. The mean height was 0.99 m per year and the DBH was 0.87cm per year. The seed collecting from the test plantation and seedlings were carried out in 2013. The new gen-eration seedlings were planted in 2014. The mean height was 13.2 m and DBH was 12.9 cm at 8 years old. The mean height was 1.65m per year and the DBH was 1.60cm per year. The plantation growths of Mytilaria laosensis in Daguishan Forest Farm were bigger than they were in Guangdong (Dongguan), Jiangxi (Chongyi) and Fujian (Xianyou). The research result shows that Mytilaria laosensis is suitable to the conditions of climate and soil in Daguishan Forest Farm. The introduction is successful.