Daqian had a large amount of land suitable for cultivation, as well as mines that produced iron tools, and tens of millions of subjects, so he was able to occupy this land and drive the barbarians to assimilate.

But one day, when the development of the land stops, more food needs to be grown on a piece of land. If one day Daqian has a population of hundreds of millions, it will be such a powerful country.

Ox ploughing, iron tools, manure, and a more accurate calendar were all ways to make agriculture progress. With more food, more people can be fed.

The Great Cadres will be more stable, and then rely on the strong national strength to annex the Quartet.

"Now there are very few wars in Daqian, the people can be regarded as living in peace, and the land is vast, if the continuous cropping system is successful, the population must increase faster!"

"If the continuous planting system is really successful, you will all go down in history!"

"In ancient times, the Suiren clan passed on the fire, the Chao clan built a house, and the Shennong clan tasted a hundred herbs, and it was the generations of sages who overcame thorns and thorns to open up a way forward for the people of Zhuxia."

Outside Luoyang City, Shanglin Yuan, there is a specially divided manor here, Wang Ke and Wang Ce came here under the protection of Yu Linwei.

In the middle of the manor, the fields were groomed and neatly groomed, and a group of people were gathered in the center, half of them dressed in short brown linen clothes like old farmers, and the other half were younger.

If the ministers of the DPRK and the Central Government see it, they will find that the vast majority of them are actually adult children of the clan.

Dust and grass clippings flew and fell on them, but no one cared about this, the children of the peasant family were used to this, they were originally working in the fields, and they were not so particular, as for the children of the clan, they would also be required to participate in labor since childhood, these are compulsory courses.

"Your Majesty!"

"Head of the house!"

Seeing Wang Ke and Wang Ce coming, everyone bowed down and saluted, and then a group of people looked at the stone grinders that were constantly rolling around on the drying field.

The harvested mushrooms have been flattened and dried, and now it is time to grind out all the beans. With a crackling sound, the beans in the pods rolled to the ground.

The dust was flying, the sun was red, but no one cared about it. Wang Ke is also a person who knows agriculture, and immediately asked: "How much is the yield per mu of land now, has the fertility of farmland weakened after the use of continuous cropping system, and will long-term cultivation be barren and need to be fallowed?" ”

Wang Ke asked about the key points one after another.

"Your Majesty, these lands have been planted for the fourth year, and they are not fallow every year, and after each planting, manure is applied, and now it seems that the fertility of the land has not weakened."

"Really?" Wang Ke hurriedly asked.

"Your Majesty, we have found that the land that has been cultivated in the previous year and the millet is planted again in the second year, and when the harvest comes, the yield of corn is much higher than that of the land that has not been cultivated."

"So we started to alternate the cultivation of soybean and millet and to develop better seeds to test the cultivation season. Finally, I began to try to grow corn in the spring, and after the millet was harvested, I planted soybean. This makes it possible to farm twice a year. ”

"At the beginning, we were also worried that the land was not fertile enough for continuous cultivation, and after the adjustment, although the grain yield was slightly reduced, the fertility of the land could fully support continuous cropping."

Just as everyone was talking, the mushrooms on the open space were finally milled, and immediately everyone worked together to put away all the beans that had just been milled, and then weighed them.

After some weighing, a total of more than 33 stone of beans were harvested on the entire 20 acres of land in front of me. Dozens of stone beans were piled up on the drying field, and the eyes of everyone who watched were bright.

Wang Ke also checked the corn planted this year on these lands, and the numbers on them clearly recorded that the yield per mu was as much as two stones, six buckets to seven buckets. In this way, if one acre of land is cultivated twice a year, you can harvest about four stones and three buckets of grain.

In this way, the yield per mu of land has directly increased by more than one-third.

If such a great improvement is spread throughout the country, the grain of the Great Cadre will increase by millions of stones in a year, and how many more people can be fed with so much grain?

It can be said that the strength of Daqian has improved by leaps and bounds.

"Your Majesty, although the continuous planting system has been successful here, it does not mean that it can be promoted in all parts of the world, you are familiar with agriculture, and you also know that the climate is different between the north and the south. The millet is planted in the north and the grain is planted in the south, and the continuous cropping system suitable for the north is not necessarily suitable for the south. ”

Li Yu, the leader of the contemporary peasant family next to him, saw Wang Ke's excited appearance, and hurriedly stepped forward and said, he was also worried that if Wang Ke was excited, regardless of the climate in the north and south, he would order the promotion of continuous planting, and there would definitely be problems in the south at that time.

Hearing this, Wang Ke immediately calmed down, and then said, "Thank you Li Qing for reminding me, otherwise I will make a big mistake." ”

"Your Majesty is wise, even if your subordinates don't remind you, you will think of it." Li Yu didn't take credit and said respectfully.

"Hahaha, Li Qing has made great contributions to the invention of continuous planting technology this time, and I have been able to fill the granary in the world, and today I will give Li Qing as Anyang Hou and 3,000 households!"

"Minister Li Yu thanks Your Majesty!" Li Yu hurriedly bowed and paid respects.

"Other people according to the level of merit, after the prince Wang Ce and Anyang Hou Li Yu reported, and then talk about meritorious rewards, everyone has great merit in this trip, and they are all rewarded!" Wang Ke said happily.

The crowd also thanked them.

"Li Qing, now that the millet continuous planting system has been successful, Qing is responsible for promoting it."

"Your Majesty, the minister has compiled a book of millet seeds, and at the same time selected people to study, and when their training is completed, it will be promoted to the world!"

Wang Ke nodded and was very satisfied.

"Your Majesty, the minister has another request!" Li Qing said again.

"Let's talk about it!" Wang Ke said.

"Your Majesty, rice is planted in the south, since the north can be planted with millet and soybean, presumably the south also has continuous planting suitable for the south, and please let your majesty let your subordinates go to the experiment!"

Wang Ke said with a smile: "I have already thought of this, Li Qing can go if he wants, and now that they are experimenting in Jinling, Qing can go and guide." ”

"No!" Li Yu hurriedly bowed his hand.

"But Qing still has to train the millet seed first." Wang Ke said with a smile.

The emergence of the agricultural continuous cropping system greatly increased the grain output of ancient China, and the increase in grain also caused the population of Qianguo to grow rapidly.

In the classical period, the size of the population represented the strength of the country. This allowed the Qianguo to gain a sufficient population and provide sufficient soldiers, and the surrounding countries and the Xiongnu in the north could no longer compete with each other.

It was not until the 17th century that the agricultural method of continuous cropping appeared in Western England.

Objectively speaking, the continuous cropping system is another agricultural revolution after ox ploughing and iron farming tools, which promoted the development of human civilization and was a key step in human history, which made Daqian the hegemon of the East. -- General History of the World, History of Asia, The Impact of Productivity on the Development of Human History

(End of chapter)