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青杨是我省重要速生用材树种,生长快,材质好,适应性强、分布广,长期被群众所栽植。但是当前从青杨生长情况看,多数有衰退之势,不能满足急需木材的要求,病虫害严重,河滩林内“小老树”多。因此。对青杨认真地进行选优工作就非常必要。青杨在长期生长过程中,由于受复杂的自然环境的影响和多种人为的干预,个体的遗传性不断发生变化,产生了同一树种的不同个体,在生长速度,木材产量与质量及对
Qingyang is an important species of fast-growing timber in our province, grow fast, good material, adaptable, widely distributed, long-term planted by the masses. However, the current situation from the growth of Qingyang, the majority of the recession trend, can not meet the urgent requirements of timber, pests and diseases serious, river beach “little old tree” and more. therefore. It is very necessary for Qingyang to carry out the selection work carefully. In the process of long-term growth, Populus euphratica, due to the complex natural environment and various human interventions, the individual’s heredity constantly changes, resulting in different individuals of the same tree species in terms of growth rate, timber yield and quality,