Northern Song Agricultural Technology

Timeline

1. c. 960–1020Jianghuai region · JianghuaiEarly Northern Song inherited Tang and Five Dynasties agricultural tools, promoting iron curved-shaft plows, seed drills, and chain-pump irrigation in the Jianghuai region; Taizong built ponds and rewarded land reclamation, while Champa rice moved north from Fujian and Guangdong, creating conditions for double-cropping rice in Jiangnan.
2. 1031–1040Kaifeng Prefecture · HenanThe Renzong reign issued farming promotion edicts and reduced land taxes in disaster areas, organized compilation of agricultural books, and promoted manure use and crop rotation; in the 1030s Jiangnan polder development accelerated, with dikes and ponds around Lake Tai forming a dense water network that significantly raised per-mu yields over the late Tang.
3. c. 1050–1127Suzhou · JiangnanIn the mid-to-late 11th century Jiangnan developed rice-wheat or rice-rice double cropping, with Suzhou and Huzhou becoming grain export centers; Grand Canal grain transport carried surplus north to the capital, combining agricultural advances with commercial circulation to support Northern Song cities of a million population.