“三椿”指的就是香椿,紫椿(又叫涩椿)、红椿(又叫臭椿)。皆为楝科高大落叶乔木。“三椿”适应性强,海拔800至2,700米的地区都能生长,在石灰岩地区生长最好。生长速度快,一般年均高生长1米、径生长2厘米,比杉木长得还快。“三椿”材质坚硬、干直、少节、心材红色,是制造家俱的好材料,是农民群众喜欢栽培的四旁树种。香椿的叶无毛,叶色淡绿而软。紫椿的叶有毛, “Three Chun” refers to the toon, purple Chun (also known as Shibuya), red toon (also known as Ailanthus). All are tall branches deciduous trees. “Tsubaki” adaptability, 800 to 2,700 meters above sea level can grow in the limestone area to grow the best. Fast growth, the average annual growth of 1 meter in diameter, diameter growth of 2 cm, grow faster than the fir. “Three Chun” hard material, dry, few sections, heartwood red, is a good material for the manufacture of furniture, farmers like the cultivation of four species of trees. Toona leaves no hair, pale green color and soft leaves. Crab’s leaf hairy,