After finishing the work of the Demon City, Xiao Yifei returned to his hometown in Anhui.

As the saying goes, the mother is worried when she travels for thousands of miles. As soon as she gets home, Xiao Yifei enjoys a while of nagging.

"Xiaofei, why are you getting thinner? Sit down quickly. Old man, help me look in the pot. I'll buy some vegetables to see how thin Xiaofei is."

Xiao Yifei almost fell to the ground.

"Mom. I'm growing taller, okay? Where did I lose weight? I'm more than 20 kilograms heavier than before."

Unfortunately, my mother ignored him and ran out to buy vegetables.

Hei Nose is a heartless guy. At first, he shouted at Xiao Yifei. After feeding him for a few months, he had only been out for a month and didn't recognize him. Fortunately, he came up and smelled it, remembered Xiao Yifei, and then became honest.

Xiao Yifei reached out and touched the black nose. He lay down again and held Xiao Yifei's hand with his two claws, biting his fingers and playing.

My dad slowly wandered out of the kitchen and watched the black nose complaining with Xiao Yifei:

"This guy, you just left for two days and you are not willing to eat. It took a few days to get better."

After spending a day with his parents at home, Xiao Yifei took the initiative to go back to the countryside when he saw that his parents were busy decorating the two houses. Only here could he have the opportunity to organize his space.

The first thing is to do is to charge the excavator. The small excavator is blocked by the wall, and there is no way to see a machine outside in the yard.

When digging the roots of a tree, Xiao Yifei suddenly had a big brain. The film in the space was glowing, and this light energy provided the plant with photosynthesis. Can it also be used for solar power generation?

When he thought of it, Xiao Yifei took out a solar charging calculator and found that there was a door. This was really great. With solar power supply, the excavator no longer needed to charge outside. Moreover, the electrical power emitted by solar energy can also drive electrical appliances and water pumps. After the drip irrigation equipment is done, you don’t have to do it yourself. Just turn the switch on.

So he asked someone to design a set of solar chargers. Now he put them on the open space of the car. On several rows of simple steel racks, hundreds of solar panels continuously send electricity to the batteries. Rows of batteries, plus a huge inverter device, have become the source of power in the space.

He also disassembled the battery system of the excavator. Now he never charges it again. Every time the battery dies, he directly brings two charged batteries and reinstalls them, and then it can continue to work.

After several days of operation, he slowly mastered how to set the program movements. Each time he only needed to drive the excavator to the thick root system of the vine and start his custom digging action. The smart small digging will dig a large pit around the vine. Next, he only needed to connect the vine with the hydraulic arm and tear the grape roots with a cable.

Xiao Yifei looked at the corner of the cleared field, with pits of all sizes everywhere. This is definitely not possible. It must be flattened, and it must be deeply plowed and flattened before it can be put into use. However, deep plowing is either using animal power or using machinery. If you use animal power, you have to get a cow in. Xiao Yifei will not do it at all, and it is not high-end. It seems that he can only consider mechanical plowing.

As the economic conditions improved, the degree of mechanization in the countryside became higher and higher. Xiao Yifei found an excuse to go to his fourth uncle's house and checked in, and then moved to several in the village. He found that all of them were driven by diesel tractors.

Xiao Yifei first bought an electric excavator and hit him by accident. After getting it, he went to check the diesel engine. After checking it, he was shocked.

In general, diesel engines should be cleaner than gasoline engines, but in fact, there are some things in gasoline exhaust gas, such as carbon monoxide, nitrogen oxide compounds, etc., which are not short of them. In 2012, diesel engine exhaust gas was mentioned in the first group in the second group of human carcinogens list, and the same group included well-known harmful substances such as arsenic, tobacco, X-rays, etc.

After carefully searching the information, he knew that the reason why people think that diesel engines are clean is that many technical measures have been used to suppress and clean the combustion products of the diesel engine. But everyone knows that tractors are just a diesel engine, and then the smoke exhaust pipe. They are often seen running around with thick black smoke, and there is no cleaning equipment installed at all. In this way, the exhaust gas it emits must be much greater than the car exhaust.

