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在全省各地选出的国槐优良单株、优良类型及超级苗的基础上,调查选择优株,筛选出了21个系号,建立了3处区域对比试验林,进行造林试验测定。通过对树高、胸径等指标调查,选出了5个适宜不同区域、不同立地条件的国槐新品种。选出的优良品种,树皮较光滑,有浅纵裂,干形直立,中央领导干优势明显,分枝角度小,有明显的速生性、适生性和较高的观赏价值,适宜我省北方地区选择应用。
Based on the excellent single plant, fine type and super seedlings of Sophora japonica selected from all over the province, we selected 21 superior strains and screened 21 lines, and established three regional comparative test forests for afforestation test. Through the investigation of tree height, DBH and other indexes, five new varieties of Sophora japonica were selected which are suitable for different regions and different site conditions. Selected good varieties, the bark is smooth, shallow longitudinal split, dry erected, the central leading cadres obvious advantages, small branches angle, there is a clear fast-growing nature, fitness and high ornamental value, suitable for the northern part of our province Regional selection application.