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檫树是我国南方珍贵、速生、优质的主要用材树种之一。积极开展檫树单株选优工作,对于建立种子园,加速良种繁育,实现檫树良种化有着极其重要的意义。随着国民经济发展的需要,檫树人工林栽培面积越来越大,从而迫切的需要我们积极地开展檫树选优工作。为此,我们从1977年起,在以沅陵为主的黔阳地区六个县,共作标准地30块,调查了2100多株样木,拟选优树39株,伐倒解析木145株,对檫树选优的方法和标准进行了一些调查、探讨。一、选优林分的选择“优树”是指在相同立地条件下和同
Sassafras tsumu is one of the main timber species of precious, fast-growing and high quality in south China. To actively carry out the work of selecting the best tree plant tree for the establishment of seed orchard, accelerate the breeding of elm trees, tree planting is extremely important significance. With the development of the national economy, the planting area of Castanopsis fargesa plantations is getting larger and larger, which urgently requires us to actively carry out the work of selecting the best trees. To this end, we started from 1977, in Yuanling-based six counties in Guizhou Province, a total of 30 standard ground, surveyed more than 2,100 samples of wood, the proposed planted tree 39, Strain, the method and standard selection of the elm trees conducted some investigations and discussions. First, the choice of optimal stand choice “You-tree” refers to the same site conditions and the same