The space of Osiris looks quite large, with more than 5 acres of fields, but in fact it is a hemispherical shape with a radius of 50 meters. Therefore, the internal volume is about 250,000 cubic meters, and there are not many plants inside. It is impossible to consume like the outside world and dilute those harmful substances.

Besides, even if the trees, grass and crops are consumed, the most particulate matter in the exhaust gas of the tractor cannot be absorbed. These particulate matter are the main components of the black smoke emitted by the tractor, and they are not something that the plants in the space can handle. Large particulate matter will slowly deposit, while small particulate matter, PM10, PM2.5, etc., will be suspended in the air for a long time, which is seriously harmful to health.

Because of this, Xiao Yifei specially installed solar power generation equipment and inverter equipment, and planned to use electric machinery as much as possible in the space in the future. If you use a tractor now, it will still be polluted? Although it is not very harmful once or twice, even if you cultivate the land, will you still sow the seeds? Will you still have to cultivate the land next season? It will definitely not work if you continue for a long time.

Excavators are all electric, and forklifts are also electric, so why no one has an electric tractor? But the land is not tilled, and it is not easy to use. Xiao Yifei plans to go to the town to take a look. If it really doesn't work, he may have to buy a tractor to deal with this matter first.

Xiao Yifei came to the place where agricultural machinery was sold in the town. There were some pumps, seeders, plows, etc. inside. He did not see any tractors. Xiao Yifei did not notice that the boss lady in her 40s stared at him for a long time:

"Are you Xiao University in the Xiucai House?"

Damn, why is such a weird name?

"I am Xiao Yifei."

"Oh, I've grown up so early in the blink of an eye. When you were in elementary school, you ran around town every day."

Xiao Yifei was very embarrassed. He wanted to tell the boss lady, can we not mention that back then? Who knew she continued to ask:

"Didn't you say you went abroad?"

"I went to Europe once, and I want to go to the United States next month."

"Oh, amazing, I'm worthy of being a college student."

Xiao Yifei quickly interrupted her:

"Why didn't I see a tractor?"

"What do you think of the tractor? Aren't you going abroad?"

"I'll take a look for my neighbor."

“The tractor is too big, in the back yard.”

Xiao Yifei came to the backyard and saw four very small hand tractors in the yard, four slightly larger ones, and two larger ones. Xiao Yifei definitely wouldn't consider small ones. Although it emits smaller pollutants than the larger ones, it will definitely work longer. That is not efficient, and the total emissions may be more.

After watching the tractor for a few times, Xiao Yifei sighed:

"It would be great if there was an electric one."

The boss lady laughed:

"How can a tractor be electric? You think it's an electric three-wheeler."

Xiao Yifei said casually:

"How is it impossible? Excavators are now electric."

"Excavator, it's impossible."

Xiao Yifei took out his cell phone and showed her several photos he took at the Paris Mechanical Exhibition, and also played a video of a smart little digger dancing.

The boss's wife was amazed:

"You said these people are so powerful that they can actually stuff the motor into the excavator."

Her words woke Xiao Yifei up. Yes, isn’t the electric excavator just to take out the diesel engine and stuff the motor in, and the tractor is also OK. Although there is no on the market, you can do it yourself. Isn’t it just to use batteries and motors instead of diesel engines? Of course, you may also have to consider the transmission.

Without hesitation, Xiao Yifei bought a large tractor, some supporting ploughs, graders, and seeders. He went to the merchants selling electric tricycles in the town to buy an electric tricycle with the largest power and battery capacity, claiming to be able to pull 1 and a half tons of electric tricycles. Fortunately, the two bosses agreed to help him drive home so that he could get the pile of things back.

That night, the pile of machinery entered the space, filling the marble square. After carefully studying these two machines, Xiao Yifei confirmed that his idea was feasible, but he didn't know whether the finally modified electric tractor could pull machinery such as plows.

