Li Ganzhu is in vain Xiao Tuo, the person who was born inside. I can still vaguely hear Xun outside, Dan Measuring Sound.

The laughter, the shouting, and the sound of the carts and wagons moving around were all heard one by one.

He was alone in the carriage in which Romon was riding, and he casually leaned his head lightly on the back of his chair and began to ponder the matter of the wheat stalk.

Just now, as those big cars passed by him, listening to the student's inadvertent muttering, he suddenly had an idea, and this thought could no longer be suppressed.

Luo Meng was a little excited at this time, and the reason why he was excited was not only because this matter could bring benefits to his territory, but also because, through this incident, Luo Meng finally found his understanding of nature.

"Biogas!"

It was a sudden idea to use all these straws to make biogas!

In the past, when we were on earth, there were very few applications of biogas in cities, and in some well-built towns and villages, because a large amount of food was grown. After each harvest, a lot of crops are collected.

Incineration is impossible, this practice is not only a waste of resources, but also a pollution to the environment.

In some rural areas, these wheat stalks and corn leaves are transported to the biogas chamber and turned into biogas, which can provide some flame use.

As an environmentalist, Romon has studied the application of biogas in rural areas, and he still knows a little about it.

In this world, there is no present coal, and after watching the history, it is said that the history of this world. It's only about 100,000 years, and it is natural that it will not form medium and oil.

In fact, Romon even believes that without these two, the world will never have the industrial grass life on the earth.

Thunder and lightning, there are still there, but this is the wind and water elements, the formation of the release of energy, this kind of thing has not been applied.

Except for extremely extravagant families, they may use magic to maintain the stove, so as to achieve the purpose of cooking and heating, I believe that no normal person will choose such a perverted method.

Naturally, lining and wood became the only common fuel.

But the number of human beings is so much, every day, there are so many people who need to cook, need to eat, and need to keep warm in winter, and the growth of the lining is extremely slow, even the fastest growing lining species, without a year or two, will never grow.

To cook a meal, you need a lot of wood. In winter, the stove fire is always burning. The Ling Cover Festival is made up of a book bar. Just book friends) uploaded

It is for this reason that many elves and druids have great prejudices against humans. It is believed that it is precisely because of the emergence of human beings that the beauty of the natural world will be destroyed.

Many contradictions are like this, because one or a few things eventually accumulate into disasters.

If there is biogas, it is different, animal manure, plant branches and leaves, through various microbial fermentation and decomposition, can produce biogas.

Biogas can be used for cooking, heating, and is also convenient, clean, and environmentally friendly, and the more Romon thinks about it, the more he feels that he should do such a thing.

In addition, the feed liquid and sediment discharged after fermentation by the biogas plant contain rich nutrients. It can be used as fertilizer and feed.

"First, it is necessary to make sure that this theory still exists in this world. ”

"Secondly, I have to open a new spell to replace the effect of the cement seal, the fifth-level mage spell, and the fifth-level druid spell have the ability to turn mud into stone, which can turn mud into stone, but this is too demanding, I only need to have a thin layer of hard shell in the basement of the soil to prevent leakage, and it is best to only have a first-level spell, so that biogas can be popularized. ”

"Thirdly, it is necessary to prescribe a spell that accelerates the fermentation of microorganisms, or to cultivate a harmless organism of this kind, so that the fermentation and decomposition can be accelerated, so that it can actually enter thousands of households. ”

"Incineration is too uneconomical, it only obtains a limited amount of flame heat, and the ashes are applied to the land. It is also less than a tenth of the decomposition and fermentation, which is too wasteful, and once the fermentation process is accelerated, it will be even more useful to turn biogas into a biofertilizer production field. ”

Just when his thoughts continued, the carriage stopped, lifted the curtain and looked out, the huge eagle statue in front of the Giant Eagle Academy had already appeared in sight, and it had arrived.

After getting off the carriage, Romon rushed into the principal's office, and when he ate at noon, he was all sent by people, but no one came out.

"Cassirer. At about four o'clock in the afternoon, Jerfa was holding a thick notebook when he came to the other side of the classroom and saw Cassirer coming back from outside, and he beckoned to him. "Come here, send this notebook to your teacher. ”

"Instructor Jafa, this is like—" Cassirer took the note in his hand, and it was still quite heavy in his hand. So, I asked curiously.

