On this morning, a two-wheeled light carriage came to Shitaizhuang, and now the people in Zhuangzi no longer feel that this kind of two-wheeled carriage driving behind the car is unique to the owner of the village, after all, all the dignitaries in the capital often have this kind of fast, and very flexible small carriage. However, because of the production volume, the vast majority of people are queuing.

As soon as the carriage drove into the Zhuangzi, it stopped straight in front of the three-entry mansion in the village, and then the coachman got out of the car and buckled the door knocker, and after a while, the door flashed open, and then an elderly porter looked at the people outside the door.

"Is Shi Gongzi at home?"

Glancing at the old man behind the coachman, the porter shook his head and said.

"Unfortunately, our son-in-law is in the Zunhua Iron Factory these days."

"At the Zunhua Iron Works?"

When Ma Ziqiang heard this, he was surprised.

"How did you go so far?"

"Mr. Hui, this time there has been a drought in Baoding and other places, and the pressurized water wells cast by our family are in short supply, in order to prevent the people from suffering from the drought, Gongzi specially went to the iron factory to ensure the iron production of the iron factory."

Of course, all of this is just a high-sounding reason, which sounds quite lofty, even if it is written in the newspaper, it can also show that Shi Yiwen's heart is in the people, and he can naturally get a good reputation.

After getting into the car, Ma Ziqiang couldn't help but sigh when he left Zhuangzi.

"It's rare to have a pure heart...... Dacheng, how many days will you go to Zunhua? ”

"Back to the master, our light carriage is fast, and it will take two days at most."

"Then let's go to Zunhua."

For Shi Yiwen, who was far away in Zunhua, of course he didn't know that there was a cabinet assistant who was rushing to Zunhua in his own light carriage, and he had been busy in the iron factory for the past few days, busy renovating the coke oven in order to extract the crude ammonia in it.

In the past, by-products such as ammonia in coking gas, in addition to coal tar, were often directly emitted because there was no way to use them. And now Shi Yiwen, who intends to enter the "fertilizer industry", naturally will no longer sit back and see so much waste of "high-quality fertilizer", so he was busy as soon as he came to the iron factory.

Compared with the New Year's meeting, the current Zunhua Iron Works has built another blast furnace, and every day the sky over the iron works is filled with yellow-black smoke, that is, the smoke from the blast furnace of the iron factory, and the smoke emitted by the coke oven. In the past few days, on the ventilation duct of the coke oven, there are several cast iron pipes with a diameter of 6 inches, these iron pipes are cast in the iron factory, elongate about 9 feet upward, and extend to the cooling pool with water built with bricks, and eight connected thin pipes are installed in the cooling pool, one end of the thin pipe is connected to the thick pipe, and one end is stretched out to release the exhaust gas, and on the pipe in the cooling pool, there is a small opening connected to the fine press, and the thin pipe extends out of the cooling pool, and the ammonia water flows out of the pipe after dissolving in the water.

When the ammonia water flowed out, there was a strong smell of rotten eggs in the air, and Xu Guangqi frowned again and again.

"It smells so bad!"

Not only did he feel stinky, but even those workers choked and couldn't breathe, but Shi Yiwen breathed the familiar "chemical smell", but he was quite excited. Although the nitrogen content of this ammonia is very low, from the perspective of future generations, this industrial production is highly polluting and inefficient, after all, the nitrogen content of ammonia is too low, and even contains a large amount of tar, which is seriously exceeded. But in this day and age, it's one of the best fertilizers that can be made.

"Guangqi, that's the taste, don't underestimate this water, it's this ammonia water plus the sulfur slag left over when refining sulfur, you can get ammonia sulfate, this is a good fertilizer, if my estimate is good, 30 to 40 catties of ammonium sulfate can be put out in every 100 catties of sulfonous slag. The application of these ammonia sulfate per mu is about 15 catties, which should increase the yield by about 4%. ”

Shi Yiwen looked a little proud after explaining, and then he commanded the workers to start producing "ammonium sulfate" by the soil method. The production method of this ammonium sulfate is the popular soil method in the fifties and sixties, which is to first calcine, oxidize and filter the sulfur slag, then add ammonia, and then concentrate and precipitate. The production method is very simple, and the raw materials are waste from iron and sulfur plants.

A few hours later, when the first batch of earth-made ammonium sulfate filled with a choking smell was made, although it was not in large quantities, Shi Yiwen still looked quite excited, and he looked at Xu Guangqi and said.

"Look, you see, this ...... It's the world's first pack of fertilizer! ”

When speaking, Shi Yiwen's tone seemed a little excited.

"With chemical fertilizer, two harvests a year is no longer a legend, and sufficient fertilizer can increase the harvest of the people a lot, just such a small package of fertilizer, is equal to tens of thousands of catties of soil fertilizer."

As soon as his words fell, he heard a sound of surprise behind him.

"Tens of thousands of catties of soil fertilizer? What is it that is so magical? ”

Following the words, Shi Yiwen saw an old man walking over, that person was a little familiar, as if he ...... I've seen him, but what's his name?

"Zhiyuan."

Walking in front of Shi Yiwen, Ma Ziqiang waved his hand and said.

"When I bothered you to treat me last year, I didn't thank you properly, but it's really mine."

Oh, it's him.

After he reminded him like this, Shi Yiwen remembered that it seemed that when he first arrived in the capital last year, it was the old man in front of him who took a letter and asked him to see a doctor. And the funniest thing is that Shi Yiwen doesn't even know the name of the person who wrote the letter - the one who had a relationship when he was in Huai'an. I didn't think that he was getting better, and he introduced the patient.

Good guys, saved one, and here comes another.

Yes, it's just pneumonia, and a few Archie will be done. He found Zunhua here, could it be that he is sick again? This is really a mess.

But the question is...... What's his name?

"That, old man......"

Shi Yiwen just opened his mouth here, and Ma Ziqiang hurriedly explained.

"Oops, I was in a hurry last time I came, and I forgot to introduce myself, my surname is Ma, my name is self-reliant, and the font is ......"

Listening to Ma Ziqiang's self-introduction, Shi Yiwen was stunned.

Ma Ziqiang!

It's him!

He is actually Ma Ziqiang!

Although he is not well-known in history, he has been in the capital for so long, how can Shi Yiwen not know that Ma Ziqiang is the current auxiliary minister and one of Zhang Juzheng's cronies.

Obediently, I actually saved the life of an old man in the pavilion without knowing it......

"Zhiyuan, if it wasn't for your magic last time, I'm afraid that my body wouldn't have survived last winter, and I have always remembered this life-saving grace."

Just when Ma Ziqiang thanked him, Shi Yiwen looked at him and said curiously.

"Elder Ma Ge, who wrote that letter you took last year?"