But you can test it to see if you can use an electric tricycle to pull the plow. However, there is no fixture like a tractor behind the tricycle, so it is impossible to test it now.

The next day, he drove the car to buy a bunch of welding machines, cutting machines, and profiles. When he got home, he started to tossing. After a while, he welded a fixing device to the back of the tricycle. Unfortunately, the test results were very unsatisfactory. There was a problem with the fixing of the plough and the tricycle. If the fixing was loose, the plowhead would pop up and turn it to the ground. If the fixing was tight, it would be easy to lift the rear wheel of the tricycle. The tricycle was driven by the rear wheel, and it would not move at all when lifted.

Xiao Yifei scratched his head, how could this thing be done? After thinking about it, he saw the excavator's excavator arm, so he came up with a plan.

Soon, a fixture was welded behind the excavator's butt, and then the entire operation table turned back, and the digger pressed on the machine plowing plough, so that it had no chance of rising. The excavator dragged the machine plowing plough and climbed forward slowly in the field. Although the speed was slow, it could at least cultivate the land normally.

However, when you need to turn at the end of the plow, you have another trouble. After all, the excavator is not a tractor, and you cannot use hydraulic devices to lift the plowhead and you cannot turn at all.

Soon Xiao Yifei thought of a way again and used a cable to hang the machine plow on the excavation arm. When it was time to lift the plow head, the hydraulic arm was raised and the plow head was hung up. When it was time to cultivate the land, the hydraulic arm pressed down and the land could be cultivated again. Moreover, with the force of the hydraulic arm pressing, the depth of the cultivated land could be controlled, which was so convenient.

This excavator is temporarily able to plow the land with a machine plow, but what about the future sowing? And harvesting? It seems that we still have to find a way to change the tractor to electric. But that is the future, so let's deal with it like this now.

The land had a way to clean up, and then two trees with horns fell into his eyes again.

Axes are usually used to cut trees, but that is a technical job and a physical job, so Xiao Yifei will definitely not do it. If he uses a chainsaw like Bald Head, Xiao Yifei refused. Fortunately, he found that there are chainsaws on the Internet now, and he searched for a few laps in the county town but couldn't find them, but he ran to Xunyang to find this thing.

Xiao Yifei held a chainsaw in his hand and entered the space with a black nose. The black nose had a deeper memory of the space. After entering, he immediately started to pee everywhere to draw the terrain. Anyway, the room with valuables had already closed, so Xiao Yifei let it have fun.

Plug the power supply into the inverter device, press the button, and a buzzing sound came. Xiao Yifei put an oak tree to the ground. The sound of the trees falling to the ground frightened the black nose and ran away.

Xiao Yifei then cleaned the branches, then cut the trunk into more than a dozen sections of 1 meter long, and moved them to the marble square.

This is not that Xiao Yifei has nothing to do, but that he is preparing for future winemaking. Everyone knows that wine cannot be separated from oak, but he is not sure why it is. Anyway, it is right to use oak.

In fact, the effect of oak on wine is divided into two stages. In the fermentation stage, soft oak tannin can enhance the body structure of the wine, reduce the astringency of natural grape tannin, improve the harmony and complexity of the wine, and better maintain the aroma of the wine.

After the fermentation process is over, because the oak itself contains "tannin", it can quickly ripen the wine, making the wine more fragrant and closer to amber in a short period of time.

In addition, the porosity of oak allows wines stored in oak barrels to evaporate and oxidize to a certain extent, but does not cause the wine to deteriorate. About 10% of the wine can evaporate during the year, and most of them are alcohol and water, which will leave more aromatic compounds to make the wine more delicious.

Oak barrel-aged wine needs to be stored in a barrel for at least 6 months, and the common time ranges from 12 months, 16 months, 18 months, and 20 months. However, currently, there are only a small number of top wines of excellent years in the world that will age in oak barrels for up to 32 months. The more it is the unsweet "oak water", so the saying that oak barrels have been aged for 5 years is not credible.

