Chapter 892

How did it feel to communicate with two great powerhouses? It was like in the Swallowing Star world, a Star-level or Universe-level warrior meeting a Universe Venerable; the two sides had almost no intersection.

Even the direct descendants of those Universe Venerables rarely got to see them.

People who reached this realm were top-tier powerhouses in the entire Swallowing Star world. Going further up, they were Universe Overlords.

Standing below the peak of the universe, the only ones who could surpass these were the few top-tier powerhouses of humanity.

So what kind of communication could a small Universe-level person have when facing such powerhouses?

However, at this moment, Su Fan was communicating with Dayu and Zhenyuanzi. Of course, the two also seemed to know that the gap between the two sides was very large.

So when they communicated, they also deliberately took care of Su Fan, and the communication was mainly based on his topics.

What Dayu said were all things related to the Medical Canon and the Agricultural School.

Su Fan also understood that Dayu came for some of the knowledge systems he brought out.

For Dayu, Su Fan naturally didn't hide anything. After all, the other party was the Human Emperor, the pillar of the human race.

What was Su Fan? A talented person in contact with the human race.

And he also understood that Dayu's arrival was to protect him in the dark.

To be honest, Su Fan felt warm in his heart. A Quasi-Saint level powerhouse protecting him showed how much Fire Cloud Cave valued him.

So he also told the content behind the farming affairs one by one.

He had only taken out the fertilizer part of the farming affairs before, although it had increased the yield in the fields quite a bit.

But it was still very different from the yield in later generations.

Now, even with the new fertilizer technology, the yield per mu was only equivalent to more than 250 catties in later generations.

One had to know that the area of one mu in the Great Qin now was 1.5 times larger than in later generations.

The wheat in later generations had a yield of about 700 to 800 catties per mu, which was only one-third or one-fourth of later generations.

The difference was still very large.

The wheat in later generations was optimized generation after generation into excellent varieties, plus planting technology and fertilizer technology, especially the appearance of chemical fertilizers.

The fertilizer technology Su Fan took out was just the rough use of organic fertilizer.

Of course, chemical fertilizer was stronger. However, in later generations, organic fertilizer also gradually began to replace chemical fertilizer.

Although the effect of chemical fertilizer was good, the advantages and disadvantages were also very obvious.

Chemical fertilizer had a simple composition and high nutrient content; the fertilizer effect was fast and the fertilizer strength was fierce; it generally did not contain organic matter and had no effect of improving soil and cultivating fertility.

Long-term application would increase the content of heavy metals and toxic elements in the soil; reduce the activity of soil microorganisms, making substances difficult to transform and degrade; nutrient imbalance, nitrate accumulation; acidification intensified, PH changes too large, etc.

Organic fertilizer was different. Compared with chemical fertilizer, organic fertilizer had complete nutritional elements; could improve soil; improve product quality; could improve crop rhizosphere microbial community, improve plant disease and insect resistance; could promote the utilization of chemical fertilizer and improve the utilization rate of chemical fertilizer.

Organic fertilizer also had disadvantages. Although there were many types of components, the content of each nutrient was relatively small, and the effect was relatively slow.

In this mythical world, could chemical fertilizer be researched?

Of course it could. Although the original Laws of the later world and the mythical world were somewhat different, the microscopic particles and so on were still similar.

Those elements, Su Fan could also observe with the power of the Primordial Spirit, and Su Fan even had quite a few chemical fertilizers he had researched himself.

It was just that these chemical fertilizers of his were manufactured by his magic power and could not be manufactured on a large scale.

And in this era, wanting to manufacture chemical fertilizers on a large scale, either take out those production equipment, or do it like he was doing now, manufacturing chemical fertilizers with the ability of cultivators.

The first method, those production equipment were not so easy to get. Even if Su Fan could research them one by one and then refine them with the means of artifact refining, I'm afraid it would be very troublesome to promote them.

The knowledge system needed countless people to study.

And the second method, Su Fan felt, was simpler, that was to manufacture chemical fertilizers with cultivators.

Ordinary cultivators, even Qi Refining stage cultivators, could do it, as long as the refining method was taken out.

Were there many cultivators in the Great Qin? They were definitely many.

Hundreds of thousands were certain. If they were unified to refine chemical fertilizers, it would be relatively easy.

Of course, the promotion of these chemical fertilizers could only depend on the ideas of the Great Qin government. If they were willing to promote them, they could greatly increase the grain yield.

Organic fertilizer was relatively easy.

For example, the fertilizer technology Su Fan took out before was, in reality, one of the simplest types of composting.

Su Fan naturally had more than this one type of composting. The one he promoted was the most suitable for large-scale promotion. The remaining ones definitely had better effects, but wanting to promote them would be more difficult.

After all, most ordinary people couldn't complete them.

But if the government did it, it would be much simpler.

Su Fan didn't hide these contents and told Dayu one by one, especially chemical fertilizer and organic fertilizer.

The effect of chemical fertilizer was stronger. Although there were shortcomings, in a short time, it could greatly increase the grain yield in the fields.

"Is this thing easy to refine?"

Dayu couldn't help but be excited. After Su Fan took out the chemical fertilizer, Dayu immediately deduced it, and he instantly perceived the effect of this chemical fertilizer, which was simply terrifying.

There was no field test, but according to his deduction, it was no different from a field experiment, and it could increase the harvest by half again.

According to the fact that one shi in the Great Qin now was equivalent to about 60 to 70 catties in later generations, the best fields could have four shi, and increasing it by half again would be six shi per mu.

This number was truly too high.

Dayu was very clear about how big an increase a yield of six shi of grain per mu was for the human race.

This meant that the human race could raise more people.

The current human race, not to mention other places, just in the Nine Provinces, was still sparsely populated.

Too many places had not been developed.

Many places were not impossible to develop. Most of the wilderness was uninhabited land, either wilderness or forest land.

These could all be developed. The reason why the wilderness was not developed was that the harvest of wasteland was not high, but now with chemical fertilizer, even lower-class wasteland could have a harvest of three shi or even higher.

This could raise more people.

More children, more blessings, but before, the families of the common people couldn't raise so many people. But now that the grain harvest was large, it was different. After a few years, the grain in the home would become more and more, and they could give birth to a few more children.

In this way, twenty years later, the population would definitely explode.

Dayu could naturally deduce this scene. For the human race, a large population meant the human race was stronger. This was a theorem, a theorem that could not be refuted.

Why did the Witch Race combine with the human race back then? Wasn't it because it was much easier for the Witch-Humans to give birth to descendants than the Witch Race?