Become a feudal king from today

"Well, are you making soil fertilizer?"

The indescribable smell made Zhao Xu pinch his nose.

Zhu Tuo remembered that there was still urine in the earthenware pot on the stove, and couldn't help but smile.

After the King of Yan went to Feihu Pass, the students were just reciting the textbooks in an orderly manner.

But as they recited, they found that there were many interesting things in the book, and it seemed that they could make them by themselves.

So they reclaimed a piece of land in the academy.

Then they loosened the soil and sowed seeds according to the textbook.

Then, when it was time to apply fertilizer in the past two days, they remembered a kind of soil fertilizer in the textbook.

According to the textbook, this fertilizer can increase the yield per mu.

The method of making it is to heat 50 kilograms of human urine to 20%, put it into a clay pot and steam it to 10%, and stir it with 2 kilograms of cooked gypsum, dry it and crush it, which is called urea gypsum.

When applying fertilizer, you only need to apply 10 kilograms of base fertilizer per mu, and 5 kilograms of topdressing in the later stage.

"Yes, Your Highness, I want to try it. If this kind of soil fertilizer can increase the yield per mu, it will be a blessing for the people of King Yan." Zhu Tuo said.

The current yield of farmland in Dasong is only about two stones per mu.

According to the new measurement system set by King Yan, it is about 240 kilograms.

As long as this soil fertilizer can increase the yield by 120 kilograms, it means that the yield of farmland in Yanzhou has increased by one third.

Zhao Xu nodded, as everyone knows.

The high yield of contemporary agriculture depends on two important factors.

The first is chemical fertilizer, and the second is high-yield seeds.

He can't cultivate these high-yield seeds at present.

Chemical fertilizers are not as advanced as those of today.

However, he can still make some soil fertilizers that can replace chemical fertilizers.

Therefore, he included this urea gypsum in the textbook.

This thing is an alternative method that experts came up with in the early days of the founding of the People's Republic of China when there was no industrial fertilizer.

Among many fertilizers, nitrogen fertilizer is the main fertilizer to promote yield increase, such as urea.

This urea gypsum is naturally equivalent to a simplified urea fertilizer.

However, Zhu Tuo and his team obviously used the wrong material.

This gypsum is not lime, so he said: "The idea is good, but the wrong material is used. This gypsum is not lime."

After saying this, all the officials were stunned.

Zhu Tuo's face turned red, and he said: "Both have the word stone, and I thought they were the same thing."

Zhao Xu smiled and shook his head. Gypsum is calcium sulfate, and slaked lime is calcium hydroxide.

But now he explained to the officials, and it was not convincing.

So he said: "Put this thing aside for now, and I will find gypsum for you after a while."

The reserves of gypsum are very rich.

In contemporary Xingtai, Hebei, there is a large mine of 700 million tons.

Its corresponding location is Dai County in Yanzhou, which is where white sand is produced.

However, this mine also needs to be found and mined.

"Yes, Your Highness." Zhu Tuo and other students felt a little complicated.

They were fumigated by the smell of urine for nothing for a whole morning.

Let the students put aside the matter of urea gypsum for the time being, and he also randomly selected some students to recite the content of the textbook.

Then he said to Zhu Tuo: "It is better to have no books than to believe in them. The government office should also consider sending these students to the countryside to use what they have learned in the textbooks to teach the people how to carry out reasonable farming, animal husbandry, and participate in water irrigation projects. In short, it is practice."

"Your Highness is right. I will talk to Liu Wangfu about this matter and give these students the opportunity to participate in government affairs." Zhu Tuo said.

The students were all excited when they heard it.

They were bored enough staying in the school all the time.

And they also wanted to take the opportunity to show off what they learned.

After staying in the government affairs school for a while, Zhao Xu returned to the palace.

Before leaving, he asked Zhu Tuo to call Liu Fu when he returned.

He would not go to the military school. Now that the war has just ended, Chang Wei and others probably have a lot of affairs.

Just after arriving at the palace, Zhao Xu sat down in the study room for a while, and Liu Fu came over.

"Your Highness." After entering the study room, Liu Fu bowed.

Zhao Xu looked at Liu Fu and said thoughtfully: "This king wants you to set up a new organization called the Mineral Exploration Department."

"Mineral Exploration Department?" This word is easy to understand. Liu Fu said: "Your Highness, it seems unnecessary to set up a special government office for mineral exploration. After all, this is another expense."

Zhao Xu glanced at him, "What have you learned in the Political Affairs School? Agriculture is the foundation of the world, but mines are the foundation of industry and commerce. There is a huge amount of wealth buried in the land under your feet, which can't be compared with a little expense."

Liu Fu was also very aggrieved, "Your Highness, it's not that I don't understand, but all the mines that can be found in Yanzhou have been found, and they are currently recorded in the government office."

"This king tells you that the current record is only a very small part. What this king wants is to find all that can be found." Zhao Xu said, "Don't talk nonsense. The officials of the Mineral Exploration Department will be selected from the outstanding students in the school through examinations. Later, this king will give them some things individually."

"Yes, Your Highness." Liu Fu responded.

He was a little surprised. How did the King of Yan know that there were so many mines underground in Yanzhou.

This idea flashed through his mind.

In the end, he decided not to think about it. After all, there was only one sentence, the King of Yan was really unfathomable.

Waving his hand, Zhao Xu asked Liu Fu to go back.

The war was over, and it was time to focus on development.

After all, the economic base determines the superstructure.

How could you walk for three days and three nights without two steamed buns in your arms?

Thinking of this, he searched hard in his mind.

On paper, all the mineral resources in the contemporary Hebei area, which is now Yanzhou, are listed.

Moreover, a mineral distribution map was drawn by comparing the contemporary landscape information with that of Yanzhou.

After all, although history has changed, some geographical indications have existed since ancient times and cannot disappear or appear out of thin air.

Relying on these geographical indications, it is easier to find the location of these minerals.

After these mines are found, he can use them whenever he needs.

Of course, in addition to the location of the mine, he had to compile a separate teaching material.

This textbook includes the appearance of various types of ores.

It is for the convenience of people looking for minerals.

The teaching materials will be handed over to the people in the Prospecting Department. This is what he told Liu Fu to teach these students specifically.

The next few days.

While he went to the school to explain to the students their doubts, he was drawing a map of Yanzhou's mineral resources in his study.

Day six.

A group of imperial guards from the capital arrived at the palace.

Also coming with him was a eunuch named Xiao Haizi, who brought Zhao Heng's imperial edict.

After receiving the order, Zhao Xu ordered Feng'er to prepare some gifts for the group.

However, he was rejected by the young eunuch who came.

According to the young eunuch, after Tong San's incident, the palace was closely investigating and they did not dare to mess around.

After handing over the imperial edict, they set out to return.

After the group of people left, Zhao Xu unfolded the imperial edict, sighed quietly, and read: "Respect for relatives."