Chemical fertilizer!

Although it was only a flash of inspiration at the beginning, that night, after thinking about it carefully, Shi Yiwen found that this matter was indeed promising. Especially after looking up some relevant materials in the library, he was a little surprised to find that the production and manufacturing of chemical fertilizers is indeed very simple.

"Phosphate rock plus sulfuric acid...... So you get phosphate fertilizer? ”

Looking at the information on the production of chemical fertilizers by the soil method in surprise, Shi Yiwen looked up the information on phosphate rock again.

"Zhangjiakou City, Zhuolu County, Jinshan phosphate mine, well, reserves of almost 200 million tons...... That's a big mine! ”

Sulfuric acid, phosphate rock!

Thinking of the excess sulfuric acid production of the acid manufacturing plant itself, Shi Yiwen naturally moved his thoughts to the Alum Mountain phosphate mine in Zhuolu County, after all, it is not far from the capital, but in the seventh year of Wanli, there is no Zhuolu County, but Alum Mountain. Even during the Mengyuan period, Alum Mountain was still a county.

Because there is information on the location of the alum mountain phosphate mine in the data, all that is needed is to send people to mine the phosphate rock, and at the same time as sending people to mine the phosphate rock, Shi Yiwen moved his mind to the coke ovens of the Zunhua Iron Factory, those coke ovens were originally just simple coke ovens, but this time he went to Zunhua, Shi Yiwen was at the exhaust gas discharged from the coke oven.

"Teacher, what's the use of those coke oven exhaust gases?"

Xu Guangqi asked with some puzzlement.

"There are also a lot of things in the exhaust gas, after the coal is distilled, you can get coke, coal tar, crude ammonia and coke oven gas, coke oven gas, can be used to raise fire, light the lamp, as for this crude ammonia, can be used as fertilizer, an acre of land only needs to be applied more than a dozen catties, can increase the yield of dozens of catties."

The teacher's explanation made Xu Guangqi say with some puzzlement.

"Ammonia can increase production, but what is in this ammonia? Why can production be increased? ”

This naturally involves chemical knowledge, and along the way, Shi Yiwen is very rare to fulfill his responsibility as a teacher, teaching Xu Guangqi chemical knowledge, from nitrogen to nitrogen fertilizer, explaining the most basic chemical knowledge in every detail.

Sometimes, the transfer of knowledge is always difficult, but fortunately, the separation between the late Qing Dynasty and the development of science in the world is almost similar to that of today, and the books that were popularized in the library in the late Qing Dynasty and the early Republic of China are particularly precious, although they are only available electronically, but they can just meet the needs, and only need to change the appearance of some discoverers.

As for who found it, it doesn't matter, just write it in a book, and then let Xu Guangqi learn this knowledge, and then ...... Perhaps, in the future, we can open a Gezhi Academy.

Again, Shi Yiwen's heart moved the idea of opening a college. The opening of the academy is the best way to popularize knowledge, although some knowledge can be disseminated through newspapers, but only through the academy can the people of this era truly accept that knowledge.

However, is it possible to open a academy now?

Thinking of Zhang Juzheng's ban on private academies in the world last year and prohibiting others from lecturing to control speech, Shi Yiwen's brows furrowed, although the resistance of the local government and gentry made the "ban on academies" a dead letter, but this is the capital, and the opening of academies - this is basically against Zhang Juzheng.

Although he is friends with the emperor, and now he is also on the line with the British public, but for Shi Yiwen, who is familiar with history books, how can he not know how powerful Zhang Shoufu is? If he hates, I'm afraid that he will die a very ugly death.

"Wait a minute, wait a minute, take advantage of these few years, you can teach a few students first, and wait a few years before opening the academy......"

Again, in the face of reality, Shi Yiwen chose to avoid avoiding the storm, but he didn't know that sometimes, things often don't go as people want. There are many times when unexpected turmoil will always come inadvertently.

It is early summer, on the thoroughfare road to the suburbs, the incense carts and horses come and go, in an endless stream, although it is not the season of early spring, but with the scholars from all over the country for next year's scientific expedition began to gather in the capital, so there are always incense carts and horses to the famous places outside the city every day, with the beautiful relatives and friends together to chant the wind and the moon, all the endless scholars are romantic.

However, not everyone will bring their beauty to have fun, sometimes, it is just a few friends to hang out, as usual, as one of the "Eight Views of Yanjing", "Lugou Xiaoyue" will always attract scholars from all over the world to come to play.

As usual, when Liu Kanzhi and his friends walked into the store together, Xiao Er stepped forward to greet him, he was a regular customer, walked upstairs to find a place to sit on the railing, and ordered a few drinks and dishes at random, and Xiao Er responded smartly. Just as he was having a good conversation with his friend, someone suddenly shouted.

"Oh, Brother Wendao."

Liu Kanzhi looked up and saw that it was Zhang Taizheng, and immediately greeted him warmly.

"Oh, it's Brother Narutai."

Seeing that he was also coming with a friend, he took the initiative to invite him to the table, although he was the son-in-law of the first assistant, but Zhang Taizheng was also the son of the second assistant.

Because the identity of the two is not ordinary, so at the banquet others are naturally very flattering to them, the two of them drank to the fullest, when the night is getting thicker, everyone came to the corridor of the moon viewing building, enjoying the night view, although the "Lugou Xiaoyue" is one of the eight views of Yanjing, everyone is fascinated for a long time, but for Liu Kanzhi and Zhang Taizheng, who often accompany friends to enjoy the scenery, they don't feel anything.

So the two gave up their positions and chatted on the other side, chatting, just in the night, they could vaguely see the chimney of the brickyard in the distance, looking at the chimney in the scene and the company of Ming, Liu Kanzhi said casually.

"The scenery is so beautiful tonight, but this chimney is very white, I really don't know who built the brickyard here, and ruined the scenery here."

"Oh? Aren't Brother Wen Dao and the owner of the brickyard very familiar with each other? ”

Zhang Taizheng said casually.

"Acquaintances? What does this mean? ”

When Liu Kanzhi was puzzled, Zhang Taizheng blurted out again.

"Yes, the other day, I passed by and seemed to see ...... Oops, Xu is little brother is dazzled, dazzled, I'm really sorry. ”

Zhang Taizheng's casual remarks made Liu Kanzhi taken aback, looked up at Zhang Taizheng, stared for a moment, and said with a serious expression.

"What did Brother Xian see?"

"This ......"

Zhang Taizheng immediately showed a look of embarrassment, and only when Liu Kanzhi's gaze became more and more cold when he looked at him, did he squeak and whisper.

"That day, the younger brother seemed to see his sister-in-law and his wife seem to go to the factory, and he only thought that his brother and he were acquaintances, so he ......"

Zhang Taizheng's words made Liu Kanzhi's gaze suddenly cold, and his face became extremely ugly, and he said coldly after a while.

"Brother Xian must have seen it wrong, Neiko worships the Buddha and recites scriptures at home all day long, how can he leave the house?"