刺槐（Robiniapseudoacacia）原产北美东部阿帕拉契亚山脉和奥萨克山，是我国温带及三北地区重要的造林先锋树种，栽培面积达1300万hm2，为我国面积最大的人工林树种。四倍体刺槐是由韩国山林厅林木育种研究所应用倍性育种技术培育成功的刺槐优良品种，1997年引入我国。经过西 Robinia pseudoacacia is a native plantation of the eastern Appalachian Mountains and Osak Hill in North America. It is an important afforestation species in the temperate and three northern regions of China with a cultivated area of ​​13 million hectares. It is the largest tree plantation in China. Tetraploid Robinia pseudoacacia is a fine variety of Robinia pseudoacacia cultivated successfully by the ploidy breeding technique by the Forest Breeding Institute of Korea’s Forestry Department. It was introduced into China in 1997. After the west