juvenile period meaning in Chinese

少年期

In contrast to herbaceous plant , the long juvenile period is the main obstacle to traditional breeding of trees
木本植物相对于大田作物和其他草本植物有一个较长的营养生长期，这是运用传统杂交育种方法改良木本植物性状的主要障碍。
To shorten ginkgo juvenile period , numerous studies on its culture and conventional breeding technology has been done , but success is very little
为缩短银杏童期，果树工作者进行了大量的研究，从栽培方式，传统育种方法进行了探索，但成效不大。
Seeds of ginkgo is used as a dryfood and is full of nutrition . its juvenile period is too long and seedling will flower after more than ten years . long juvenile period severely restricts the progress of its breeding and reduces its economic value
银杏果实营养丰富，味道鲜美，遗憾的是银杏的童期很长，被称为公孙树，实生树的开花需要十几年，严重制约着银杏品种改良和经济利用。