国槐(Sophora japonica L.)是豆科槐属落叶乔木,历史悠久寿命长。国槐树势优美,树干端直,树型古朴典雅,春季新叶滴翠,花蕾放香,盛夏遮阴爽人,秋季叶片晚凋,绿化效果非常好。国槐的抗逆性强、耐寒、耐旱、耐空气污染。经济价值也很高,在东北、华北被许多城市选为市树。但经过长期大面积栽植,却发现并不象宣传介绍中的病虫害少,易于管理。由于先天性的因素,该树一旦遭受某种病虫害,将会严重影响生长,甚至导致死亡。根据多年来的工作经验,笔者对 Sophora japonica (L.) is a legume Sophora deciduous trees, long history and long life. Sophora japonica beautiful, trunk straight, tree simple and elegant, the new spring leaves Dicui, buds fragrant, summer shade cool, autumn leaves late withered, greening effect is very good. Sophora japonica has strong resistance to cold, drought and air pollution. Economic value is also high, in the northeast, North China was selected as the city tree in many cities. However, after long-term large-scale planting, they found that they were not as susceptible to pests and diseases as the introduction of the introduction and were easy to manage. Due to congenital factors, the tree once suffered from a pest and disease, will seriously affect the growth, and even lead to death. According to years of work experience, I right