In addition to providing volcanic ash as fertilizer, Marin also supplied "high-tech" ploughs, which replaced the Saxon heavy and light ploughs used in the homes of these old aristocrats, in order to further improve the efficiency of farming.

Originally, Marin also planned to provide them with a "new agricultural technology" such as a bull nose ring. In this way, the use of cattle ploughing can also save costs. But then I thought about it - it seems that horse farming is faster and more efficient, and it is better to continue to maintain horse farming.

Europe is different from China, there are many people in China, there is no shortage of labor, and natural cattle farming is more cost-effective. Europe is short of people, and the Americas are even more short of people, so it is better to promote faster horse farming.

In fact, Marlin has been hesitant to promote manure. However, once the spread of manure becomes known to outsiders, food production will rise dramatically throughout Europe. At that time, the level of agricultural production in Europe will be able to catch up with China. And Marin will find it difficult to make a fortune by selling grain.

So, Marlin didn't let others know the secret of manure anyway. However, it is estimated that it will take several months to dispose of the manure so that it loses the smell of manure. Otherwise, if there is a trace of foul smell, people will recognize it as feces.

In addition, the appearance of feces is easy to recognize even if it loses its odor. After all, feces are not something uncommon. Even if it is dried and tasted, you can vaguely see the original appearance.

And Marin now has a special person to process the manure, and then mix it with phosphate fertilizer and potassium salt, and then send a special person to apply the fertilizer, which consumes a huge amount of human resources and is very uneconomical.

So, Marlin has been thinking about how to dispose of the feces so that people can't tell that it's......

It just so happened that this time in the province of Bremen to engage in the redistribution of interests, Marin thought a lot......

However, he can't seem to solve the smell of feces. If you add too much else, you can hide the taste. However, it also reduces fertility......

What to do? Marin was bored and went fishing on the Elbe......

Marin casually found a fishing rod from the house of a nobleman whose house had been raided, and accompanied by several guards, went fishing on the Elbe.

As for bait? This is easy, Marin beckoned, and a few bitter guards began to dig earthworms by the Elbe with their swords......

When a bunch of earthworms were delivered to Marin, Marin looked at the disgusting-looking earthworms wriggling all over the ground, and suddenly his inspiration was triggered......

……

What inspiration did Marin trigger? He remembered a later news report about raising earthworms from cow dung......

This report is hidden in the depths of Marin's memory. After all, this is not important information, and Marin has never thought of it. But this time he was fishing, and when he saw a bunch of earthworms dug up by the guards, he suddenly remembered the news.

"That's right! I can dispose of manure with earthworms! ”

Earthworms are masters of eating dung, and like maggots and feces shells, they love to eat dung. It's just that maggots eat feces and will turn into flies and harm the world. The shell guy likes to roll the manure into balls and hide it in the dirt......

Only earthworms don't just like loose soil. Moreover, after eating manure, the earthworm manure pulled out is called the "king of organic fertilizer".

In the report that Marin remembers deeply, it is mentioned that a farmer collects cow dung from a nearby dairy farm and uses it to raise earthworms. Then, vermicompost is obtained, which is then used as organic fertilizer to grow organic vegetables......

Organic vegetables can't be grown without chemical fertilizers, but they don't grow well without fertilizers. And using manure as fertilizer, it is too smelly. Moreover, using animal manure as fertilizer also provokes flies.

The use of vermicompost as fertilizer not only grows well in vegetables, but also absorbs quickly......

In addition, farmers who raise earthworms with cow dung also use earthworms to feed yellow eels. Yellow eels like to eat earthworms the most, and when they eat earthworms, they grow well. Moreover, the price of yellow eel is high, dozens of yuan a catty......

Relying on cow dung to raise earthworms, earthworm dung to grow organic vegetables, and earthworm breeding ecological agriculture technology of yellow eel, that farmer earns millions a year and crushes many high-tech talents......

However, it was also said in that report that earthworms should be farmed with the manure of herbivores such as cow dung and sheep dung. Because, it seems that the pH value and ammonia content in the feces of carnivores and omnivores exceed the standard, which makes earthworms unbearable. Only cow dung and sheep dung are herbivore feces, which have more cellulose and less smelly taste, so that earthworms can be more adaptable, can be eaten immediately, and converted into earthworm manure that does not smell at all......

