根据国槐的特征和习性以及北京地区园林绿化的需要，制定了国槐新品种选育方法和基本原则，对北京地区国槐种质资源进行了全面系统地调查，文中详细描述了北京地区栽培国槐的植物学特征、生物学习性及主要变种，筛选出主干扭曲型、粉红花、紫红花、鲜红花、窄冠型和一朵花内拥有3个雌蕊的国槐新类型等。
According to habits and characteristics of Sophora japonica L. & the needs of landscape greening in Beijing area, the breeding methods and basic principles of new varieties of Sophora japonica L. have been worked out. We did a comprehensive and systematic survey of Sophora japonica germplasm resources in Beijing area. The article describes in detail the botanical characteristics, biological learning and main variants. There are many new variant types, such as Trunk twist, Pink Flowers, Purple flowers, Red flowers, Narrow crown and A flower has three pistils and so on.
