Dahuang literally means "Great Barren" in Mandarin. The name is taken from the Dahuanggou (Hanzi: 大荒沟), a tributary of the Songhua River in Jilin. The name also refers a region in the province of Heilongjiang called Beidahuang (Hanzi: 北大荒; lit "Northern Great Barrenland") which is still serving as a major agrarian spot in modern China.
Trivia
Dahuang is a reference to Northeastern China which is known for its fertile soil in frigid environment that leads to its agrarian activities and its heavy industries.
Nevertheless, Dahuang's rice terraces and its cultivation of rice crops make it more resembling to the Minnan region, i.e., the province of Fujian, and Fujian in particular is significant in the history of Chinese agriculture:
During the Song dynasty at around as early as the eighth century, an early-maturing and drought-resistant rice from Champa was introduced to the Fujian region. After a severe drought in the lower Yangtze and Huai River regions in 1012, Emperor Zhenzong came to know the properties of this rice and sent envoys to Fujian to procure thirty thousand bushels of seeds and distribute them to farmers in the drought areas, with instructions as to the proper method of cultivation. Thus from 1012 onward, Champa rice marked an agricultural revolution in China.[1]