Taihang Mountain, Yellow Turban Village, is Zhao Hui's scientific research institute.

Zhao Hui opened a door to Shen Kui and others.

Now, Shen Kui and they are searching behind this door every day.

Even if you only explore a little new knowledge every day, there will always be a qualitative change over time.

"Teacher, don't all those farmers burn the wheat stalks left after the autumn harvest and sprinkle them in the fields, and they also use manure to water the fields to maintain the soil fertility and ensure that there will be another harvest in the coming year."

Shen Kui didn't think about this aspect before, and they didn't think about making fertilizer to make the land more fertile.

They are seeking knowledge, but Shen Kui is still a little less aware of the fact that they are now turning knowledge into power and into practical effects.

"But whether it's burning ash or manure, the fertility is too poor, and the efficiency of utilization is not enough."

Zhao Hui handed over the yield data per mu of Youzhou statistics over the years to the review.

"It's a downward curve."

Normally, in order to ensure the fertility of the land, many fields will be fallow, and wheat will be planted this year, and it will not be planted again next year.

But now that land annexation is serious, ordinary people are willing to leave their fields empty.

It doesn't matter whether the land is barren or not, when the season comes, the seeds must be sown.

If you don't plant, there won't be a grain in the field in the fall.

Planted, maybe little, but at least there is a harvest.

There are so many fields in their hands, even if they don't plant, they don't know what their time is for.

"In order to make sure that those farmers can harvest more food, we have to make better fertilizers."

"Teacher, how can this fertilizer be improved?" Someone asked.

They all know that if they really come up with more effective fertilizer, it will definitely be a great thing for the people.

Although Zhao Hui is only mentioning it now, these people in the Yellow Turban Village are very excited at the moment.

I can't wait to start making fertilizer right away.

"You also know that there are many microorganisms in this world that we can't see with our naked eyes. It takes tens, hundreds of times to be able to see them. ”

Zhao Hui explained some microorganisms a little: "The fertilizer we are going to make this time is to use the fermentation of these microorganisms. ”

It's just that for fertilizer, Zhao Hui was only very young, and he saw the people in the village make simple fertilizer by themselves. Some of them are ten days and a half months.

It's all some animal liver, some hay, a lot of things mixed together and stirred.

The impression is very vague, and Zhao Hui estimates that he will have to try it a few more times.

But he knew that depending on the fermentation of different things, there would be nitrogen, potash, phosphate, etc.

Behind the Yellow Turban Village, more than a dozen large pits were dug.

There is a lot of stuff piled up in each pit.

In some large pits, there is feces, some are animal liver skins, and some are eggshell castor beans and so on.

There are also many fields on the side.

There is also a field in Heifeng Village, which will also be used as a test field next year.

Zhao Hui personally took Shen Kui and them to divide the fields around Heifeng Village into more than a dozen markers.

For the big pits behind the Yellow Turban Village, Zhao Hui is still very confident that the fertilizer in these big pits can increase the yield of the field.

But how much to increase production, and which one is the best, will not be known until next year.

Zhao Hui stayed in the Yellow Turban Village for more than a month before returning to Yecheng.

This year, we will start to make fertilizer, and it will take at least two or three years to implement fertilizer in Youzhou, Jizhou.

Next year, it will only be tested in Taihang Mountain, and it will be implemented in Yecheng Jicheng and other surrounding areas in the following year.

In the next year, the people of almost the four northern states will know the benefits of fertilizer, and then they will start to make and use new fertilizers themselves.

In addition to fertilizer, Zhao Hui also gave Shen Kui a task.

That is to increase the yield of crops.

Fertilizers can increase yields, and there are many other ways to increase yields.

Improving the quality of crops and cultivating new varieties are just these methods that are not as direct and fast as fertilizers.

It may take several years or more to breed a new variety.

If we can breed super rice and super wheat, then the people of Dahan will no longer have to worry about food.

Think about it, now the yield per mu of Dahan's field is about five stones, if it is doubled tenfold, one person will be able to easily feed a large family.

At that time, grain will become the cheapest thing in Dahan.

However, it is basically impossible to make a super species, with Shen Kui's current ability.

But if it can be increased by one or two percent, it will also be a great blessing for the people of Dahan.

The fertilizer is increasing by one or two percent, and the crops themselves are increasing by one or two percent.

It is enough to make the people of Dahan now have enough food and clothing.

Yellow Turban Village Black Wind Village, every year in the field, the best rise, the most fruitful crops, left as the mother seed.

In addition, Shen Kui will also graft various crops.

When Zhao Hui left, a lot of big pits were dug in Heifeng Village and began to make fertilizer.

These people who stayed in the Black Wind Village trusted Zhao Hui very much.

Although the fertilizers that are still fermenting in these pits have not yet been tested, the people in the Black Wind Village are willing to use these fertilizers in the coming year.

They are willing to spend a year doing experiments for Zhao Hui.

They believe in Zhao Hui, and they are not afraid that these new fertilizers will not be effective.

Most of the people don't think about change, they just come down like this for generations.

The grandfather was like this, the father was like that, and when it came to the son, so he farmed.

It is only the experience of the fathers who accept it.

Why should the seedlings be cut a little bit and leave a gap?

Many farmers also say the reason.

I just know that if the seedlings are planted too densely, the seedlings will not grow well.

When Zhao Hui returned to Yecheng.

Yuan Shu also reached the end of the mountain and the water, and he was cornered.

Shouchun's palace has been burned down by a fire.

In the palace, the three thousand beauties that Yuan Shu had brought have all fled.

If you are lucky, you can return to your own home, and if you are a little unlucky, you may be sent to the home of the gentry, or become the woman of the people.

After all, those who can be favored by Yuan Shu and sent to the palace are definitely beauties, and none of them are ugly.

Those who are even more unlucky may end up on the streets and unclothed.

Yuan Shu took the remaining remnants of the defeated army and left Shouchun.

Yuan Shao has died a long time ago, and now Yuan Shu, looking up, he can't find anyone to go to.

As far as the eye can see, all of them are his enemies.

The Sailor has been defeated.

In Yuan Shu's hands, there are only 50,000 people now.

The generals around him are only one Ji Ling.

The others were either killed, or had already run away, and some surrendered to Sun Ce.

The cities fell one by one, and the city gates were opened one by one to welcome Sun Ce.

Yuan Shu, there is no power to return to the sky.