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香椿是我国特有的经济树种之一,栽培历史悠久,是一种风味独特、营养价值丰富的纯天然无公害的绿色食品,倍受广大人民群众的喜爱。但是,长期以来,由于受传统观念和栽培技术的制约,香椿树大多为自然散生、粗放管理,并且树木生长营养不良,树形杂乱,每年
Toon is one of the peculiar economic tree species in China. It has a long history of cultivation and is a natural and pollution-free green food with unique flavor and rich nutritional value, which is much loved by the general public. However, for a long time, due to the traditional concepts and cultivation techniques, most of them are naturally loose and extensively managed, and the tree grows malnourished and the tree is disorderly. Each year