If it is human manure, it may need to be fermented or even digested into biogas before it can be used as feed for earthworms.

This is also normal, because human manure, as agricultural fertilizer, cannot be directly applied to the field. Previously, compost fermentation was required before it could be applied as fertilizer to the field. If it is not treated, it is easy to burn the seedlings by fertilizing them directly.

Although he didn't know the principle of burning seedlings, Ma Lin knew that the manure that could burn seedlings could not be used to raise earthworms. However, if it is processed, although it is not as popular as cow dung and earthworms, it can also be used to breed earthworms......

……

Of course, Marin didn't think that vermicompost was much more fertile than direct manure. In fact, there is limited difference in fertility, except that vermicompost is more easily absorbed by crops.

What Marlin values most is that earthworm manure does not smell. Moreover, it looks like dirt. Although it looks like one grain at a time, earthworm manure is odorless. Its resemblance to soil grains makes it difficult for half a person to guess its relationship with distinguishing, which is more conducive to Marlin's secret of hiding manure......

In addition, the farmed earthworms themselves are also a very good feed. For example, it is used to breed high-value yellow eels......

"Wait...... It seems like...... The yellow eel is a species from East Asia......" Marin suddenly remembered, it seems that the yellow eel (long fish) is a product of East Asia......

Although it is said that the yellow eel is a famous delicacy in later generations. However, in this era, there are no yellow eels in Europe. Even if Marin introduced yellow eel from the Ming Dynasty, the snake-like appearance of the yellow eel may not be eaten by Europeans. Perhaps, if you use earthworms to breed yellow eels, there will be a possibility that the yellow eels will not be sold......

However, it seems that earthworms are a very good delicacy for yellow eels and chickens, ducks and geese. In his previous life, when Marin was a child in his hometown in the countryside, he often saw the scene of an old hen digging the soil looking for earthworms to eat. Moreover, ducks seem to like to eat earthworms as well. Marin has seen a hilarious scene of two ducks dueling each other for an earthworm. Later, the two ducks each grabbed one end of the earthworm and swallowed it violently, and then the two ducks "kissed" it......

……

It just so happened that Marin had developed the kang house hatching technology before, which made there a lot of chickens, geese and ducklings in Beihai Country. But the problem is that farmers lack feed......

In these days, the price of grain in Europe is so expensive, and it is definitely an ultra-luxury to feed chickens. Therefore, after Marin promoted the incubation technology of the kang house, the most hatched are not chickens, but geese......

Why? Because geese eat grass, unlike chickens, which need to find live animals to eat or eat grains.

So, in ancient times, Europeans actually preferred to raise geese. Because, the cost of raising geese is low...... After all, geese eat grass......

As a result, the little match girl fantasized about a fragrant roast goose instead of a roast chicken before she died, which encouraged the high price of Europe, where chickens were more expensive and geese were more popular......

It's just that ducks and geese don't seem to like hatching eggs. Therefore, even if ducks and geese lay eggs, they are not as patient as hens to hatch. So, ducklings and goslings are rare. But as long as the goose hatches, it is much easier than raising chickens...... Compared to the tender meat, it is still better than chicken......

At present, after Beihaiguo set up a kang house to hatch, he got a lot of goose eggs and let the manor be stocked. Because, geese are herbivorous, and the cost of feeding is low.

……

But now, if Marin popularizes the technology of manure earthworm farming, he can obtain a large number of earthworms. Then, there is a lot to be done with chickens. Chickens that eat earthworms not only grow faster. In addition, it is said that the order rate of hens can also be increased......

That is to say, as long as you raise earthworms with manure, you can not only cover the source of manure, but also raise a large number of chickens. In the future, I'm afraid that ordinary people in Beihai can afford to eat chicken and eggs, which will definitely benefit the people!

As a result, Marin immediately ordered the establishment of earthworm farms in all manure processing plants in the country. Let the earthworms process the fermented manure into earthworm manure that others don't recognize, so that others can't guess the source of the nitrogen fertilizer......

At the same time, a large-scale chicken farm will be set up next to the earthworm farm. Both broilers and laying hens are on the horse, so that in the future, the people of Beihai will not lack chicken and eggs to eat......

"I'm such a genius! It not only solves the problem of secrecy of manure, but also develops a very promising chicken industry! Marlin smirked......