汉魏六朝时期,华北丰富的水资源、众多的水利工程以及南方稻作技术的北传,使得该地区的水稻种植面积不断扩大,水稻生产技术逐步提高。南下的北人,把华北的水稻种植技术带到南方,促进着南方稻作农业的发展。 During the period of Han, Wei and Liu dynasties, abundant water resources, numerous water conservancy projects in North China and the northward transmission of rice technology in the South made the area under rice cultivation continuously expanding and the technology of rice production gradually increasing. The north people southward brought the rice planting technology in northern China to the south and promoted the development of rice farming in the south.