Elves' Heavenly Mission

There are three major elements for plant growth, namely sunlight, air and water.

Here is the tropics, with strong sunshine and abundant precipitation, and it is not isolated from the world, so these three elements are all satisfied.

It is precisely because of this that the trees here grow so lush and tall.

However, these are only the three major elements of plant growth, not the three major elements of plant growth.

What Yunning needs is the fruit, not the trunk.

Therefore, it is necessary to find ways to increase the yield of fruit trees.

And fertilization is undoubtedly the best way.

Corresponding to plant growth, there are three elements for plants to grow well.

Nitrogen, Phosphorus and Potassium, respectively.

As long as these three elements are sufficient, coupled with abundant precipitation and strong sunlight, Yun Ning can receive the fruit brought back by the Thunderbolts if he stays in the camp every day.

Potassium fertilizers in nitrogen, phosphorus and potassium are easier to collect. Although Yun Ning has never planted a field in person, he still reads a lot of historical travel novels.

The most primitive and simplest potassium fertilizer is plant ash.

Weeds and branches are collected and burned, and the ashes obtained are plant ash.

This is the principle of the so-called slash-and-burn farming in ancient times.

After being burned by fire, the land is rich in potash fertilizers, so it can grow well naturally, but after a few years of planting, the fertility of this land has declined, and people will migrate to other places and continue slash-and-burn farming. After the land re-grows with weeds, it will continue to come back and burn.

Of course, this is only the most primitive method. As a modern person, Yun Ning can naturally burn the plant ash in other places, and then transport it to where he needs it.

Potassium fertilizer is easy to solve, but nitrogen fertilizer is more difficult to solve.

Nitrogen is a massive element in this world. 78% of the air is nitrogen. However, the problem is that nitrogen is extremely stable and difficult to be utilized by humans.

Bean plants have a natural ability to fix nitrogen, the problem is that Yunning does not have the seeds of bean plants.

After all, he is a trainer, not an agriculturalist, and it is impossible to go out with all kinds of seeds.

In addition to legumes, the most common source of nitrogen fertilizer in rural areas is manure.

However, there are too many fruit trees that Yunning needs to take care of.

With his dung-making ability alone and dozens of elves, it is really impossible to meet the needs of the whole island's fruit trees.

Therefore, Yunning set his sights on the sea.

In addition to elves, there are a lot of fish and shrimps in the sea.

The bodies of marine animals contain a lot of nitrogen and phosphorus elements. That is to say, as long as Yunning can get a lot of fish and shrimp, the problem of nitrogen and phosphorus fertilizers can be solved at one time.

Then the question arises, how should Yunning catch so many fish and shrimps?

Not to mention that Yunning does not know how to make fishing nets. Even if Yunning has fishing nets, he does not have a fishing boat big enough to catch fish.

Just rely on the lifeboat in Yunning. How many fish and shrimps can be brought back at one time?

"It's difficult~"

Yun Ning sat on the stone by the lake and tapped his forehead.

If these problems cannot be solved, I am afraid that I will not even be able to grow smoothly.

Maybe, it will be two years before the fire dinosaur evolves into a fire-breathing dragon.

"Milu~"

At this moment, Dianlong's voice attracted Yunning's attention.

Yun Ning looked up and saw that Dianlong was holding the fruit and distributing it to the elves in the lake.

And the elf who got the fruit will obediently follow the slow beast, and serve as the slow beast's younger brother.

Or play house with the dumb beast.

Although the dumb beast doesn't actually understand the meaning of playing house.

"This is"

Yun Ning's eyes widened, watching Dianlong skillfully distribute the fruit.

It's not that I feel sorry for these berries, but that Dianlong's behavior inspired Yunning.

Just because you can't catch fish, doesn't mean these water elves can't.

People are born to live in the ocean. There are no tree fruits in the sea. Most of them live by catching small fish and shrimp.

If that's the case, then why don't you cooperate with them?

Let them catch fish and shrimps, and then give them a certain reward.

Tree fruit is obviously not allowed, although compared with fish and shrimp, the nutritional value of tree fruit is much higher, and the elves will be willing to exchange fish and shrimp for tree fruit.

But the added value of the fruit is too low.

One tree fruit cannot exchange many fish and shrimp.

It is different to make tree fruits into energy cubes. A low-level energy cube made from four tree fruits may exchange for more than 4 times as many fish and shrimp as tree fruits.

This is like the scissor difference between the industrial country and the agricultural country in the previous life. The agricultural country provides cotton to the industrial country, and the industrial country makes clothes and then sells them to the agricultural country.

No matter how it is sold, industrial countries will make money.

As a highly intelligent human being, Yunning naturally cannot exchange the most primitive tree fruit. It is most cost-effective to make energy cubes that the elves have never seen and cannot make in exchange for the resources they need.

Just do what you say. During this period of time, because of the busy camp production, Yunning stopped the production of energy cubes. As a result, there are still a lot of berries left in Yunning's space backpack.

With Yunning's current proficiency, making low-level energy cubes is already easy. In just 3 days, Yunning made 100 low-level energy cubes.

Doing business pays attention to fair trade, but promotion is also very important.

Because these elves have never eaten energy cubes for generations, Yun Ning chose to provide them with the first energy cube for free.

And after eating the energy cube, these elves can no longer face up to their previous food.

No wonder my strength improves so slowly. It turns out it’s because the food is too rubbish.

This kind of thinking quickly occupied the brains of all the elves, and they came to Yunning one after another to ask for more energy cubes.

When the matter developed to this point, Yun Ning naturally showed his capitalist face.

If you want energy cubes, you can exchange them for a ton of fish and shrimps.

I don't care what kind of fish or shrimp you are, and I don't care if it's dead or alive, as long as it's the carcass of a fish or shrimp, it's fine, anyway, it's used as fertilizer.

The elves, who are unwilling to continue eating junk food and whose strength is slowly improving, can only accept Yun Ning's condition.

Although these elves are good at fishing, they are only so big, and they can only carry so many things at one time, so Yun Ning also specially issued a small wooden card to each elf with a registration number, and when the elves under this number When one ton of fish and shrimp is submitted, one energy cube can be obtained.

Although Yun Ning can forcibly tame these elves to catch fish and shrimp for himself, the law of human society development tells Yun Ning that only voluntary ones are the most efficient.

In previous lives, human beings developed from slavery to capitalism not because of humanitarianism, but because capitalism can better stimulate people's enthusiasm for creating wealth and allow the superiors to better cut leeks, that's all.

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