After a spring rain, the long-prepared spring ploughing began vigorously.

Except for the iron-making plant, all other factories were shut down for half a month, just to let the spring ploughing go smoothly.

This year's farming method is completely different from previous years for the villagers.

The seeds are high-quality cereals that Miss San began to select a month in advance, and the fields have been sprinkled with grass ash swept from the charcoal factory and fertilizer specially made from sorghum stalks and other materials before sowing.

Wang Dayou's master's blast furnace worked day and night, and made a curved plough that could be pushed by manpower, and the ploughing speed was as fast as before, as if a god was casting a spell.

Not to mention the large plough rakes pulled by cows, donkeys and other livestock, and an acre of land can be bulldozed quickly.

Seven hundred acres of land is undoubtedly a bit excessive for more than 200 people.

But the farm tools in his hand have become iron plows, shovels, iron hoes, shovels, iron sickles and other things, and the 700 acres of land do not seem to be as difficult to grow as imagined.

It took 10 days to sow 400 acres of wheat, 200 acres of millet, and 100 acres of sorghum before the abundant rain arrived.

Xu Yue calculated that ordinary people need to eat 30 kilograms of grain a month, and those with strong physical strength are 45 kilograms, and the compromise is 40 kilograms to calculate, a person needs 480 kilograms of grain a year.

If the 500 people in the village were to be fed, the annual grain needed would be 240,000 kilograms.

If it is spread evenly to 700 acres of land, the yield per mu will reach 343 kilograms, which can be sufficient.

In modern times, the average yield per mu is more than 600 catties, and the yield per mu is not a problem.

However, in this era, the yield per mu of high-grade fertile land was about 350 kilograms, the yield of medium-grade fertile land was 200 kilograms, and the yield per mu of low-grade barren land, which accounted for the largest proportion, was less than 100 kilograms.

After deducting taxes and other household expenses, don't even want to drink porridge!

Of the 700 acres of land in the village, the proportion of fertile land is pitiful, most of them are middle and low-class, and there are many wastelands that have just been opened for a long time, and the fertility is lacking.

Therefore, even if she has exhausted all the methods that can increase the fertilizer of the field this year, it is still an impossible goal to achieve a yield of 343 kilograms per mu.

The people regard food as the sky, looking at the satisfied expectations of the villagers, Xu Yue couldn't laugh, and couldn't even squeeze out a smile.

Fortunately, there are other outputs in the village, and it is only by selling cloth and selling glass, porcelain and other things that it can maintain this larger and larger plate.

Speaking of which, if you want to solve the problem of eating, you have to look at hybrid rice.

After spring ploughing, Xu Yue finally had some free time.

In the small courtyard outside the room, she enclosed a small plot of land and put up a warning sign prohibiting anyone from approaching.

Not only that, in order to protect the few cotton seeds and watermelon seeds that she finally got from the system bugs, Xu Yue also specially told the family members and servants in the courtyard not to touch their small vegetable patches.

After making sure that everyone paid attention to it, Xu Yue breathed a sigh of relief and had the heart to study the cultivation method of three-line hybrid rice that was exchanged from the system.

In the past, Xu Yue only knew that if she wanted to have a high yield, she would buy hybrid rice, and she had also heard that it was not easy for her agricultural ancestors.

But what is the specific method, presumably most people are the same as her, and they have no concept at all.

It wasn't until she saw this hybrid rice cultivation book that Xu Yue understood how difficult it was for the ancestors to be able to feed everyone.

Unlike most species in nature, where the "best" and "better" genes are reproduced, hybrid rice needs a [Gao Fu Shuai] to match [Dwarf and Poor] in order to produce better offspring.

It's not difficult to find a tall rich handsome and a dwarf poor, but rice is a self-inbred type, and when you point to it, the pistils and stamens will be paired by themselves, and you have to separate them from the same rich and white rich and beautiful, and let them cross with the dwarf poor.

But there are so many ears of rice, and there are 150-300 flowers on one ear, not to mention how to do it without causing harm to the rich and handsome stamens, just match all the ears on each rice plant, and people can go crazy.

Therefore, the ancestors of agriculture put forward the idea, is it possible that there is such a wonderful variety, which is born castrated?

And it turned out to be true!

As a result, the current three-line hybrid rice cultivation method was derived.

The standard answer was already in front of Xu Yue, but Xu Yue first had to find the wonders of the three rice worlds.

Sterile lines, maintenance lines, and restorer lines, and each of these three is difficult to find.

And in Youzhou, a place where wheat, millet, and millet are used to growing, where can I find rice?

Xu Yue was depressed, lying on the soft blanket in the room, and began to give up on herself in a daze mode.

The busy family members didn't realize that something was wrong with their little daughter until the fourth day when she was closed.

"Bang!" With a loud bang, the closed door was kicked open, and just listening to this familiar breath, Xu Yue knew who was coming.

"Sister?" Xu Dalang knelt in front of the blanket with a sliding shovel and called her carefully.

Xu Yue, who was staring at the roof in a daze with her eyes open, rolled her eyes and sat up helplessly.

She didn't want her emotions to affect anyone else.

Besides, being depressed is not her style.

Looking at the aunt and sister who walked in, as well as the father who should have just arrived on horseback from the county government after hearing the news, Xu Yuexin said: The family members who are too busy to see the shadow of people can be regarded as free to come and see my life and death.

"Ahem!" Xu Yue cleared her jerky throat because she hadn't spoken for too long, and the family immediately stared at her closely, for fear that something was wrong with her.

Wang's forehead was still stained with gray and black coal stains, which showed that he had just arrived from the arsenal.

"Thirsty?" Wang asked with concern.

Xu Erniang didn't need to be reminded, she immediately got up and poured a glass of water and handed it to her sister.

Xu Yue said thank you, and the whole family immediately breathed a sigh of relief, watching her finish drinking the water, and feeling relaxed that the child's spirit was fine.

Xu Yue finished drinking the water, her mind was still a little confused, and she said in a seemingly incoherent voice:

"Boats, southbound, rubber, sugar cane, and most importantly, rice!"

Xu Da immediately reacted and asked, "The young lady wants to build a ship and go south to buy rice to eat?" ”

Xu Yue nodded, it's about the same.

She looked at A-Niang Wang again, in the end, this is the real infrastructure boss, and she immediately grasped the point.

"Rubber can be used to make tires, shoes, leather strips, speed up traffic, sugar cane can be made into sugar, and rice, I heard that you lock yourself in your room and read a book......"

The sharp gaze fell on the scattered cases on the side, "Sucrose Extraction", "Three-line Hybrid Rice Cultivation Method", "World Sailing History", "Colonization and Being Colonized", "Utopia and Marx", "Materialist Dialectic" and so on, the style of painting gradually deviated......

Wang first touched her little daughter's forehead to check whether her little head had burned out with so many things in it.

Well, no.

Wang Shi breathed a long sigh of relief, and then glanced at Xu Da again, what did he do when he got so many ancient books back from Confucianism?

Let's see what the young ladies have exchanged for these ancient books and tech trees!

Is this something a child should worry about?

Xu Da blinked, very dazed, very innocent, the young lady wants to read these books by herself, what does it have to do with him?

But the family is not stupid, and they have already seen the clues.

The meaning that Xu Yue wants to express is actually very simple, that is, to seize the state!

As long as this piece of land is acquired, a large part of the problems that plague her can be solved.

Warm southern rice can be planted for two seasons, and even if hybrid rice cannot be made for the time being, the problem of eating can be solved.