[Clear waters and lush mountains-end]
Yue Xingwen and Jiang Pingce sat outside until 3:00 in the morning. The expected sandstorm did not come, and the two were too sleepy to take it.
When he woke up the next morning, Yue Xingwen found that their project was intact.
There was no wind last night, and the weather is rare today. However, if the sandstorm did not come, everyone could not rest assured. After all, their project had not been tested, and no one knew whether it was a success this time.
Yue Xingwen looked at Lin Manluo and asked, "Senior sister, do we have to wait for a sandstorm to confirm that there is no problem with the project before proceeding to the next step, or will we continue from today?"
Lin Manluo frowned and thought about it for a moment, then gritted her teeth and said, "Let's wait and see. If there are any loopholes, we are rushing to the next step. If the plants we planted are destroyed, it will be too late to replant them, and the funds will also be lost. won't be enough."
Jiang Pingce agreed: "The first phase of the acceptance is successful, and then the second phase is continued, which is more secure."
It's just that their projects are not accepted by higher-level professionals, and can only be handed over to the library for verification.
The next day, everyone will simply take a holiday, stay at the base to rest, and pay close attention to the weather outside.
Since there is plenty of light during the day, there is no need to stay outside to observe in person. Ke Shaobin only needs to put the small picture outside, and every few minutes, it is enough to take an image and transfer it to his laptop.
Twelve people sat together, chatting while waiting for the sandstorm.
The whole day passed, and the sandstorm still hadn't come. Liu Zhaoqing sighed: "This library doesn't come when it should come, and it's really annoying to have a surprise attack when it shouldn't come."
Yue Xingwen reminded: "Don't relax, keep vigil tonight."
In the evening, the students in the second group waited until 3:00 in the morning, and still did not wait for the sandstorm. Zhuo Feng whispered: "If the sandstorm doesn't come, we can't wait forever, right? I'm worried that the time for planting trees in the third stage will be different. not enough."
Lin Manluo gritted her teeth and said, "Wait for at most two days. If there is no movement the day after tomorrow, we will continue to the next step."
I don't know if the library was deliberately trying to kill their patience. The night was still peaceful. Until the afternoon of the third day, Ke Shaobin wanted to go out to take a look. Face. He immediately shouted excitedly: "Come here!" The other students hurried out and looked into the distance together.
The strong wind really drove the quicksand towards them, and the momentum was like a galloping horse! However, after encountering the first layer of barrier, the sand was partially blocked by the wall, and a lot of sand escaped from the sand outlet and continued to rush forward—
The billowing yellow sand rushed towards them, and the wind this time was much stronger than the first nighttime sandstorm!
The students were sweating in their palms, for fear that their projects would be destroyed again.
What is gratifying is that after being intercepted by layers of sand barriers, the amount of quicksand was significantly reduced. By the fifth floor, there was not much left, and by the sixth floor, the quicksand was completely blocked by the wall!
And the barrier they designed has a total of eight layers.
Lin Manluo almost jumped up excitedly: "Success!"
Ke Shaobin was also very excited, he looked back at the farmland not far behind him, and said, "There are still two layers of walls that are useless, that is to say, even if there is a more powerful sandstorm than this in the future, the quicksand will not flow to the farmland. ?"
Lan Yarong smiled and patted Lin Manluo on the shoulder: "Manluo is doing well. In this way, our task of preventing wind and sand fixing is half completed. These eight layers of barriers are enough to ensure that the farmland around the town will not be damaged."
Lin Manluo finally let go of her dangling heart in the past few days, and a smile appeared on her face: "Great, this is the result that everyone has calculated together, and now it has finally been verified!"
Yue Xingwen breathed a sigh of relief and looked at Jiang Pingce.
He was also very nervous these two days. After all, the funds in his hand were running out. The worst plan was to go back to the first floor to rebuild together after failing the course. But it turns out that their data calculation and sand table model drills are still very effective, and the engineering based on the model is very perfect!
It will never be like in the beginning, when the sandstorm comes, the defense project collapses directly.
Yue Xingwen concluded with a smile: "It is a wise decision to do the experiment first and then the formal construction."
Zhuo Feng nodded: "That's right. When the sandstorm passes, Manluo will start to set up the next stage of tasks!"
Their current project only prevents quicksand from invading farmland and ensures that residents' farmland is not affected, but does not fundamentally solve the problem. The test requirements are to manage the environment and improve the ecology. Therefore, they must not only prevent, but also control the key.
Lin Manluo opened the project plan and said quickly, "The last stage is to level the sand dunes to build land." She pointed to the distance and said, "The large sand dunes in front are the key reason for the sandstorms when the wind is blowing. Let's The team has Xiao Nian from the Department of Architecture, and the work of leveling the sand is very easy to do, just use the bulldozer to level the sand dunes."
Zhang Xiaonian took out the mapping paper, glanced at the data, and said, "For such a large area of sand dunes, it will take me about... half a day to get it done, okay?"
Lin Manluo smiled and said, "It's been a long time. Your ability is much more efficient than a normal construction team."
Yue Xingwen asked: "The sea buckthorn you chose before can grow in the sand, but if the sand is not firm enough for the plants to take root, and the wind blows, will the trees we plant be blown down?"
Lin Manluo nodded: "Yes, although plants such as sea buckthorn and Salix can survive in harsh sandy land, they cannot live directly in the sand. This land needs to be remodeled. The best way is It is to divert water and pull sand to create land.”
Ke Shaobin was stunned: "Diversion?"
Lin Manluo said: "Since there are towns and arable land nearby, there must be water sources. We need to build some diversion channels to bring the water sources to water, create a sandy land suitable for planting plants, and then plant the saplings."
