Traveling through the Great Northern Wilderness and marrying the most beautiful educated youth.

The medicine preparation and acceptance form from the Yongfeng Brigade had just been locked in the metal cabinet when Old Gu came in from the maintenance shed carrying four measuring cylinders.

The water in the four graduated cylinders is at the same level.

But he didn't look well.

"Team Leader Han".

"I also went to put it out for half a minute."

"It's a significant increase compared to the old number."

Tian Xiaoman leaned closer and gestured with her fingers.

"All four are the same."

"Is there anything wrong with the showerhead?"

Old Gu slammed the measuring cylinder onto the table.

"The same amount."

"That doesn't mean the criticism is correct."

"Four people went the wrong way together."

"You can even calculate the location now?"

Wei Dacheng picked up the equipment inspection form and flipped to the section on spray head testing.

The four measuring cylinders are level.

The nozzle is clear.

Not a drop leaks.

I remember everything.

But within half a minute, how much water flowed out? No one counted.

Han Changsheng raised his eyelids.

"A box of medicine."

"Six hundred acres should be covered by air."

"Four hundred acres are now empty."

"Two hundred acres remain."

"Should I go get some spray too?"

Tian Xiaoman scratched his head.

"Shall we pack another box?"

Xu Chunyan put the pen cap back on.

"I ate too much earlier."

"It was added later."

"The total acreage is sufficient."

"The bean sprouts can help with the medicine from the front."

"Spit it back?"

The room fell silent.

Su Qingyun opened the drawer and took out a blank sheet of paper.

Wei Dacheng handed over the pen.

Su Qingyun continued writing.

Spray dosage calibration sheet.

Standard application rate per acre.

Work speed.

Flight altitude.

Effective spray width.

Number of nozzles.

Nozzle specifications.

Work pressure.

Half a minute's worth of data usage.

Number of acres covered by a single container.

Ground test spray.

Aerial nuclear coating.

Liquid volume per flight.

Actual working area.

Check the remaining liquid.

Aircraft mechanic.

Pilot confirmed.

Local person in charge.

Tian Xiaoman looked down and counted them once.

"Seventeen items."

Su Qingyun flattened the paper.

"Sprayed the same."

"And it has to be sprayed just right."

"How much should be consumed per acre?"

"You can't rely on just looking."

……

It was a little after 8 a.m.

A Jiefang truck, leading two medicine carts, was parked at the entrance of the work station.

The car door opened, and a tall man stepped out.

Two pencils were clipped to the pocket of the gray cloth jacket.

He was holding a map folder in his hand.

After he entered, he first glanced at the four measuring cylinders, then looked at the new sheet on the table.

Only then did he extend his hand.

"That Comrade Su Qingyun, right?"

"I'm going to Yuejin Commune too."

"Dongfeng Squadron".

"Secretary Ma Deshan."

Su Qingyun shook hands with him.

"Secretary Ma."

Which plot of land?

Ma Deshan spread out the map.

"Nangang soybeans".

"Three thousand two hundred mu."

"Meadow borer."

"Ten networks and forty-seven articles."

Insect infestation.

task.

Oilseeds.

Medicine liquid.

Review.

the weather.

Pharmaceutical acceptance.

Inspect the spraying equipment.

Fuel acceptance.

Aircraft loading list.

Runway acceptance form.

Obstacle survey form.

Ground-to-air signal confirmation slip.

Clearance confirmation form.

Meteorological continuous observation log.

Medicine preparation and acceptance form.

There are sixteen items in total.

Ma Deshan patted the medicine container.

"Four thousand eight hundred kilograms."

"One and a half kilograms per mu."

"Not a single point is wrong."

He finished speaking and his gaze fell on the dosage calibration sheet.

The smile on his face slowly faded.

"What kind of test are we doing this time?"

Su Qingliang leaned against the door and gestured towards the measuring cylinder with his lips.

"Let's inspect this box of medicine."

"How far can it fly?"

Ma Deshan frowned.

"Airplane first-aid kits have markings."

"One box weighs 960 kilograms."

"Fly over 640 acres."

Logically speaking...

"How can division be done wrong?"

Old Gu raised his eyelids.

"The medicine box number can't be wrong."

"The nozzle will change."

Ma Deshan turned to look at the maintenance assistant who had followed him.

"Did you touch the showerhead?"

A thin-faced man took half a step forward.

"We tested the waters yesterday."

"There are several blocked eyes."

"I also went to get a needle and pricked it."

Old Gu stood up.

"How thick is the needle?"

