徐光启是明代著名科学家、政治家。他提倡农学,引进番薯,编纂了《农政全书》。天启年间,徐光启开始专门致力于农业研究。他不仅研究了大量的农业资料,并且能够理论联系实际进行科学实验。甘薯由国外引进中国之初,只在福建沿海很少的一些地方种植。徐光启把它引进家乡种植,进行了多次试种,终于获得成功。此后,他又将甘薯的种植扩大到全国。《农政全书》基本上囊括了中国古代汉族农业生产和人民生活的各个方面,而其中又贯穿着一个基本思想,即徐光 Xu Guangqi is a famous scientist and politician in Ming Dynasty. He advocated agronomy, the introduction of sweet potato, codified the “whole book of agriculture.” Apocalypse years, Xu Guangqi began devoted to agricultural research. He not only studied a lot of agricultural information, and can be theoretically linked to the actual scientific experiments. When sweet potato was first introduced into China from abroad, it was planted only in some parts of Fujian coast. Xu Guangqi introduced it to his hometown for planting, conducted several trial planting, and finally succeeded. Since then, he has expanded the cultivation of sweet potato to the whole country. The book of agricultural affairs basically covers all aspects of agricultural production and people’s life in ancient Han Chinese, and one of them runs through a basic idea that Xu Guang