It is precisely because oak barrels are so important to wine that a standard American oak barrel in the United States is worth $270, Eastern European oak barrels are worth $480, and French oak barrels are worth $600.

However, oak barrels cannot be used all the time. New barrels have more aromas, while old barrels will gradually decrease. As the number of times of use increases, old oak barrels are susceptible to contamination by adverse microorganisms. Therefore, some wineries claim that oak barrels that have been used for decades are actually the same as ordinary wooden barrels, and even worse than ordinary wooden barrels, because these old oak barrels contain less beneficial ingredients and need to be longer in storage time, and the ethylphenol produced in them will have a negative impact on the aroma of the wine. Generally, red wines should not be used for at most 5-6 years.

Therefore, oak barrels are consumables for wineries, and consumables of such high prices naturally come up with ways to find alternatives. Nowadays, many wineries use stainless steel barrels to ferment or aging, and add oak chips or oak flour to it. France approved the possibility of aging with oak boards in 2006, and passed the law on the use of oak boards during fermentation in 2009.

There are so few oak trees in the space, Xiao Yifei definitely cannot use them to make oak barrels, he can only make oak chips. He wants to try whether the oak in the space can give the wine a better flavor.

Then Xiao Yifei spread a few newly bought bed sheets on the ground, ran to the sheets with a black nose, sniffed a few times, and then began to practice tearing with its tender teeth on the sheets, shaking its head there.

Xiao Yifei pointed to the vineyard and shouted, "Black nose, go."

Although he couldn't understand, the black nose seemed to know that the owner was angry, so it stopped and looked at Xiao Yifei. Seeing that the owner pointed at the vineyard with a firm attitude, and the main hand was holding a long bamboo pole. It could only let go of its mouth and slowly walk towards the vineyard. Xiao Yifei looked up at the olive tree and looked for the place to start. He didn't notice that the black nose sneaked back, biting the edge of the bed sheet, and trying hard to pull the bed sheet into the vineyard to continue playing.

Xiao Yifei held the bamboo pole and knocked on the olive branch like a date. The ripe olives fell down. The poor black nose had no idea, so he was hit by the falling olives a few times.

Hearing the cry of the black nose, Xiao Yifei realized that the black nose behind him had actually ran back. He was whimperingly biting an olive to take revenge.

Xiao Yifei, who was amused and crying, could only drive away the black nose again and continue to use a bamboo pole to make olives.

In fact, olives are not harvested in this way. High-quality olive oil is picked by hand to avoid damaging the skin of the olive and causing the loss of olive oil. Even if it is a mechanical harvesting device, it uses mechanical holding of the tree trunk and uses vibration to make the olive fruits escape from the branches. Or there is a picking head with several vibration strips, which can be raised to the top of the tree, and the vibration method will also be used to shake the olive fruits from the branches.

Xiao Yifei's method is purely to collect dates. The famous "three-point shot with dates but no dates" is what Xiao Yifei did. Using this method on olives is to hurt the fruits and trees, but he has not found such a machine nearby now, so he can only dry it like this first. After cleaning and simply drying the olive fruits, they use the purchased spiral press to produce authentic virgin olive oil.

Then he added a drip irrigation device to the space. The entire system has not been fully formed yet. It only erected a 5-meter-high iron rack by the river, with a stainless steel circular water tower on it. Other submersible pumps, water pipes and drip irrigation ports are not connected. Because Xiao Yifei visited the vineyard in France and only looked at the surface with a glimpse of the light, many in-depth things in grape planting still need to wait until he bought the winery in California before asking what to do to be more scientific.

The reason why these things are prepared in China is that they are cheaper in China. For foreign artificial stainless steel water towers that cost hundreds of dollars, they may have to ask for hundreds of dollars, not to mention a set of solar power generation equipment worth hundreds of thousands of dollars.

Because some chapters are not easy to break out of context, 5K will appear, so I will treat them as two chapters, please forgive me.
Chapter completed!