Jiang Pingce reminded: "There are still 9 days until the end of the exam, is it too late?"
Lin Manluo thought for a while, and said, "It should be too late. We have junior brothers from the School of Architecture, and we can dig canals very quickly."
Yue Xingwen immediately made a decision: "Okay, I will find water sources with Pingce and Ke Shao, and the others will help Xiaonian level the sand dunes. Senior Sister Lin, you should make a plan for planting trees as soon as possible, and look at the canals and plants. How to distribute."
The people began to divide their work.
With Jiang Pingce's parabolic motion of the coordinate system and the radar reconnaissance of the small map, the three of them quickly found a water source nearby, and diverted water from here. The speed of digging the pits with the excavator is very fast in the year. When the time comes, the dug pits will be covered with a layer of cement, which is a simple water channel.
At the same time, Lin Manluo also discussed with his teammates to draw an area for afforestation, and designed the distribution of the canals. The canals are arranged vertically and horizontally to form a "field" shape, which can be watered in all directions. Plants are planted in the squares in the middle. , the final remodeled afforestation project will be more aesthetic.
After doing all the preparatory work, Zhang Xiaonian started construction.
His excavator skills have now reached level 4, and the speed is several times faster than at the beginning. In just one afternoon, Zhang Xiaonian completed the projects of leveling the dunes and digging the canals.
Everyone rested at the base overnight and got up to work again the next morning.
Lin Manluo said to Yue Xingwen, "Xingwen, how much money is left?"
Yue Xing Wen said: "If you buy sea buckthorn seedlings, you can buy thousands of them."
Lin Manluo opened the store and looked at it, and said, "Buy some more grass seeds. I saw that grass seeds are very cheap, and buying a few kilograms is enough to plant a large piece. If the seeds are sprinkled, even if they only survive half, the whole piece will not survive. Environmental improvements in the area are also helpful.”
Yue Xingwen nodded. According to Senior Sister's advice, the remaining funds bought about 1,000 sea buckthorn saplings, a few kilograms of grass seeds, and tools such as shovels. 12 people began to plant trees separately.
During the annual Arbor Day, the school often organizes students to plant trees. Yue Xingwen still remembers that when he was a freshman in high school, he planted a willow tree in the open space behind the school. Later, he and Jiang Pingce went back to his alma mater. , which can be used by the younger brothers and sisters to enjoy the shade.
How long does it take for trees planted in sandy land to grow
In order to prevent the students from planting the trees crookedly, Jiang Pingce deliberately calculated the distance and used a triangle ruler to draw the entire field-shaped transformation area into a chessboard-like coordinate system. The distance between the two trees will be the same."
Yue Xingwen held back a smile and said, "Is this the obsessive-compulsive disorder of the mathematics department?"
Jiang Pingce said: "It will be ugly if the trees are arranged in a disorderly manner, so let's make them tidy." He paused, and then said, "What's more, can't sea buckthorn bear fruit? After a few years, these trees will grow and mature. When the result is finished, the arrangement is neat and convenient for local residents to pick.”
Yue Xingwen nodded in agreement: "Well, Pingce is still thoughtful. Everyone will plant trees at the intersection according to the coordinate system!"
Lin Manluo reminded: "Don't dig the hole too deep, so that the roots and stems of the saplings will be submerged, and the saplings should be fixed about 15 centimeters up! Remember to water them after planting."
Yue Xingwen said: "You don't need to water, I'll just let it rain when the time comes."
The crowd stood in 12 rows, each planting a row.
Because Jiang Pingce had drawn lines on the ground and stipulated the coordinates of each dead tree, everyone planted saplings one by one according to the coordinates, even if 12 people planted trees at the same time, it would not be chaotic.
The more trees are planted, the more people will find out... The neat ones look really good!
Thousands of saplings are divided by 12 people, and each person needs to plant about 90 saplings. In order to catch up with the work, everyone simply stayed overnight. It took a day and a night to plant all the saplings. water again.
Everyone was a little worried when they stood in the distance - the trees they planted by themselves did not know how much survival rate they could have? They are a group of laymen, and they have done their best to achieve this, and then they can only resign themselves to fate.
Yue Xingwen looked at this spectacular project and said with emotion: "It's hard to believe, it was made by 12 of us."
Jiang Pingce said: "With the help of supernatural powers, we can complete it in such a short time. There are still 6 days until the end of the exam. Next, everyone should not be careless and consolidate the results."
Everyone nodded.
In the next time, everyone went to the woods every day to make a circle, and watered the areas that were short of water in time. When the wind is strong, in order to prevent the saplings from being blown down by the wind, they also reinforce them with triangular stakes.
Time flies, their 1 day is equivalent to 24 days in this world.
Those saplings actually sent out green shoots at a speed visible to the naked eye!
Seeing that one sapling after another successfully survived, everyone was very excited.
On the last day of the exam, the picture in front of you suddenly changed, and a line of words appeared in everyone's floating box: "Congratulations to the 183 research group for passing the exam. What you see is the sand scene ten years later."
In the distance, the sea buckthorn they planted grew rapidly as if enchanted. Between the green leaves, a large piece of orange fruit was formed, and the dense orange fruit the size of a small bean was connected together, stretching for thousands of meters. Spectacular!
Ke Shaobin looked at the fruits, almost drooling: "Just to see, not to eat?"
Lin Manluo was so excited that her eyes filled with tears: "This is the scene ten years later, everyone has worked hard!"
They planted every tree with their own hands, and at that moment, the sense of accomplishment in everyone's heart was beyond words.
It is precisely because of their efforts that ten years later, this piece of land, which was originally barren, desolate, and plagued by quicksand, appeared a large number of green plants full of vitality and produced the sweetest fruits.