The thin-faced man pulled a large needle for sewing burlap sacks from under his hat brim.

"This is it."

Old Gu took it and compared it to the nozzle.

The needle tip had just gone in.

The needle's belly was also forced in.

He looked up and spat.

"Pooh."

"Is this a jet nozzle?"

"You're enlarging the nozzle."

The thin-faced man blushed.

"I'm also worried it'll get congested again."

"Make your eyes bigger."

"The medicine was dispensed quickly."

Han Changsheng picked up his flight cap.

"Go to the field."

"I'll go check it out too."

"How much pleasure can it possibly bring?"

……

South Hillside.

Two An-2 helicopters are already parked beside the runway.

Below the spray bar, a row of cleaned spray nozzles hangs.

As soon as Ma Deshan got out of the car, he pointed towards the airplane.

"I tried them all last night."

"Every one of them is leaking water."

"Even the fog is white."

Old Gu didn't respond.

He removed three spray nozzles and measured them with calipers.

The first one. The aperture is a size larger.

The second one. It has burrs on the sides.

The third one. It's already been poked into an oval shape.

A thin-faced man squatted down beside him, muttering to himself.

"Just a little bit short."

"How much more water can be produced?"

Old Gu tossed the sprayer into his palm.

Don't guess.

"Get some water."

Fill the medicine box with clean water.

Work pressure. We need to print the numbers they set last night.

Four measuring cylinders. Each cylinder is used to collect water from one of the four spray nozzles.

Thirty breaths have passed.

Tian Xiaoman closed the valve.

Four graduated cylinders. The height difference is minimal.

But when Wei Dacheng turned the abacus, his hand stopped.

"Calculated based on all nozzles."

"149 kilograms per minute."

Xu Chunyan looked down at the calibration numbers.

"The standard should be 120 kilograms."

"Twenty-nine kilograms more."

The smile on Ma Deshan's face vanished instantly.

"One box weighs 960 kilograms."

"How many acres can be saved by flying less?"

Wei Dacheng checked the abacus again.

"Based on your traffic..."

"It hasn't reached 520 mu yet."

"The medicine box is almost empty."

Ma Deshan stared at the graduated cylinder. He remained silent for a long time.

The thin-faced man rubbed his hands together.

Logically speaking...

"A place with lots of insects."

"It's good to take more medicine."

Xu Chunyan picked up the task sheet.

"The dosage of this herb is set at 1.5 kilograms per mu."

"You got a little over one kilogram and eight ounces."

"It's not about eating a little more."

"They used bean leaves to test the medicine."

Han Changsheng raised his hand and pointed to the map.

"Unit 1, first box."

"I'll also go and photograph the 640 mu (approximately 46.7 hectares) of

"It flew to about 500 acres."

"The spray nozzle is out of spray."

"The more than one hundred acres behind."

"What's missing from the sky?"

The thin-faced man opened his mouth.

He didn't say a word.

Ma Deshan took off his hat and patted it twice on the hood of the car.

"I'm going to the commune too."

"We've already reported 3,200 mu for today."

"Replace the spray nozzle now."

"It will affect takeoff."

"this……"

Su Qingyun glanced at him.

"Let's delay the flight a little longer."

"The completion count is accurate."

"Take off now."

"Three thousand two hundred acres can only be written on paper."

Ma Deshan gripped the brim of his hat. His face darkened slightly.

He turned around and pointed at the thin-faced man.

"Change."

"Who made this a big mess?"

"Who will switch with Old Gu?"

Don't make a big deal out of nothing.

"The needle can go in."

"That doesn't mean we should just poke it in."

……

Old Gu opened the equipment box.

There is a pack of spare spray tablets inside.

Each one was wrapped in oiled paper. The markings were written on the outside.

Old spray nozzles. Remove them one by one.

New printing plates. Packed one at a time.

After installation, first turn on the water at low pressure.

Then adjust to the workload.

It is answered every half minute.

First time.

127 kilograms per minute.

It's still high.

Old Gu turned the pressure regulating valve back halfway.

Second time.

119 kilograms.

Wei Dacheng was about to write it down.

Han Changsheng raised his hand.

"Again."

Ma Deshan glanced at the sun. His lips moved slightly.

They didn't urge me after all.

The third time.

120 kilograms.

Four-section spray bar. The difference is less than the bottom of an enamel tank.

Old Gu then nodded.

"The number on the ground is correct."

"We'll have to wait and see."

Ma Deshan was stunned.

"Why aren't you loading the medicine yet?"

