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湿地松已逐步成为我国南方14省(区)的主要造林树种之一。在其系统的发育过程中,由于遗传,自然选择和栽培措施等方面的影响,种内的不同个体产生了明显的、稳定的变异特征,分化出了不同的类型。为了选择速生、高生产力的优良类型,几年来,我们在调查总结的基础上,对湿地松进行了观察研究。一、湿地松的类型及其形态特征湿地松个体间形态特征的变异虽是千差万别的,但明显的变异,如芽的颜色、大小、冠形宽窄、分枝习性、节间距离、干形好坏、针叶浓密程度等是有其规律的,在一定程度上反映出它的遗传变异。而且在不同立地条件、不
Slash pine has gradually become one of the main afforestation species in 14 provinces (districts) in southern China. During the development of the system, different individuals within the species had obvious and stable variation characteristics due to the effects of inheritance, natural selection and cultivation measures, and they differentiated into different types. In order to select the excellent type of fast-growing and high productivity, we conducted a survey and study of Pinus elliottii on the basis of investigation and conclusion over the past few years. First, the types and morphological characteristics of Pinus elliottipes Although there are many variations in the morphological characteristics of Pinus elliottii, obvious variations such as bud color, size, crown width, branch habits, internode distance and dryness are good Bad, dense needles have their own laws, to some extent, reflects its genetic variation. And in different site conditions, no