In the period of Qin and Han dynasties,with the quick growth of population,complete building of irrigation,expanding of the paddy fields and improving of plant technology,agricultural development in Southern ShannXi faced its first climax.At the end of Han dynasty and Three Kingdoms,agriculture in southern ShannXi was prosperous for a time.In the period of Wei-Jin Dynasties,agriculture in southern ShannXi experienced a fluctuating;and agricultural development had been declined from Western Jin Dynasty.Because there was an introducing of advanced technology and immigrating of the minority nationalities,especially the introduction of winter wheat,agricultural development in southern ShannXi had a new content.Traditional agriculture culture,gathering culture,fishing and hunting culture existed simultaneously.Hills agriculture was developed deeply.