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为了探讨盐碱地区造林绿化中乔灌组合栽植对生长的影响,以提高造林绿化水平,选择了3种乔木(国槐、栾树、合欢)和3种灌木(忍冬、榆叶梅、金银木)进行了组合栽植试验,共设置4种组合(国槐-忍冬、国槐-榆叶梅、栾树-金银木、合欢-金银木),以单独栽植的纯种林为对照,研究了不同组合栽植条件下各树种的植株生长表现.结果表明:乔灌组合栽植与乔木单独栽植相比,乔灌组合栽植的栾树株高和冠幅显著增加、乔灌组合栽植的国槐及合欢株高和冠幅显著降低,茎粗均无显著变化;乔灌组合栽植与灌木单独栽植相比,乔灌组合栽植的榆叶梅的株高和冠幅均显著降低,其叶幕厚度无显著变化;金银木与不同种类的乔木混栽时,其株高和冠幅的差异不具有统计学意义,与合欢混栽的叶幕厚度显著大于与栾树混栽的叶幕厚度.
In order to explore the effect of the combination of tree and shrubs on the growth of afforestation in saline-alkali region and to improve the afforestation level, three kinds of trees (Sophora japonica, Koelreuteria paniculata, Acacia) and three shrubs (Lonicera japonica, Ulmus pumila, A total of four combinations (Sophora japonica-honeysuckle, Sophora japonica-Ulmus pachica, Koelreuteria paniculata-Ulmus pumila, Acacia-Auramina) were set up in combination with the pure-planted monosodium as the control. The effects of different combinations of planting tree species The results showed that the plant height and crown width of the Koelreuteria paniculata plantation increased significantly compared with the single plantation of tree and arbor, and the height and crown width of the plantation of Acacia confusa and Acacia tree decreased significantly, Compared with single shrub planting, the plant height and crown width of cut shrubs were significantly reduced, and the thickness of the leaf curtain did not change significantly. Compared with the different shrubs When mixed planting, the difference between plant height and crown width was not statistically significant. The thickness of leaf curtain mixed with Acacia was significantly larger than the thickness of leaf curtain mixed with Luan tree.