厚朴人工林优树选择研究

Study on Plus Tree Selection Technology of Magnolia officinalis Plantation

为了选择优良厚朴单株,以安康市厚朴人工林为研究对象,以树高、胸径、材积为数量评价指标,结合厚朴酚类含量质量指标,采用5株优势木对比法进行厚朴人工林优树选择。结果表明:候选优树树高、胸径、材积分别大于5株对比优势木平均值的1%、8%、20%。在选定36株候选优树中,初选15株,入选率41.7%;复选4株,入选率12.5%。厚朴人工林的优树选择对指导并规范厚朴的栽培技术有重要的理论意义,对厚朴产业规模化发展,提高当地居民经济收入也有一定的积极作用。

Taking Magnolia officinalis plantation in Ankang city as the research object, based on quantity indexes （tree height,DBH, timber volume） in combination with quality indexes （honokiol class content）, the plus tree selection technology was studied using five-dominant-trees method. The results showed that the tree height,DBH, timber volume of candidate plus tree were respectively 1 % ,8%,20% greater than that of comparison trees. 15 of 36 candidate trees were selected according to this criterion and the original selection ratio was 41.7% ; 4 of 36 candidate trees were selected according to this criterion and the multiple selection ratio was 12. 5%. Therefore,the plus tree selection of M. officinalis in this area had theoretical significance for standardizing its scale development and increasing household income. cultivation technique, particularly for the promotion of its scale development and increasing household income.