香椿为株科植物香棒树上的嫩芽和嫩叶。俗称“香椿芽”、“香椿头”。我国是香椿的故乡,栽培历史悠久,庄子曾在《逍遥游》中夸张地说:“上古有大椿者,以八千岁为春,八千岁为秋”。栽培地区广泛,北至辽宁,南至两广,其中,以山东、安徽、河南、河北、陕西为主要产地。是我国独有一种树上佳蔬,远在唐朝就已被列为贡品了。种植品种有两大类:一是紫香椿,幼芽呈绛红色,富光泽,香味浓,油脂含量高;二是绿香椿,幼芽为绿色,香味较 Citron is the bud and young leaf of the aroma tree of the plant family. Commonly known as “Taro” buds, “Taro head”. China is the hometown of Xiangxi and has a long history of cultivation. Zhuangzi exaggeratedly stated in his “Agriculture Tour”: “The ancients had a great monk, eight thousand years old for the spring, eight thousand years old for the autumn”. The cultivation area is extensive, from Liaoning in the north to Guangdong and Guangxi in the south, among which Shandong, Anhui, Henan, Hebei and Shaanxi are the main producing areas. It is a kind of unique vegetable on the tree in China. It was listed as a tribute in the Tang Dynasty. There are two major categories of planting varieties: the first is purple tortoiseshell, the young buds are bright red, rich luster, strong flavor, high oil content; second, green pods, young buds are green, fragrance