Escape From the Library

【Green Water and Green Mountains-02】

At exactly 14 o'clock in the afternoon, everyone's eyes went dark at the same time, and then they appeared in the examination room of the second course "Green Water and Green Mountains" of the School of Environment.

As soon as they entered the examination room, everyone was almost blinded by the blowing sand.

Yue Xingwen wanted to speak, but ended up eating a mouthful of sand. While spitting sand beside him, he quickly typed on the research group channel: "Is the School of Environment struggling with sandstorms? It's this kind of weather again! "

Lin Manluo looked around and said, "It's different from the last class, this is not a doomsday environment, and the sandstorm seems to be temporary, maybe it will be over in a couple of days."

She turned around, pointed to the small town not far away, and said, "The towns near the desert are easily affected by the desertification of the land. Once the wind blows, this kind of sandstorm will form. I have seen it in reality. "

Liu Zhaoqing complained: "The exam requires us to prevent wind and fix sand, but they didn't give us any props?"

As soon as the voice fell, a prompt popped up in the upper right corner: "The exam is starting. The windproof and sand-fixing area is 500 meters ahead. The team leader, please allocate the funds in your hands reasonably and purchase the props you need. Note: the wrong purchase cannot be returned. I request you If this sandy land is well managed within a year, the time will pass faster during the exam, 1 hour = 1 day."

The "Cell" course of the Academy of Biological Sciences also accelerated the speed of time. They only took ten hours to produce a baby that could only be born after 10 months of pregnancy.Nowadays, the time of this course is faster, 1 hour = 1 day, and the management is completed within one year, which is 365 hours of exam time.

Jiang Pingce said in a low voice: "365 hours, about 15 days, to complete the work of windbreak and sand fixation, this is not a small difficulty."

Ke Shaobin said: "If 1 hour equals 1 day, if we sleep for 7 hours at night, wouldn't that be equivalent to 7 days? What if we wake up and all the saplings planted are dead!"

Time passes faster and every hour counts.Yue Xingwen thought for a moment, and said: "We are 12 people, divided into 3 groups, and we will take turns to be on duty 24 hours a day. We can't all fall asleep."

Xu Yishen rubbed his temples helplessly: "It seems that we have to build a base again. Everyone's board and lodging are on the front line. If something happens, we can deal with it in time."

Lin Manluo said bluntly: "Let's go, first go to see the venue, and then figure out what to buy."

Everyone followed the course prompts to the area 500 meters ahead.

There is an endless desert in the distance. The area where they need windbreak and sand fixation is just at the junction of the desert and the farmland. It can be seen that part of the farmland has been covered by sand, and the quicksand is gradually invading. The problem of land desertification is very serious. If you sit idly by, The desert will spread forward inch by inch, eventually affecting the towns inhabited by humans ahead.

The so-called wind-proof and sand-fixing means to prevent quicksand from invading forward and ensure that human cultivated land is not affected by sand and dust.

A big sign was erected not far ahead, which read: "Green waters and green mountains are mountains of gold and silver."

Ke Shaobin pointed at the sign, dumbfounding: "The courses in the library really follow current events! Our hometown's tourist resort also has such a sign."

Liu Zhaoqing said: "Our hometown also has them."

Lan Yarong said: "Over there, the expressway is full of such slogans."

If it wasn't for the fact that the environment is a library, everyone would even have the illusion that they have traveled back to the front line of environmental transformation in reality.

Lin Manluo asked, "Xingwen, let's see how much money we've been given this time?"

Yue Xingwen opened the channel of the research group and entered the word "fund", and soon a message popped up: "For this course, the 183 research group received a special rectification fund of 10 yuan, which can be used freely. The remaining money cannot be exchanged for points, and cannot be brought. Out of the examination room."

Everyone breathed a sigh of relief when they saw so much money.

Yue Xingwen said: "Well, take out 1000 yuan, Ke Shaobin Xinyan, Qin Lu and Qin Miao will go to a nearby town and buy back 15 days' worth of food at one time. The staple food is instant noodles, pickles, etc. for storage. Yes, you can figure out the rest."

After receiving the money, the four immediately set off to buy things.

This world is not the end of the environment. Judging from the surrounding farmland, although the lives of the residents of the small town have been affected to some extent, it has not reached a level where they cannot survive. There should be no robbery gangs.

So Yue Xingwen sent a 4-person team to buy food with confidence.

He followed closely and said, "Xiao Nian is looking for a place nearby to build a base, Senior Brother Liu and Senior Brother Xu will help."

Zhang Xiaonian immediately summoned the excavator to work.

The rest of the people discussed the next plan, and Yue Xingwen said: "Sister, a mall popped up here, and I shared it with the research group channel. Let's see what we need to buy."

Research group channel: "Yue Xingwen shared [Mall Link]"

Everyone opened it and saw that it was just like the shopping mall in the online game. There were a variety of products in it, all of which were marked with prices, and they were all related to wind and sand fixation.

For example, excavators of tools are 10000 yuan, asphalt is 100 yuan/barrel, barbed wire is 10 yuan/square meter, wooden piles are 1 yuan/piece... and reeds of plants are 1 yuan/jin, fences are 0.5 yuan/m, sand dates, The saplings of seabuckthorn, salix, and artemisia are all priced within 10 yuan.

Yue Xingwen felt a headache just looking at it, and laymen didn't know what to do.

