The ministers didn't care about this, in their opinion, the conditions on this train were limited, and it was normal not to prepare food, not to mention that the taste of the meal was not too bad.

"In the future, there will be a dining car on this train, and everyone can eat in the dining car, of course, if you bring your own dry food, it is also okay, for ordinary people, the food on this train must be relatively expensive, and they may not be willing to eat."

"You just have a good idea in your heart, and if you think that the circulation of these people and materials is more important than making a profit, then you can do it."

"But this will also expose a problem, that is, will the large flow of population cause the local people's land to be unable to be cultivated? This choice is a bit difficult, if a large number of promotion and construction, the required manpower and material resources must be extremely high. ”

"Of course, people can earn more money with this kind of promotion, but didn't you also say it? Datang's red line of cultivated land and grain cannot be shaken, which also requires a large number of people to invest in farming. ”

"I'm afraid I can't take care of the two, at least with the current population of Datang." Li Shimin looked at Li Ke and asked.

Li Ke scratched his head, I have to say that the question raised by Li Shimin will also really happen, Li Ke has never worried about the population, because he is used to the huge population resources of the motherland in later generations.

But the current Datang has not yet reached that point.

Thanks to the current land policy and household registration policy of Datang, the enthusiasm of the people to register their children is constantly increasing, because as long as the household registration is registered, part of the subsidies and land distribution will be prioritized.

Therefore, almost all the children of the people have gone to the household registration.

This allowed Datang to complete a census last year, and the current population growth rate is about 2.3%.

Last year, the population growth rate of Datang was about 600,000, according to the population growth rate of 2.3%, plus Xue Yantuo and Murwei integrated into Datang, which made the total population of Datang reach more than 30 million.

"I don't want to stop there, although maintaining the food red line and arable land is a problem, but we can solve it in other ways." Li Ke thought for a moment before he spoke seriously.

"Other ways? What method? Li Shimin and the others were a little puzzled.

"So that a family can plant hundreds, even thousands, tens of thousands of acres of land." Li Ke said seriously.

"How is this possible?" Everyone was stunned, you must know that Datang's current 100 acres of land, if all the grain is grown, it is not easy, and some of the cultivated land needs to be planted with other cash crops, such as hemp, mulberry, etc.

Previously, the court of the Tang Dynasty had regulations on this aspect.

For example, in the Guanzhong Plain, and now Henan Prefecture, if the wheat is ripe, if it is not harvested within a few days, the wheat will even sprout directly on the ears of wheat, then the wheat will be destroyed.

Although it is not impossible to eat, it is nothing more than unpalatable, but this is not a problem for the people, after all, they didn't even have to eat it before, but it is impossible to keep the seeds.

1,000 acres, 10,000 acres? It's impossible to think about.

"Nothing is impossible, this steam engine can drive such a huge railway, what if you put tires under it and then drive the ploughshare behind it?" Li Ke raised a question.

Everyone was stunned.

It's a path they never envisioned.

"In the vast plains such as the Guanzhong Plain, Henan Prefecture, and the middle and lower reaches of the Yangtze River, if such a machine is made, it is possible to cultivate dozens or even hundreds of acres of land in a day. And in the case of harvesting, is it also possible to invent a harvesting machine and directly replace manpower with a machine? Li Ke asked with a smile.

Duan Lun next to him didn't say a word, he directly took out a pen and paper from his arms and began to record, as the secretary of the Ministry of Industry, he will definitely be responsible for these things in the future, of course, it will be recorded.

This is the path they never envisioned, but it is the direction in which Datang will move forward in the future, and this possibility is extremely high.

After all, this huge steam engine can even drive such a terrifying train, if its size is smaller, it is not impossible to install wheels to drive the ploughshare, right?

"Our shortage of manpower will take at least ten years, or even decades to appear, but after more than ten years, decades of development, we may not be able to develop such a cultivation machinery, so we will adjust things in the future." Li Ke said with a smile.

Li Shimin's words reminded Li Ke that the current Tang Dynasty may also embark on the road of the big farm of Laomei in later generations, and there is no such road in China in later generations, because a large number of people need self-cultivation and need fields.

It is impossible for land to be concentrated in the hands of a small number of people, but in fact, on the eve of Li Ke's crossing, a large number of people were concentrated in the cities, and almost all of the people in the countryside were already over forty years old.

When this group of people dies, the next batch of large quantities of land will definitely be cultivated collectively.

At least before Li Ke crossed over, several of his elementary school classmates had already formed a collective cooperative in their own village, and began to rent all the land owned by the entire village and began to go back to mechanized farming.

And now Datang has no shortage of arable land.

In the future, there will be more and more arable land in Datang, and the population of Datang will grow, even if it reaches the population of later generations, I don't know how much land it occupies.

It is not impossible to develop mechanized farming.

The experience is different, and the path taken in the end is not necessarily exactly the same.

Otherwise, Li Ke pondered and pondered, and then pit a horse family to spend a huge amount of money to buy a horse of agricultural machinery, so that they can try large-scale mechanized farms first? After all, those who have the strength to buy and rent a large amount of farm land at that time are these families.

Li Ke believes that there must be families who have a soft spot for land, so let them try. earned, proving that this path is feasible, and laying a lot of experience for subsequent development.

It's a loss, anyway, it's not the court that loses, it's the family that loses, isn't it good? In fact, the loss is estimated to be a loss, at most it is less earning, and the earning is slow, but it is also stable.

"Well done. Just have an idea. Li Shimin nodded with satisfaction, very good, if you continue like this, who will be able to take over the throne in the future? Not to mention prestige or anything, who can take these things?

Time flew by in the chats of the ministers, and when more than three hours after they boarded the train, Chen Cang - arrived!

"Now everyone is about to arrive at Chencang Station! In other words, we have arrived in Chencang from Chang'an, and we can take a day trip to Chencang. When Li Ke's smiling words sounded, Li Shimin and all of them were in a trance...... In less than two hours, they had crossed a distance of more than three hundred miles!