国槐,又名中国槐。最宜华北地区栽种,被定为北京市市树。其树形美观,生长中速,寿命长,耐寒抗旱,耐轻度盐碱,抗烟尘及二氧化硫、硫化氢等有害气体,在水土保持、防风固沙、园林绿化等方面起着很重要的作用。 1.有性繁殖 (1)种子采集与净种。其种子于10月份成熟,因种子不落,可在12月份或翌年1、2月份冬闲季节采种。采集后,去杂质,用冷水浸泡十天左右,碾除果皮,水选晾干即得净种。 Sophora japonica, also known as Chinese Huai. Most suitable for planting in North China, was designated as the city of Beijing tree. Its tree-shaped appearance, medium growth speed, long life, cold and drought, mild salt tolerance, anti-dust and sulfur dioxide, hydrogen sulfide and other harmful gases in soil and water conservation, wind and sand fixation, landscaping and other aspects play a very important role. 1. Sexual reproduction (1) seed collection and net species. Its seeds mature in October, because the seeds do not fall, in December or the following January and February winter and winter seasons. After collection, to impurities, soak in cold water for about ten days, crushed peel, water to dry to get net species.