Lin Manluo was also a little dizzy. She looked through the mall from beginning to end. There were hundreds of plants listed. Although it was cheap to buy, if they bought the wrong ones and they couldn't grow them, then they would be working in vain.

To choose the most suitable one among so many plants, one has to adapt measures to local conditions.

Yue Xingwen turned his head to look at Lin Manluo: "With the little junior from the School of Architecture here, we can save money on machinery. I will give you all the funds for other purchases, and you can decide."

As a layman, Yue Xingwen never pointed fingers at the fields he was not good at.Lin Manluo was the only one in the team who knew this knowledge. After thinking carefully for a moment, she said, "One year, theoretically, we have the chance to try again after failing the first attempt, but I still want to succeed once."

She paused and said seriously: "There are usually three types of engineering for windbreak and sand fixation. The first is physical engineering, which increases the movement resistance of quicksand. Barriers, fences, walls, etc., blocking the quicksand and continuing to move forward, this project is also the easiest to succeed."

Yue Xingwen nodded: "With Xiaonian here, we can use an excavator to dig a circle of ditch as a isolation zone, and then we build walls or fences to block the flow of sand and dust. Is that what you mean?"

Lin Manluo smiled and said, "Yes. But this is only a temporary solution, not the root cause."

Zhuo Feng said: "That's right, physical engineering can only block the sand, and has no effect on the desertification itself. What are the other two things you mentioned?"

Lin Manluo said: "There are also chemical engineering and plant engineering. In terms of chemical engineering, we need to use some chemical materials to build a solid structure layer on the surface to improve the sandification properties, spray chemical reinforcements, or special chemical materials for improving quicksand. Chemicals. For example, asphaltic compounds, which are commonly used in chemical engineering."

Everyone thought that asphalt was used for road construction, but when it appeared in the shopping mall, Yue Xingwen was still a little confused.Now that he heard Lin Manluo's explanation, he understood.Those quicksands float on the surface, and when the wind blows, they can easily spread forward. If they are sealed with asphalt, won't they be unable to blow?

Lin Manluo followed up and said: "The most important thing is plant engineering. Plant a large number of plants that can survive in desertified soil. Since the roots of the plants will penetrate deeply into the soil, this can prevent the continuous spread of quicksand on the surface. At the same time, the plant's Existence can improve the ecological environment on a large scale and slow down the wind speed, which can be said to be a means of 'combining prevention and control'."

Yue Xingwen looked at Lin Manluo's serious face when he talked about professional knowledge, and couldn't help but said: "If we don't bring teammates from the School of Environment in this class, we will be blind. Sister, you will be the director of this project. We listen to you."

Lin Manluo smiled and said, "I'm also a rookie. I only know some theoretical knowledge and have never practiced it."

Zhuo Feng said: "It's better than we don't understand the theory!"

Lin Manluo nodded bluntly: "All right, I'll try."

Jiang Pingce suggested: "365 days is still plenty of time, but we can't do it blindly. I suggest to make a detailed plan, divide it into several stages to complete the task, and consolidate the results step by step."

Lin Manluo looked at Jiang Pingce with a smile: "Ping Ce is right! Since it is an engineering project, there must be a plan. There are indeed several stages for wind and sand fixation, including closing the active sand surface, fixing the surface, setting up sand barriers, Dredge the accumulated quicksand, and finally carry out plant engineering to improve the ecological environment."

She thought about it carefully, then opened the shopping mall list and took a look, and said: "To seal and fix the quicksand, I want to spray asphalt directly and make a protective shell on the surface of the land. This is the easiest and quickest way. After all, the area we want to control The area is quite large, if it is paved with straw or wheat straw, if it is blown away, all previous efforts will be wasted."

A group of laymen nodded in agreement.

They don't know how to fix sand, and they never thought that asphalt can also fix sand.

Lin Manluo looked at the prices of the plants in the shopping mall again: "As for the sand barriers, we use the cheapest fences to build them, let Xiaonian dig a circle of holes, build fences, and reinforce them with wooden piles at intervals to prevent the fences from being damaged. Blown down by the wind. I looked at the price of the fence in the mall, and it doesn't cost much to make a circle."

The key is the plants to be planted. Considering the comprehensive price and growth toughness of Lin Manluo, seabuckthorn was finally selected.

Lin Manluo said: "Seedlings of seabuckthorn are relatively cheap. Moreover, this plant is resistant to drought and sandstorms, and can survive in harsh saline-alkaline land. The fruit is rich in nutrients and can be eaten directly or squeezed for juice."

Yue Xingwen smiled and said: "Then Xiao Ke must like it very much, and I don't know if we can wait until the day when the seabuckthorn bears fruit."

Lin Manluo said: "Should it be possible? All the saplings are sold in the mall. After planting, as long as they can survive, there will be fruit to eat when it comes to bearing fruit."

When everyone heard this, they were full of enthusiasm.

Planting trees, they used to only plant one or two trees symbolically following the activities organized by the school on Arbor Day every year.This time, 12 people will personally participate in the environmental transformation project, which is of great significance.

After a while, the four of Ke Shaobin came back and bought a lot of instant noodles of different flavors, several boxes of milk, and several boxes of pickles, dried meat, dried fruits and other snacks, enough for them to last for 15 days.

Zhang Xiaonian's underground base was also quickly built.

Yue Xingwen greeted everyone: "Next, we will eat and live here. Put things away first. Time is very tight. From now on, we will be the 183 tree planting team. Everyone listens to Sister Lin's command and divides the work. Bar!"