When Yingzheng was young, his suspicion was not so serious.

At least at this time, he believed Li Yunze's words very much, and also arranged for people to start collecting and making the corresponding materials.

Then, he pulled up his robe and led the ox in front, and Li Yunze helped Quyuan plough in the back and began to turn the ground in a test field.

By the way, the technology of accelerating the domestication of cattle into cultivated cattle by putting a ring on the nose of the cow is naturally provided by Li Yunze.

After turning over an acre of land, Ying Zheng, who personally felt the effect of Quyuan plow, took the honey water handed over by Zhao Gao and drank it, and said happily, "Taifu, with this thing, the number of new fields reclaimed by Daqin will inevitably increase greatly." ”

In fact, there is no shortage of land in these years, not even fertile soil.

What is really lacking is the people who cultivate the fields.

There is a limit to the number of acres that a strong laborer can take care of, and in the absence of large animal power, ten acres of land per person is the standard, and fifteen acres is the limit state.

Of course, this is intensive farming, and the kind that directly sows the seeds and doesn't care about the harvest doesn't count.

Among them, the most important factors affecting efficiency are ploughing and sowing in the spring, and harvesting grain in the autumn.

The amount of land that can be cultivated during spring ploughing is directly the most basic harvest.

After all, the land must be ploughed thoroughly before it can be cultivated well.

Usually you have to go at least a foot deep.

In this era of low productivity, the poor Qiantou had never seen any mechanization, and even ploughing cattle were a rarity.

They usually use their own hands, wielding wooden hoes, hoeing the ground one by one.

One acre of land may require a strong laborer for a day of hard work.

But at this time, I used this curved plow, and it only took a long time to finish it.

This is the increase in efficiency, which allows Daqin to cultivate more fields.

There are more fields, and there is more natural harvest.

The harvest is more, and naturally it will be able to feed a larger population.

With a larger population, there are more people who are provided with all kinds of supplies and conscription, and of course, military service.

How did the so-called national strength come about, that's how it came about!

Although Yingzheng is not very old, he is very clear about this matter.

Looking at the excited Ying Zheng, Li Yunze smiled and beckoned the Mo family disciples on the edge of the field, "Get the car." ”

Ying Zheng, who drank the honey water, asked puzzledly, "Taifu, what is the car?" ”

"The three major items of farming, ploughing, sowing and harvesting."

Li Yunze said earnestly: "Quyuan plough and cattle snatched from the grassland have barely solved the problem of insufficient cultivated land reclamation capacity. It is equally important to grow grain after arable land. ”

Cultivation in primitive times was direct slash-and-burn farming, a fire burned out of a piece of land, and then the seeds were scattered as if they were sprinkled with water, and then they were left alone.

The result of this method of cultivation is naturally a 'gratifying' harvest at harvest time.

That is, it is more than the seeds that are thrown down, and the harvest is three or five buckets more.

Later, someone finally came up with the idea of intensive farming, in which all the cultivated land should be ploughed, and when the seeds were planted, they would no longer be thrown, but grain by grain into the pit.

If plowing the land with a hoe was hard work before, then sowing seeds is hard work.

bending over to sow seeds one by one, it is really that you can't even straighten your waist after going home.

Improving the efficiency in this area will naturally improve the harvest.

Ying Zheng, whose interest had been thoroughly aroused, walked around the field with his hands behind his back, not caring at all that his feet were already full of mud.

As a king, he encountered a natural disaster, and naturally knew what the production of grain meant.

"Taifu, this cocoon car"

"Don't rush."

Li Yunze waved his hand: "I'll talk about it later." ”

Fortunately, the disciples of the Mo family didn't let Yingzheng wait too long, and they moved a cocoon over with a lot of effort.

"This cocoon is made up of three cocoons, which can be called three-legged cocoons."

Li Yunze explained to Ying Zheng, who was circling around the cocoon, "You see there are three ditch openers down here, so they are called three-legged cocoons." When sowing, a cow pulls the cart, and the cocoon feet are ditched and sown on the leveled land, and at the same time it is covered and suppressed, which can be called a number in one fell swoop, saving time and effort. ”

Hearing this, Ying Zheng asked with a smile, "Taifu, how high can the utility be?" ”

Li Yunze thought for a while and said, "If you have such a unit, you can almost cultivate one hectare a day." ”

'Hiss~~~'

As soon as the words came out one day at a time, there was an amazing inhalation all around.

This effect is really terrifying.

How much can you do in a day by bending down to sow seeds? Three or five acres?

Even if a person can bear it, his waist can't stand it.

"Whether it's a zigzag plow or a columbo, it's an application of physics." Li Yunze never forgets his responsibility as a teacher, and still reminds Ying Zheng that "mathematics is the foundation, physics and chemistry are practice." Don't be bored, these are the real skills. ”

Ying Zheng naturally nodded again and again, and then hurriedly beckoned Zhao Gao and others to quickly put the cocoon on the ploughing ox, so it was directly displayed on the spot and felt it for himself.

