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北方干旱少雨,水稻种植离不开灌溉事业,水稻种植的兴表与灌溉事业的盛败密切相关。夏代至春秋时期,北方产生了沟洫水利,水稻开始在黄河中下游地区得到推广。战国至汉唐时,北方农田水利迅速发展,黄河中下游地区形成了一些大面积的稻作区,并推进到西北,东北地区,从而使北方粮食生产有了较大发展。
In the north, there is less drought and less rain. Rice cultivation can not do without irrigation. The development of rice cultivation is closely related to the prosperity of irrigation. From the Xia Dynasty to the Spring and Autumn Period, Gulhane water conservancy occurred in the north and rice began to be popularized in the middle and lower reaches of the Yellow River. During the Warring States Period to the Han and Tang Dynasties, the water conservancy in the northern farmlands developed rapidly. Large-scale paddy areas were formed in the middle and lower reaches of the Yellow River and advanced to the northwest and northeast regions. As a result, there was a great development in northern food production.