马占相思无性系选择研究  

The Study for Elite Clones Selection of Acacia mangium

作　　者：陈祖旭[1] 刘水娥[1] 孟宪法[1] 张方秋[1] 李小梅[1] 

机构地区：[1]中国林业科学研究院热带林业研究所,广州510520

出　　处：《广东林业科技》2006年第3期59-63,共5页Forestry Science and Technology of Guangdong Province

基　　金："九五"攻关"相思纸浆用材树种良种选育及培育技术"(96-011-01-05)

摘　　要：文章对32个马占相思(Acacia mangiumW illd.)无性系进行选择试验,结果表明:4年生的32个无性系中单株材积、胸径、分枝差异都达到显著或极显著水平;生长最好的无性系为58号和74号,单株材积分别为0.077 906 m3和0.072 317 m3,年均材积生长量分别为32.428 37 m3/(hm2.a)和30.101 95 m3/(hm2.a);与总平均值25.429 55 m3/(hm2.a)相比,年材积增益分别为27.52%,18.37%。This research studied 32 clones of Acacia mangium in field trail for selection the elite clone for paper- pulp wood and big- log wood production. The results showed that there were significant differences among 32 clones at four traits, such as the single stem volume of four - year - old trees＇, the breast - high diameter and the number of branch. Clone 58 and 74 were growing much faster and better than the others. The single stem volumes of these two clones were 0. 077 906 m^3 and 0. 072 317 m^3 respectively. The stem volumes per year of them were 32. 428 37 m^3/（hm^2 ·a） and 30. 101 95 m^3/（hm^2·a） respectively. And the gains of stem volume （contract with the average stem volume of total clones, 25. 429 55 m^3/（ hm^2·a）） were 27.52% and 18.37% respectively.

关 键 词：马占相思 无性系 选择 

分 类 号：S792.17[农业科学—林木遗传育种]