"Fill in clean water first."

Han Changsheng put on his flight cap.

"I'm going to fly there too."

"Speed. Altitude. Spray width."

"Let's talk about it after we get them all right."

……

On the wasteland next to the runway.

Every twenty meters, a black tarpaulin is laid out.

On the tarpaulin, absorbent paper is pressed down.

Unit 1 only holds 300 kilograms of clean water.

After Han Changsheng takes off, proceed to the work area at the designated operating altitude.

First trip. Speed: 155 kilometers per hour.

The second trip. 160 kilometers.

The third trip. 165 kilometers.

Every single trip, Tian Xiaoman timed it.

Wei Da Chengdu recorded the markings on his medicine box.

After the plane landed, Xu Chunyan collected the absorbent paper one by one.

The first time. The water droplets on the paper are dense.

There is also overlap on both sides.

The third run. The middle was just right. The edges were sparse.

The second time. Within a 20-meter spray width. The water droplets were most evenly distributed.

Wei Dacheng used the abacus to calculate twice.

"One hundred and sixty kilometers."

"Three meters high."

"Effective spray width of twenty meters."

"One hundred and twenty kilograms per minute."

"One and a half kilograms per mu."

"All correct."

Ma Deshan picked up three pieces of paper and stared at them in the light for a long time.

My finger stopped on the first one.

"Fly slower."

"So, you'll just have to use more pesticides in the fields?"

Han Changsheng took off his flight cap.

"Traffic volume remains unchanged."

"Flies slowly."

"One can stay on a plot of land for a long time."

"Eat more naturally."

Ma Deshan looked at the third picture.

"Soon?"

"The medicine is saved."

"The insects are saved too."

Su Qingliang chimed in from the side.

"It saves me the trouble of writing a follow-up examination form tomorrow."

Ma Deshan turned around and glared at him.

"You brat."

"Don't even think about it, I'll go get a veil too."

But he didn't put down the three pieces of paper in his hand.

……

12:40 PM.

Northwest wind, level 2.

The wind direction is consistent at all three locations.

The work area has been cleared.

Security was in place at all four locations.

The actual track length is 702 meters.

The oil is clear and translucent.

There were no water droplets.

Four thousand eight hundred kilograms of liquid medicine.

The sampling at the top, middle, and bottom is consistent.

Gao Jianjun turned the abacus twice.

"Unit 1".

"The first flight weighed 960 kilograms."

"Unit 2."

"Nine hundred and sixty kilograms."

"None of them exceeded the limit."

Han Changsheng sat down in Unit 1. First, he checked the signal. Then he checked the wind direction.

Finally, he looked at Tian Xiaoman.

"dose?"

Tian Xiaoman held up the calibration sheet.

"Use 1.5 kilograms of liquid per mu!"

"Speed ​​160!"

"Three meters high!"

"Effective spray width of twenty meters!"

"120 kilograms per minute!"

Han Changsheng nodded.

"Remember the takeoff."

Two An-2 helicopters sped off the runway, one after the other.

Ma Deshan stood beside the medicine cart.

This time, I didn't check the plane first.

He stared at the markings on the medicine box, then at the red line on the map.

The first flight landed.

Wei Dacheng first calculated the area.

640 mu.

Tian Xiaoman checked the remaining liquid again.

Unit 1. Less than three kilograms remain.

Unit 2. Four kilograms remaining.

Ma Deshan reached out and touched the empty medicine box.

"One box."

"It really covers 640 acres."

Old Gu raised his eyelids.

"It's not the first-aid kit that obeys."

"It's about flow rate, speed, and spray width."

"Not a single one was in trouble."

……

Before the third loading of explosives.

The thin-faced man saw on the bean leaves in the distance. The medicinal mist wasn't very white.

While Old Gu was checking the oil, he reached out and turned the pressure regulating valve.

"I'll also raise it by half a deduction."

"The fog is thicker."

"The cadres also look like they've been thoroughly attacked."

Tian Xiaoman was holding red paint and drawing lines on the valve nut.

Upon hearing this, she raised her hand and slapped his hand away.

"You still dare to touch it?"

The thin-faced man's face stiffened.

"I'll go too and just mention a little something."

"It's alright."

Ma Deshan walked over from behind the medicine cart.

He first looked at the valve, then at the man's hand.

"Those twenty-nine kilograms from this morning."

"Haven't I taught you a lesson yet?"

The thin-faced man shrank his neck.

"Misty White".

"Locals know what's going on when they see it."

Ma Deshan raised his hand and slapped the three test spray papers onto his chest.

