How to increase agricultural yields? In the 21st century, it is a very difficult academic problem, because at this stage of the 21st century, all the experiments that can be done have been done, whether it is hybridization, breeding new species, finding the most suitable growth environment for crops, or growing temperatures, all of which are almost experimented, and the only way to improve yield may be to start from the genetic aspect. And it is difficult to predict what the consequences will be if you eat genetically modified food.

But what about the current era? With the little knowledge that Chen Fei has in his head, he can definitely greatly increase the existing production.

There is not much to say about new species such as sweet potatoes, just rice and wheat, if artificial pollination can be used to breed hybrid rice or something, the yield per mu will double in minutes!

How much rice can an acre of land produce in this era of Datang? An acre of land can produce 200 catties of grain is considered a good year, but in the event of any natural or man-made disasters, an acre of land may not be able to produce 100 catties of grain.

But what is the yield per mu of hybrid rice in later generations? Fifteen hundred kilograms! Converted into kilograms of 3,000 catties, the record set by Yuan Longping, the father of hybrid rice, is a figure admired by all mankind.

Compared to this era, the output of one acre of land has increased fifteen times! This era seems to be an incredible miracle!

If Chen Fei said this number, I am afraid that others will think that he is crazy, and it is impossible for rice to have such a high yield anyway.

Of course, Chen Fei will not ask himself to be able to cultivate such a high-yield rice, as long as it is double or double the current output, he will feel very satisfied.

Therefore, he spent 4,000 lottery points to redeem the [Internet Search Ticket] and [Memory Potion] in the system, and wrote down the steps of cultivating hybrid rice in detail.

From a technical point of view, it is still very difficult to breed hybrid rice, and most importantly, the people involved in this project....... Most of them were a group of illiterate peasants.

It's not that Chen Fei discriminates against farmers, but it's really tiring to explain some technical things to them.

So he spent a whole day explaining to these farmers in detail the principles of hybrid rice.

In fact, the principle is very simple, it is nothing more than to select excellent rice varieties to breed the next generation, according to the law of genetics, survival of the fittest, continuous cultivation, and in the end what is left is the best rice.

But it's as simple as that, and the truth that almost everyone who has gone to high school in later generations understands is indeed "remarkable" in this era.

A group of peasant uncles listened to Chen Fei with their mouths wide open for a long time, feeling that the door to a new world had been opened. You can still play like this! I have seen it for a long time!

Looking at their sluggish expressions, Chen Fei sighed slightly, he didn't expect these people to understand all at once, since they didn't understand, then actually operate, there would always be points in their hearts when they did it, right?

After training the farmer's uncle in theoretical knowledge for three days, Chen Fei asked Li Shimin to divide 20 acres of fertile land for him, which was specially used as an experimental paddy field for planting various experimental products.

And he relied on the power of the imperial court to transfer rice seedlings from the north and south, and even obtained seedlings from some small countries in Southeast Asia.

When Chen Fei got these seedlings, he was very excited, because the rice in Southeast Asia was very famous in later generations, and if it could be introduced into China in large quantities, it would simply benefit mankind!

So Chen Fei officially dismissed Li Shimin, asked him to introduce rice and farmers who knew how to grow it from those small countries in Southeast Asia, and recommended that this rice be vigorously promoted in the south of the Tang Dynasty.

Li Shimin attaches great importance to agriculture, and when he saw Chen Fei's twists and turns, he did not hesitate and immediately made this request to the envoys of small Southeast Asian countries.

Tian Khan made a request, and these small countries naturally accepted it, and hurriedly sent people back to China to get rice seedlings, as well as sent experienced old farmers to the Tang Dynasty.

Chen Fei's long-planned agricultural plan can finally be implemented.

Comparing the rice in the north and south, it can be found that the rice in the south is full of grains, the maturity time is short, and it can be double, or even three crops a year, but it is extremely drought-tolerant, and it is easy to wither when it encounters a drought day, and the grains are not harvested.

The rice in the north is the opposite of the rice in the south, the grain is thin and small, and the ripening season is relatively long, once a year, but it is extremely drought tolerant.

What Chen Fei wants is to combine the characteristics of the two to breed drought-tolerant, full-grained rice, and the best ripening time can be shortened.

And such an experiment can only be won by quantity in the early stage. In other words, it is necessary to breed a large number of hybrid offspring, and then continuously select excellent varieties to breed successfully, otherwise there is no point at all, and a small amount will never yield a result.

And the most tedious thing is that agricultural research is definitely not achieved overnight, and it takes a lot of time to cultivate and screen. For example, from the first generation to the second generation, it may take a year in between, and it may take many years to cultivate species that can be promoted on a large scale.

The hardships are self-evident. However, since taking over this task, Chen Fei has already made up his mind to pay attention, and he must do this thing well and do it beautifully! Let the people of Datang eat high-yield food, so that the people of the Chinese nation thousands of years later can have enough to eat, and there will be no more tragic scenes of famine and hunger and cannibalism.

Chen Fei is not such a noble person, and he has never thought of taking advantage of this to live for generations, he just wants to do his best to do more for this era and this calamitous nation.

Even a small change could affect future history, not to mention the series of things he is doing now.

Perhaps, thousands of years from now, the Qing army will not enter the customs, the powers of the eight countries will be turned away, and fascism will not dare to offend our Greater China.

After a thousand years of ups and downs, it's time for someone to come out and change him. Maybe that's why God chose to give him a chance to be reborn and let him cross? Chen Fei thought silently in his heart.

Before the official start of the experimental field, Chen Fei still mainly focused on theory, imparted some more advanced agricultural knowledge to these farmers in later generations, and also passed on the breeding technology of sweet potatoes to them.

Before the success of the experiment on high-yielding hybrid rice, sweet potato was still a very perverted food species. When these old farmers heard about the yield of sweet potatoes and tasted the taste of sweet potatoes, they were all stunned.

They can't believe that such a delicious thing is so productive? This... Nima is going against the sky!

At the same time, Chen Fei also realized a very serious problem, what if because of the high yield of sweet potatoes, the people of the whole country should grow sweet potatoes instead of rice, wheat and other grains? Won't eating sweet potatoes every day spoil your stomach?

Well, this is really a very serious issue, in order not to let himself live in the "evil atmosphere" in the future, he decided to ...... Conform to the laws of nature?

(End of chapter)