The rest of the day was spent collecting feed and feeding the fish.

Since July, the pumping machine borrowed from the reservoir was taken by the maintenance team for rescue and has not been returned.

Lu Changhua took the initiative to go to the material warehouse to eliminate the procedures for borrowing the machine, and did not borrow it again.

Being treated like this by others makes people feel uncomfortable, let alone Lu Changhua? !

The aerator in his previous life, Lu Changhua had seen it. The principle is actually very simple, that is, forcibly pump air into the water, so that the oxygen in the air dissolves in the water.

Knowing this principle, he kept wondering, how can we do it?

He suddenly remembered that Lao Lu's rubber-tyred car seemed to have an air pump and its own gas tank, because his rubber-tyred car was an air brake, so he needed these equipment.

In recent years, many machines and equipment have not been bought casually. For example, the accessories of the agricultural machinery company are only for the public, not for the private. Ordinary people don't sell it to you if they want to buy it.

Lu Changhua had to hit Lao Lu with his idea.

On this day, he came to the team headquarters and observed around Lao Lu's car.

"Xiao Lu, what are you doing?"

Lao Lu came out of the office and saw Lu Changhua looking down at the car, and asked curiously.

"Master Lu, are you good at this air pump? Is it not easy to break? ”

Seeing that Lao Lu was back, Lu Changhua straightened up, took out a cigarette, and handed him one.

Lao Lu stretched out his hand to take it, put it in his mouth, and moved up and down as soon as he spoke.

"It's good, the quality is okay, it's not broken."

Lao Lu reached into his pocket and took out a box of matches.

"What, why are you asking this?"

Lao Lu was curious, this little Lu usually didn't care about this.

Thorn~~

Lu Changhua struck a match and stretched out to Lao Lu's cigarette roll.

"Ouch, I'll do it myself."

Lao Lu said as he spoke, already stretching out his cigarette and lighting it on the match, took two puffs violently, and spewed out a puff of green smoke.

"Master Lu, this gas pump of yours is broken, you need to buy a new one, this gas tank is also leaking and needs to be replaced."

Lu Changhua pointed to these devices like a master and said.

"What?"

The cigarette in Lao Lu's mouth almost didn't fall off.

In these years, if the equipment is damaged due to improper use, it will be criticized and punished, which is a major work mistake.

Replacement equipment needs to be reported by the repairman, not the driver.

Now Lao Lu's rubber-tyred car is still in the company, and he has not yet contracted personally.

"Xiao Lu, what do you mean?"

Lao Lu was confused and didn't know why.

"Come, come, come. Master Lu, let me tell you......"

Lu Changhua pulled Lao Lu aside and muttered to him in a low voice.

"That's not going to work......"

"Woo, be quiet......"

"This ......"

"We don't hurt the public and private ......"

"That'...... too"

"I'll give the money......"

“……”

After half an hour of ideological work, Lao Lu reluctantly agreed to Lu Changhua's suggestion.

His gas pump was broken and needed to be replaced with a new one.

In these days, everything that breaks down is repaired, not replaced.

As for where the repairman is, Lu Changhua is still human.

Through Lao Pan making peace in the middle, Lu Changhua took out a cigarette, and the matter was over.

Lao Lu drove the car to the maintenance team to report for repair, saying that the air pump was broken, and after the repairman came to see it, he reported that it could not be repaired and needed to replace the parts.

This application was reported to Li Zhenguo.

Lao Lu's rubber-tyred vehicle is a special transport vehicle for the company, and it is an important means of transportation between the company and the field department.

After confirming the situation, Li Zhenguo immediately signed.

Later, Han Jianhua also exercised the power of the supreme leader.

"This Xiao Lu, how did you do it? Can the brakes be broken? ”

So I signed it too.

After a week's effort, the spare parts were sent from the agricultural machinery company in Bac Ninh County.

Lao Lu's rubber-tyred car was replaced with a new set of air pumps and gas tanks.

The old equipment in his car was scrapped.

Naturally, it was in the hands of Lu Changhua.

"Master Pan, make me a shelf and put these together."

"Okay."

According to Lu Changhua's intention, the air pump and gas tank were installed on the iron shelf.

That's not enough, you also need a power system.

The air pump needs to have an engine or motor to rotate it in order to produce high-pressure gas, which enters the gas tank and then passes through the rubber tube into the water.

In principle, the higher the speed, the more high-pressure gas will be generated. But there is an upper limit to everything, and if the speed exceeds the maximum upper limit of the air pump, the air pump is really going to break.

Therefore, it is not possible to use a motor.

Lu Changhua also does not have a matching motor, and if he uses the waste motor on other machines, the air pump may be wasted.