"It's a summary of the common plants in this world, your teacher said to take a look, I left it for him to turn it out, I'm going to go out soon. Send it to me.

Joffa said.

Cassirer showed a bright smile: "Don't worry, Instructor Jerfa, I promise to complete the task!"

Jaffa nodded in satisfaction and turned to leave.

Cassirer opened the notes in his hand, and now, it was all manually transcribed plant encyclopedia, which was really good.

"When the teacher runs out, I'll borrow a copy and keep it for myself to look back on. Cassirer made up his mind and took the notebook. Walk towards the principal's office. The principal's office is located in the southeast corner of the college, along the corridor, all the way to the end.

It's quiet nearby, and when there's nothing to do, no one will easily disturb the people who stay here.

When Cassirer walked over, the door was now hidden, and with a slight push, the door was silently opened.

But he tiptoed a step further. In the headmaster's room with the ensuite, Romon's faint voice sounded: "Cassirer, come in." ”

Cassirer closed the door softly and headed inside.

The outer room of the principal's banquet is used to receive guests, and the inner room is the office room.

When Cassirer walked in, Romon was scribbling something on the table when Cassirer came in. He raised his head and asked, "What you are holding in your hand is Instructor Jerfa's botanical notes?"

Cassirer handed over the note with a look of admiration: "Teacher, you are too powerful, in this world, is there anything you can't guess?"

Romon took the note and didn't read it right away. But. Smile: "There are so many things I can't guess." For example, how many meals can you eat in a day. I wouldn't have guessed. ”

Cassirer smiled and sat down next to Romon. "Lately, everyone's food has grown a little bit, but so has we've gotten bigger. ”

"That's right. Romon nodded.

This group of little guys is the time to raise it, plus the amount of food every day for the sake of memorization. They are all rising, but what he has is money and food, and he doesn't care about the little they eat, and he even told the canteen to let them improve the quality of food a little more and supplement enough nutrition for these students.

"Teacher, what are you busy with? You've been busy since you came back from the field, isn't it "something to do with those straws?" Seeing what Romon was drawing with his head down, Cassirer leaned his head over curiously

What appeared in Cassirer's sight was a drawing of what appeared to be a pool, as well as some pipes and extended patterns.

Cassirer had never seen such a strange picture, and after a few glances, he still didn't quite understand. "Teacher, you've been busy for a long time, are you painting this?"

Romon said, "You're blocking the light." ”

Cassirer sat back with a smile, but his neck was still stretched out in this way, as if Romon didn't explain it clearly, and he would stay here forever.

In desperation, Romon put down the pen in his hand: "You're curious about what I'm drawing now, aren't you?"

"If the teacher really can't say it, I won't ask. Cassirer said.

For this student, Luo Meng had a good impression, seeing that he wanted to know, Luo Meng thought that there was no need to hide it, so he pushed the drawing that he had changed for a long time before finally drawing it in front of Cassirer and explained: "This drawing. It's the result of my time here, in fact, you really guessed it right, I've been busy for half a day, actually. It's really for those straws. If you look at this picture, what can't you see?"

Listening to the teacher's words, Cassirer looked at it brightly. After looking at it for a while, he understood a little: "Teacher, are you going to put all the straws into this pool, strangely, you need to put water in it? I don't quite understand what you mean, don't I? Didn't those straws come back for cooking?"

Luo Meng smiled: "This is kept secret for the time being, it won't be long before you will know." ”

In the next few days, Romon really took people and began to dig pools and pipes in the school, and he was busy.

There are many curious people, but there is no one who can see the doorway. Even Jiefa and other instructors were puzzled by what Luo Meng did.

Every time he asked Romon about it, he said, "It won't be long before you know." ”

Prevaricate the past and get the people in the academy. All of them are itching.

Finally, on this day, Romon called Nick, Cassirer and others, saying that they had come to see the results of his experiments.

A group of people came to the sealed pool first. Romon explained with a little smugness: "Everyone must be curious, I got the straw here." He also made use of a small magic array. Come and catalyze them, why in the end. Now, I'm going to uncover the mystery for you. ”

As he spoke, he led the group to the nearby kitchen, where a fire was being lit for cooking.

