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广西石质山面积大,宜林荒石山约有266.67万公顷,多年来,由于森林遭到严重破坏,植被减少,当地农村能源十分紧缺。为了加快绿化石质荒山,解决农村燃料的紧缺问题,我们对石山优良能源树——任豆(Ieniainsgnis Chun)进行了研究。一、生物学特性任豆又名任木,系苏木科任豆属的落叶大乔木,生长迅速、成林快、成材早。从对19年生树干解析得知,2—8年生时,高生长迅速,年平均生长量达1.9米;胸径速生期出现在2—8年和14—18年,第二和第八年的生长量分别为1.5厘米和1.43厘米;材积生长在16年生时达
There are about 2.6667 million hectares of rocky hill in Guangxi, and due to the serious destruction of the forests and the reduction of vegetation, the local rural energy resources are in short supply. In order to speed up the greening of rocky hills and solve the shortage of fuel in rural areas, we studied Ieniainsgnis Chun, a fine energy tree in Shishan. First, the biological characteristics Ren also known as Ren Ren, Department of Hematoxylin Leguminosae deciduous trees, rapid growth, forest fast, timber as early as possible. From the analysis of the 19-year-old trunk, 2-8 years old, the rapid growth, the average annual growth of 1.9 meters; rapid growth of DBH in 2-8 years and 14-18 years, the second and eighth years of growth The amount of 1.5 cm and 1.43 cm respectively; volume growth at 16 years of age up