Only engine-type power can be used, after all, the speed can be adjusted by the throttle, so the air pump will be safer.

It's a coincidence.

Lao Pan has an engine in his hand. It's just that this engine is the engine of the Happiness 250 produced by the Huhai Motorcycle Manufacturing Plant.

Single-cylinder, two-stroke, 10 horsepower, 7.3 kW.

This is still Lao Pan went to the field department to find it by chance, the motorcycle has been scrapped, but the engine and gearbox are still intact, and it was dismantled by Lao Pan for five yuan.

This time, Lao Pan changed hands and poured fifteen yuan to Lu Changhua.

"Okay, put it on me."

In the eyes of the master fitters, there is nothing they can't do.

After the engine is installed, the gear disc is installed outside the gearbox and air pump, and the chain drive is used in the middle.

A plastic pot was used as a temporary fuel tank, and a fuel pipe was plugged into the carburetor of the engine.

One foot on the engine.

The gearbox is in first gear and the chain turns.

The air pump in the back also started working suddenly.

After stabilizing for a while, and then hanging the second gear, the chain rotated faster, and the air pump increased the strength of the compressed air.

In ten minutes, the needle of the pressure gauge has pointed to 2.5 kilograms, and further up it will enter the red zone, 3 kilograms.

When the valve of the gas tank is opened, the rubber tube snorts with high-pressure gas.

It's done.

After running for another half an hour, seeing that there was no problem, the engine was turned off.

He found a wheelbarrow, and a few more men worked together to load the iron monster into the cart.

He and Hu Dagui pushed it to the reservoir together.

It took half a month to make this aerator.

Put this monster directly on the head of the improvised trestle.

Then it was launched, and the work began suddenly.

Since there is no check valve at the outlet pipe head, it is necessary to pay attention when using it to prevent water backflow.

It is necessary to pump air into the gas tank first, so that the pressure reaches 3 kg, and then open the air valve, and control the air output, not too much.

Everything was fine, and then the outlet pipe was put into the water.

As soon as you enter the water, the bubbles tumble upward, making a splash the size of a washbasin.

Lu Changhua closed the small release valve again, so that the pressure in the gas tank would not decrease too quickly.

The two stared at the water surface for a while, and when they saw that the air output was stable and the splash was controlled within a certain range, they were satisfied.

"We still need to get some gas."

"Well, I'll go, I'm familiar with the oil depot."

Hu Dagui volunteered.

"Okay, you can take a pot."

In these days, the farms used some gasoline or diesel for private use, and they didn't spend money to buy them, they were all looking for people to ask for them.

Or maybe it's a personal society.

This pot is five liters and can last for several days.

With the self-made aerator, Lu Changhua felt much more comfortable.

Although there is still rain in August and September, the temperature is very high.

A lack of oxygen in the reservoir is inevitable.

Some time ago, there was also an occasional floating head phenomenon, but now with an aerator, the floating head phenomenon is becoming less and less.

The aerator is turned on at about ten o'clock every day, and it is turned on until about half past three in the afternoon, five hours a day, and the thunder does not move.

Due to the small amount of air discharge, the intake and outlet air in the gas tank are basically balanced, and the engine rotates in one gear at idle speed, which can basically meet the daily use.

Fuel consumption does not exceed two liters per day.

An autumn rain and a cold.

From the beginning of September, it becomes cold as soon as it rains.

This year's autumn harvest is still being prepared in an orderly manner.

At this time, Lu Changhua was also checking his harvest.

Twenty-three fodder fields, including five soybeans and two corn, were beaten into green fodder and mixed with fish food.

Now there are 10 soybeans and 6 corns left in the field.

Soybeans are harvested in early October, while corn is around mid-October.

It is only at this time period that it matures.

Although mechanized harvesting on the farm is labor-efficient, it is also very wasteful, especially in years when it rains a lot before the autumn harvest, and the harvester cannot get into the field.

If mechanical harvesting is forced, it is either a high harvest, especially soybeans, many of which still have four to six pods left on them, which creates a lot of food waste and leads to reduced yields.

Some people ask, why do you have to harvest high crops? Isn't it okay to have a low point?

If you lower the harvest, there is a good chance that the soybean seedlings will be uprooted and brought into the harvester with the soil.

In this way, the harvested soybeans will stick to the soil and become a "muddy face", and when they are sold, the grade will be lower, or no one will buy them, causing losses.

In order to avoid this, as long as the field is muddy and the harvester cannot work properly, it can only be harvested by hand.

This year, the proportion of manually harvested plots is still very large.

As for Lu Changhua's feed land, it is not bad.

Although the rain is heavy, it is discharged into the reservoir, and the ground is very dry, so that you can harvest it mechanically, and you can save yourself a lot of worry.