贾思勰是北魏的一位杰出的农业科学家,也是当时著名的法家,曾当过高阳太守。他所生活的年代,是经过自西晋末年长期战争与分裂后,我国北方社会经济开始恢复的北魏时期。统一了北方的北魏政权,为了维护自己的统治,加强兵源、财源,实行了一系列的社会改革,发展农业生产。当时,在坚持统一还是分裂,坚持革新还是复旧,是重 Jia Siyi is a distinguished agricultural scientist of the Northern Wei Dynasty, is also a famous lawyer at that time, once served as Gaoyang prefect. The era in which he lived was the period of the Northern Wei Dynasty after the long-term war and division in the late Western Jin Dynasty and the resumption of social economy in northern China. In order to safeguard its rule, the Northern Wei Dynasty unified the northern government, strengthened the sources and sources of funds, and implemented a series of social reforms to develop agricultural production. At that time, it was important to adhere to the principle of reunification or secession and insist on reform or revival