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[目的]通过对路用乡土植物区资源利用研究,解决生物工程所需的乡土植物资源不足问题。[方法]以西北黄土高原区为研究范围,以调查研究为主、试验研究为辅开展了乡土植物资源筛选的研究工作,调查了该区域能在恶劣条件下生长的植物种类及其在路域的适应状况,对有望大规模应用的植物组合模式进行了综合观测及评定。[结果]研究确定了该区中央分隔带可栽种乔木有4种,分别为侧柏、桧柏、圆柏、榆树;灌木有9种,分别为枸杞、柽柳、刺枚、连翘、四翅滨藜、榆叶梅、沙棘、紫穗槐、丁香。另皂荚、刺槐、沙枣、火炬、垂柳、旱柳及白腊树形高大饱满、景观效果好,适宜作为行道树种植;灌木分枝多、树形散乱、高度有限不宜单植,与植株比较高大的树种配合栽种可达到较好的景观效果;山桃、榆树易受虫害,宜和其他树种间植,在空间上阻隔传播。[结论]该研究为路域乡土植物资源筛选研究奠定了基础,为解决生物工程所需的乡土植物资源不足问题提供了帮助。
[Objective] The research aimed to solve the problem of shortage of native plant resources required for bioengineering through the research on resource utilization of native plants in the road. [Method] Taking the Northwest Loess Plateau as the research area and the investigation and study as the main part, the research carried out the research on the selection of native plant resources, and investigated the species of plants that can grow in harsh conditions in this area, The comprehensive application of the plant combination model, which is expected to be applied on a large scale, has been comprehensively evaluated and evaluated. [Result] The study determined that there are 4 kinds of arbor can be planted in the central dividing zone of this area, they are oriental arborvitae, cypress cypress, juniper cypress and elm respectively. There are 9 kinds of shrubs, which are Chinese wolfberry, Tamarix, Atriplex, Prunus triloba, seabuckthorn, Amorpha fruticosa, cloves. Another acacia, acacia, date jujube, torch, weeping willow, Salix and white waxy tall, landscape effect is good, suitable as a street tree planting; shrubs and more tree-shaped scattered, highly limited not only single plant, and tall plants Of trees with planting can achieve better landscape effect; peach, elm susceptible to pests, should be planted with other species, in the spatial barrier transmission. [Conclusion] This research lays the foundation for the screening of native plant resources in roadsides and helps to solve the problem of insufficient native plant resources needed for bioengineering.