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毛白杨是我省主要造林树种之一,它生长快,材质好,适应性强,深受群众喜爱。但多年来毛白杨良种化进程缓慢,使我省的毛白杨造林一直存在着品种优劣混杂,造林效益较低的问题。我省是毛白杨的主要分布区之一,基因资源十分丰富,但由于毛白杨轮伐期短,栽培点分散,使很多宝贵的基因资源面临丢失的危险。为全面收集保存我省宝贵的基因资源,并尽快选育出品质优良的毛白杨优良品系,我们在全省范围内进行了毛白杨优树选择及收集工作。一、选优目的及对象选优的目的是为了全面收集,保存我
Populus tomentosa is one of the main afforestation species in our province, it grows fast, the material is good, adaptable, deeply loved by the masses. However, for many years, the process of poplar improvement has been slow, so that there is always a problem of merging varieties and merits of afforestation in lower Populus tomentosa in our province. The province is one of the main distribution areas of Populus tomentosa and its genetic resources are very rich. However, due to the short rotation period of Populus tomentosa and the scattered cultivation sites, many precious genetic resources are at risk of being lost. In order to comprehensively collect and conserve the precious genetic resources in our province and to breed excellent quality Populus tomentosa strains as soon as possible, we conducted the selection and collection of poplar trees in the province. First, the purpose of selecting the best and the object The purpose of selecting the best is to fully collect, save me