use of fertilizer

crop rotation
use of seedlings
improved irrigation
new types of plows

The above list describes agricultural improvements under the
A.
Sui Dynasty.
B.
Sung Dynasty.
C.
Yuan Dynasty.
D.
Ming Dynasty.

1 answer

The agricultural improvements listed, such as the use of fertilizers, crop rotation, use of seedlings, improved irrigation, and new types of plows, are characteristic of advancements that occurred during the B. Sung Dynasty (also known as the Song Dynasty). This period saw significant agricultural innovations that helped increase productivity.