每一个国家的文明都是在不断的吸收外来因素和向外传播的过程中向前发展的,中国古代文明的发展也是如此,吸收和传播是经常不断地进行的。汉代开通的丝绸之路,不仅是“丝织品”和其它物资的传播贸易之路,这条漫长的古道突破了国家、民族、地域的限制,带给人类社会更积极的是文明的交融和渗透。本刊所载张箭教授《汉代域外农作物的引进和发展》一文已对汉代从西域 Civilizations in every country are moving forward in the process of constantly absorbing external elements and spreading outward. So is the development of ancient civilizations in China. Absorption and dissemination are constantly carried out. The opening of the Silk Road in the Han dynasty was not only a road of trade in the spread of “silk fabrics” and other materials. This long ancient trail broke the national, ethnic and geographical restrictions and brought more positive social and cultural integration penetration. The article contains Professor Zhang Jian “Introduction and development of crops outside the Han Dynasty,” a text of the Han Dynasty from the Western