In the Han Dynasty, millet (millet) was collected as military food. Besides millet, there were other kinds, such as rice, wheat, beans, melons, glutinous rice, taro, five-color millet (yellow rice, sorghum, etc. ), and Yuan Mai (highland barley).

The most important things are millet and rice.

There are three to four stones of millet in an acre of land in Korea, which is converted into today's market Jin, and the annual millet harvest is about 300 Jin per acre.

There are great differences in planting rice in different years. According to agricultural records, in good years, fertile fields harvested 19 stones, nakata harvested 13 stones, and thin fields harvested 10 stones. If the highest yield of phosphorus and potassium fertilizer is applied together with seeds, 30 stones can be harvested per acre (recorded as 100 stones in Song Dynasty).

According to the calculation of ten stones per mu of thin land, the rice yield per mu in Han Dynasty is about 900 Jin per mu in today's cities.

According to the calculation of 13 stone collected by Nakata, the yield per mu of rice in Han Dynasty is close to that in today's cities.

According to the harvest of Nineteen Stones in Mei Tian, the yield per mu of rice in Han Dynasty is about 1700 kg in today's cities.

The data of Nineteen Stones in Mei Tian is very close to that of modern experimental fields.