There is nothing magical about the car, it is just a wooden tool, and Li Yunze has also made some improvements, such as replacing some parts with iron, so as to reduce the wear rate and improve the service life.

Pour the grain seeds into the bucket, with the drag of the ploughing ox, the cocoon foot can also be said to be a triangular ploughshare, deep into the ground several inches deep overturned, through the leaky seed hole behind the triangular ploughshare, through the control of the seeds into the deep soil one by one.

Although it is only the most initial mechanical equipment, its utility ratio is the ceiling of this era.

Historically, the columbus would have appeared more than a hundred years later, and the efficiency of the entire Middle-earth farming system was ten times more than that of Europa, which was still cultivating at this time!

Such an advanced civilization was destroyed, enslaved, and given away to outsiders under the invasion of generations of barbarian tribes!

Li Yunze may not be very concerned about other things, but for the matter of fighting the barbarians and exterminating the wild boar skin, it is really a career to do.

When Yingzheng had finished experiencing the powerful sowing efficiency of the cocoon, Li Yunze stepped forward and asked, "How?" ”

"Good, good, good!"

Three good in a row, fully expressing Yingzheng's joyful mood at this time.

With food, he was able to feed more armies and conquer larger territories.

The power of fertilizer, he has not yet felt.

But the power of physics, especially practical physics, has been experienced by himself.

This kind of power makes Ying Zheng feel intoxicated.

"Taifu."

Yingzheng, whose face was flushed red because of his high emotions, eagerly asked, "The artifact of ploughing land and sowing seeds, the widow has already seen it." And what about the harvest? ”

Harvesting this kind of thing, Li Yunze's first reaction is naturally a combine harvester, as long as the engine sounds, it is really harvesting in pieces.

Shaking his head, he threw out such impractical things, and motioned to the Mo family disciples on the ridge to take the sickle.

Shoved the sickle into Yingzheng's hand, "When you harvest, use this." ”

Looking at the sharp agricultural tools made of steel, Ying Zheng's first reaction was "Such a good knife, why not equip the army?" ”

Daqin is like this, a country with an army, everything thinks about the army first.

Even the king of Yingzheng, when he saw a high-quality sickle, he immediately thought of equipping the army.

"Recently, there has been an improvement in smelting technology, and both yield and quality have improved." Li Yunze explained with a smile, "There will be better equipment in the army, and the king doesn't need to worry." ”

Hearing this explanation, Ying Zheng finally turned his attention back to the scythe.

"It's for harvesting, and it's very efficient."

Li Yunze did not explain much about the utility ratio of the sickle, but focused on its quality: "This is forged by a new smelting method. The use of coking coal as fuel greatly improves the quality of ironware. Reduced impurities, especially sulphur content, improves its toughness and is no longer so brittle. By the way, the proportion of carbon content, do you remember what you were taught? ”

"Yes." Ying Zheng nodded vigorously, "More than two cents of carbon is pig iron, and less than five millimeters is wrought iron." Only between pig iron and wrought iron can it be steel."

The words spoken by the master and apprentice were incomprehensible to all the people around them, except for those Mo family disciples.

It can't be said that I don't understand it, but I can only say that I understand it but I don't understand the meaning at all.

"With enough good steel, you can make more useful tools." Li Yunze motioned to the cocoon and sickle on the side, "so as to improve production efficiency and get more materials." ”

However, Ying Zheng's understanding is, "Isn't it to create more powerful weapons and armor?" ”

Li Yunze also rolled his eyes when he said this, "In the future, don't mix with those generals all day long, you are the king, and the things you need to care about are not only military." ”

In front of Li Yunze, Ying Zheng naturally guaranteed in a loud voice.

But when Ying Zheng returned to Xianyang City to deal with government affairs, and came back to class again after a month, he threw a surprising question to Li Yunze.

"Taifu, you taught me the ratio of gunpowder, and the effect of saltpeter, sulfur and charcoal, and the widow wants to know what will happen if you change the ratio?"

"Change the ratio?" Li Yunze looked at him in a little surprise: "Why do you say that?" ”

"There is a disciple of the Mo family, who specializes in making gunpowder, and his name is Wuhe." Ying Zheng responded, "He said that changing the ratio can reduce the speed at which the energy released by combustion is not so violent, and can be used for other purposes." ”

These words successfully aroused Li Yunze's interest, and he took the time to ask, "What is the use?" ”

"He said that when he used to open mountains to build roads and open mountains for mining, he saw that the flying gravel and broken wood were very powerful, so he thought about controlling the power of gunpowder and binding it in a container, so as to push the stones and even iron tools to fly out quickly."

Listening to Ying Zheng's description, Li Yunze already understood in his heart.

No matter what era there are smart people, as long as they are given a chance, they can be drilled through even the sky.

What Yingzheng is babbling about here, that's artillery!

(End of chapter)