Ma Qiang smiled and said, "This is actually very simple.

The amount of fertility of the land is actually determined by the amount of many trace elements in the land. One of them is nitrogen fertilizer. As the name suggests, nitrogen fertilizer mainly refers to unit fertilizers with nitrogen as the main component.

There is a lot of nitrogen in the air. When lightning strikes past, under the high temperature and high voltage environment created by lightning, nitrogen and oxygen will undergo an ionization reaction, and they will be recombined into nitrite and nitrate molecules, and then fall to the ground with rainwater, becoming natural nitrogen fertilizers and being absorbed by the land, which increases the fertility of the land.

The iron rod tree is there, hoping that lightning will slash in the direction of the field, so that precious nitrogen fertilizer will be concentrated in the field and supplied to the crops for absorption.

That's what the two brothers should understand, right?"

Cao Cao and Liu Bei stared at each other with big eyes.

understand?

I understand a hammer!

Are you really giving us two explanations?

Ma Qiang continued to lower his head and started to work, while Cao Cao asked suspiciously whether there was any other intention to build iron rods in the field.

It was noon, and with the sound of bells, the first train lunch box in human history was placed in front of Ma Qiang and others.

Ma Qiang opened the lunch box and found that it was quite rich, including river shrimp, fried pork chops, and vegetables.

Well... When the train is officially launched in the future, the train should also be equipped with salesmen and carts.

The train without beer, drink, mineral water, chicken feet, instant noodles, ham sausages." The shouting was incomplete.

By the way, you should also add a "leg tight!"

When the train passed through Qinghe County and arrived at Guangzong, it was already dusk.

Ma Qiang got off the train and stretched.

It's so tiring along the way.

Cao Cao followed Ma Qiang off the train, looked around, and soon saw the walls of Guangzong City not far away.

But what surprised him was that it was supposed to be outside the wilderness city, and there were already many houses everywhere at this time, and I don’t know how many families there were.

Is this Guangzong City?

Is this Guangzong City?

Cao Cao had been to Guangzong, and he had been to the time when he wiped out the Yellow Turban Army.

Compared to that time, these are just two cities.

"Brother Ma~ Look here!"

Ma Qiang looked back and saw Lin Zhi taking photos of himself with a camera team. He hurriedly pulled Cao Cao, Liu Bei and others to face the camera and put on poss.

"Brother Xuande, take a picture and laugh!"

"Brother Meng De, your face is too stiff, be more natural."

"Linzhi, how about it?"

"Okay, everyone shouts with me, eggplant!!"

eggplant?

Why do you want to shout eggplant?

Fortunately, eggplant had been introduced to the Central Plains at this time, otherwise Cao Cao and others would have to worry about what this eggplant was.

After taking the photo, Ma Qiang said to Cao Cao, "Brother Meng De, Brother Xuan De, you two should live in my mansion for the time being."

"promise!"

Just then, a tiger roar came, and many of Cao and Liu's old subordinates were so scared that they shrank back.

But a strange-looking white giant tiger appeared not far away. The white tiger had wings, horns on its forehead, and a girl was sitting on its back.

The giant tigers rushed to Ma Qiang and others. Cao Cao and Liu Bei looked at the giant tiger and felt familiar, but they were a little unconfirmed.

"Bai Yan, Ning'er, why are you here?"

Zhang Ning jumped down with a thud and said with a smile, "Sister Qingcheng asked me to see if you have brought her new sister."

Alas! There are so many people! What are you saying? This is!

Ma Qiang coughed lightly and said, "You know how to joke, why did you bring Baiyan?"

Bai Yan wanted to pounce on Ma Qiang and express his enthusiasm, but Ma Qiang dodged it.

There are so many people! If you press down on you and lick it, what is the majesty of me, the general!

"Stop making trouble in Baiyan! If you make trouble, I will find a partner!"

When Bai Yan heard that Ma Qiang was about to urge her to get married, she immediately sat there honestly, tilting her head and looking cute.

Speaking of which, Bai Yan is older and it's time to get married. Ma Qiang also let her go to the mountains and asked her to try to contact other wild tigers to see if she could find the tiger she wanted.

Unexpectedly, the Baiyanhu had a small opinion of fighting and said that he wanted to find someone to beat him. It was a mutated tiger. Where could there be any tiger that could beat him? As a result, not only did he not find the tiger I thought, but he added several tiger skins to Ma Qiang's warehouse...

Alas, I feel sorry for my parents all over the world...

"Master, I'm actually watching the train operation. How do I feel along the way?"

"It feels pretty good, but the speed is still a little slower. It would be better if you can reach a speed of more than 300 kilometers per hour."

Zhang Ning rolled his eyes directly, thinking that Ma Qiang was talking in his sleep.

The speed is 300 kilometers per hour? Why don’t you fly?

"What about speed?"

Ma Qiang thought for a while and suddenly asked, "By the way, where did you go just now? Why are you here just now?"

"I don't know when you will arrive, Master. Bai Yan felt bored and uncomfortable here, so he took it around and ran away."

Don't know when it will arrive?

Ma Qiang suddenly thought of what the train lacked.

"Well, in order to facilitate train dispatch, I think it should be added to the train's cable.

By the way, Ma Jun is there. You can talk to him later. I will take Cao and Liu to the mansion to rest first. You can come to me later."

"promise!"

Cao Cao and Liu Bei looked at Zhang Ning who was discussing the train with Ma Qiang, and looked at each other suspiciously.

Ning'er?

Could it be that Zhang Ning?

After so many years, Zhang Ning's existence has gradually become known to everyone, and Ma Qiang is no longer the little county magistrate who needs to worry about the court's reprimand.

Ma Qiang took Cao Liu and others back to the mansion. At this time, the sky was getting darker, but Ma Qiang's General's Mansion was bright. Under the light of the lights, in the eyes of Cao Liu and others, it was like a fairyland.

Cao Cao almost got angry when he saw this.

In order to save money to fight, you can’t even bear to eat abalone. You, Ma Qiang, lived in Hebei so extravagant and so much money, grain, and soldiers. Where can you make sense?

"Okay, someone will take you to your room later, and someone will serve you for breakfast tomorrow. Let's go away first."

Ma Qiang ordered and asked the attendant to take everyone to rest. He came to the study and invited Guo Jia to discuss the next thing.

"If you want to win Cao and Liu's heart, it is an important step to let them see our strength clearly.

I am going to take them to visit Handan Steel Factory first, and then to Youzhou. What do you think about Fengxiao?"

Guo Jia nodded and said, "Jia thinks this move is very good.

In addition, we should also take them to see schools, hospitals, and markets, and hear how the people say about us.

But... Jia has a saying that should be said or not."

"Hey, you and I are the same as brothers, just say it."

Guo Jia took a breath and said, "Jia thought that the general should not have too much hope for conquering Cao and Liu.

Both of them are heroic. Cao Cao's strange plans are changing, Liu Bei is good at winning people's hearts, and he once cedes land and ruled the world.

Ming Gong wants to suppress these two people, it’s easy!

It's hard to conquer these two people!

According to the information reported by the Military Intelligence Bureau, Cao Ren and other old subordinates of the Cao family have been secretly engaging in news with each other, and they were also seen after the powerful men in Yanzhou who opposed Qingtian.

Then Liu Bei is even a royal family member. Once he arrives in Ji County, the emperor will definitely win him over. Then..."

"You are right about Fengxiao..." Ma Qiang sighed.

How could he not know about these things? But he, who was born in later generations, was really unwilling to massacre these Chinese heroes.

And there is also a place that is far west...
Chapter completed!