But what made everyone curious was that in the stove, there was no sound of branches being burned and crackling, but there was still flames on it.

With a smile on his face, Romon explained: "This is the result of my experiment, using the rotting of the straw to produce fire, from today onwards, our school cooks, heats, and no longer has to cut down trees, although this is only a small step, but the druid does not need to cut wood to make a fire, whether it is for his own cultivation or feedback to nature, it is definitely a good thing." ”

"Really!" Jaefa couldn't help but step forward and check, his spiritual sense felt a pipe. The gas released from this pipe forms a flame.

Seeing that everyone was still immersed in shock. He decided to drop another bomb into it: "When these rotten crops are harvested, they can be used again to make those straws and make it a virtuous cycle" Of course, animal manure and rotten leaves can also be used, and compared with cutting wood and burning fires, using the gas produced by these rotten materials can be used to make a fire.

"But, as you can see, it works, but it requires a lot of investment, for example, a magic circle that speeds up the fermentation and decomposition. and materials used for sealing. ”

"Our next goal is to make it cheaper, preferably to just a level 1 spell. Even the level of zero-level spells. ”

After a pause, Romon began to explain his philosophy.

"First of all, nature is balanced, and unbalanced nature will brew all kinds of bitter fruits. ”

"Secondly, I do not approve of narrow wildism, there are many druids, strongly opposed to civilization. I don't take that against hunting and farming. ”

"Metabolism is the foundation of nature. What is metabolism? It is decomposition and nurture it. ”

"The so-called decomposition is the inability to make substances that nature cannot decompose, or other things. They are natural tumors, and they are decomposed for the next nurturing. ”

"On this basis, we promote diversity. ”

Jefa understood the previous words, but he didn't understand this diversity.

"I would like to say that, from the highest point of view, cutting down trees for burning does not destroy the foundations of nature, because the ashes of wood return to nature. ”

"However, it destroys the diversity of nature. A large number of forests have been cut down and a large number of plants and animals have been destroyed. ”

"Nature is not only a cycle of elements, but also a rich ecology of life built from this foundation. ”

"Ecological agriculture, first of all, does not violate the balance, and secondly, it is based on the principle of decomposition and tending, biogas, which can make wheat stalks, and other plants, accelerate the decomposition, which is not contrary to nature. ”

"And, because of this accelerated decomposition. Not only can you get flames, but you can also reduce the felling of wood. It can also be returned to the earth in the most natural form of bio-fertilizer, fertilizing the farmland, nurturing the lives of the next generation, and making them more prosperous. ”

"Biogas is just one small step in ecological agriculture. But it has fully explained my concept of nature and the essence of ecological agriculture. ”

"There will be more ways to come out in the future, I hope you will have a good experience today, and also bring those students to visit, let each student go back, write a feeling, I want to review. ”

"I hope that everyone can carefully understand my words and study together to make this druidic discipline. It can be developed from scratch. ”

"Of course, this preservation of diversity two we can describe with love, I believe this, is met with very little resistance. Romon said meaningfully.

Human beings like to eat this set the most, love is an eternal dream, put the need to maintain diversity, put love on it, and then spread it in the future, it shouldn't be rejected by human beings, right?

Of course, this can't be said much now.

The druids, who were present, were particularly shocked.

On the path of the druids, because they had always pitted humans against nature, and even agriculture against nature, these druids felt difficulties on the road to advancement.

But at this time, the idea proposed by Romon cleared the way. No wonder Romon can become a fourteenth-level druid, and he will definitely become a great druid in the future.

As for Jafa, there had always been a faint suspicion before, but now, all doubts have been swept away.

Naturally, the druids must not put forward such an idea, this is the difference of fundamental truths, and must not be covered up and hypocritical.

Luo Meng didn't notice that in the space of Shennongjiao, the world village was swaying happily, and the branch that accepted faith suddenly changed color. A faint golden color stained the branches.

In addition, on the branches, Luo Meng's image emerged, and under the influence of this, the breath of the holy light that spread to the misty world also seemed to change.