Why is agriculture in the Song Dynasty so developed?

First of all, to understand the development of agriculture in the Song Dynasty, the Song Dynasty, the great water conservancy, large areas of open land, and focus on the improvement of agricultural tools, agriculture developed rapidly. The emergence of new tools also allowed crop yields to grow dramatically. Agriculture also developed rapidly in the Yangtze and Pearl River valleys. In feudal China, which was based on agriculture, the impact could be imagined. It would have greatly boosted the development of the small feudal peasant economy, which in turn boosted the entire national economy, which in turn boosted demographic, political, and military development.

1. Economically, agriculture is guaranteed, food is guaranteed, the people will choose to enter the towns and cities to seek more, other economic areas of the Song Dynasty is not weak. This promotes the development of handicraft business, so that the Song Dynasty business presents a prosperous scene.

2. Militarily, the Song dynasty since the founding of foreign invasions, the development of agriculture greatly increased the military food supply, properly eliminating the worries of the army's aftermath.

3. Culturally, since the Song Dynasty, due to the improvement of productivity, the city has been greatly developed, and at the same time, the culture of the citizens also flourished. Bianjing in the Northern Song Dynasty was the political and cultural center of the country at that time, and the civic culture was quite developed.

4. Demographically, the number of people in the Song Dynasty exceeded 100 million, and the labor force increased greatly.

(The above is purely personal opinion, if there is an error, please point out in time, thank you! May not be comprehensive, please forgive me.)