"The locals know what's going on."

"Does this mean soybeans need to take more medicine?"

"You're in charge of the equipment."

"Regardless of the officials' feelings."

"Stand aside."

The thin-faced man held the test spray paper. He didn't dare touch it again.

Old Gu walked back. He saw the red paint on the valve aligned. Chaotian Xiaoman nodded.

"Every flight landing."

"Let's look at the laning phase first."

"The thread is half-misaligned."

"Re-measure the traffic."

The next three sorties.

The pressure regulating valve did not move.

Each box of medicine was placed according to the calibrated area.

One box wasn't empty by early morning.

There wasn't a single box left.

……

Before it gets dark.

The last aircraft landed.

Old Gu removed the four spray nozzles and tested them one by one.

The traffic volume remained unchanged.

The red paint lines remained untouched.

Gao Jianjun lay on the cover of the oil tanker. He counted the numbers on the abacus twice.

"Five sorties."

"Nine hundred and eighty liters of oil were used."

Tian Xiaoman carried the medicine container and then began counting off.

"Installation solution".

"Four thousand eight hundred kilograms."

"Seven kilograms of liquid remain."

"Recycle according to regulations."

Wei Dacheng spread out the map.

Nangang soybeans. All marked with a red pencil.

"Practical exercises".

"Three thousand two hundred mu."

"Use 1.5 kilograms of liquid per mu (unit of land area)."

"No empty boxes were prepared in advance."

"There is no diluted medicine."

"All correct."

Xu Chunyan laid out the fallen papers from the beginning, middle, and end of the field side by side.

There are three pharmacies. Their density is roughly the same.

Adjacent routes connecting are also correct.

Ma Deshan took the work order and then flipped through the spray dosage calibration sheet from beginning to end.

When I saw that record of high data usage, my finger paused.

"President Su."

"I'm going today too."

"It's like calling it a needle in a burlap sack."

"More than 600 mu were damaged."

"The nozzles are all dispensing medicine."

"It doesn't mean that one acre of land is just the right amount to eat."

Su Qingyun pushed the inkpad over.

"How will we test it later?"

Ma Deshan pressed his handprint again.

"First determine the dosage per acre."

"Reset the speed, altitude, and spray width."

"Get water in half a minute."

"How many acres can one box cover?"

"Let's calculate the numbers."

"Who dares to look at the fog and see if it's white or not?"

"I'll go call him first."

"Hold the measuring cylinder up clearly."

The thin-faced man stood at the back. He added in a low voice.

"I'll go to the back too."

"We no longer need burlap sacks or syringe nozzles."

Old Gu raised his eyelids.

"You'd better not even touch the showerhead."

Laughter erupted from the crowd.

The thin-faced man scratched his head, not daring to retort.

……

The next afternoon.

Xu Chunyan returned from the Dongfeng Brigade.

She placed the follow-up examination report on the table.

"Nangang soybeans".

"More than 80% of the live insects have been suppressed."

"The beginning of the field. The middle of the field. The end of the field."

"The effect is about the same."

"There is no diluted medicine."

"No burnt leaves were found."

Wei Dacheng opened the new folder.

Insect infestation.

task.

Oilseeds.

Medicine liquid.

Review.

the weather.

Pharmaceutical acceptance.

Inspect the spraying equipment.

Fuel acceptance.

Aircraft loading list.

Runway acceptance form.

Work area obstacle survey form.

Ground-to-air signal confirmation slip.

Work area clearance confirmation form.

Operational meteorological continuous observation report.

Medicine preparation and acceptance form.

Spray dosage calibration sheet.

There are seventeen items in total.

He raised his head.

"President Su."

"This picture."

"How do I write the number?"

Su Qingyun picked up the pen.

Write it on the cover.

The Northern Wilderness Voyage, Part 15.

He pressed the spray dosage calibration sheet behind the medicine preparation and acceptance form.

Then he put the spray nozzle, which had been punctured into an oval shape, into a paper bag and tucked it inside.

Wei Dacheng counted them once.

"Seventeen items now."

Su Qingyun closed the folder.

"One picture."

"Seventeen things."

"One thing is missing."

"It's not finished yet."

Han Changsheng stood at the doorway. He glanced at the four clean measuring cylinders.

"The nozzle is dispensing medicine."

"That only means it's not blocked."

Su Qingyun locked the metal cabinet.

"Airplanes don't care whether the fog is white or not."

"Yes, I admit it."

"On a mu of land."

"How much medicine was actually left behind?"