Urban Inventor

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Zhang Wei doesn't know anything about the global food situation. Therefore, he can only make up the relevant knowledge first, so that he knows how much food production needs to be increased each year to save China from the food crisis.

He gave a command, and the intelligent assistant Xiaolan displayed the information he wanted to know on the virtual stereo screen.

After careful study for a period of time, Zhang Wei finally had a preliminary understanding of the current situation of food in China and other countries.

The world ’s annual grain production is less than 2.5 billion tons, 1.4 billion Chinese consume 700 million tons (including China ’s production of 600 million tons and imports of 100 million tons), 300 million Americans consume 300 million tons, and Europe ’s 700 million people consume 400 million tons. Tons, the other 4.5 billion people consume 1.1 billion tons.

From these data, it can be seen that many people are starving in the world, and a report published by the Food and Agriculture Organization of the United Nations and the World Food Program also points out that the global hungry population has reached a record 1 billion, more than half of them are children, According to statistics, 18,000 children die every day from hunger and malnutrition, most of which are in Africa. I have to say that this is an unimaginable tragedy, but this is in the 21st century.

Of course, this also has a lot to do with Africans themselves. They ca n’t support too many children, but they like to give birth. In the past, because of the backward medical technology, many children died. Now with the development of medical technology, the average life expectancy in Africa The substantial extension has caused Africa to face a population explosion and 38 countries with the highest fertility rate in the world, 38 of which are in Africa! A new UNICEF study pointed out that at the current rate, there will be 4.2 billion people in Africa by 2100, and almost half of the world ’s children under the age of 18 will come from Africa, which currently accounts for only a quarter.

Africa is facing a population explosion, and China is about to enter the space age, which requires a large number of scientists. It has been decided to fully liberalize the family planning policy. The population will inevitably continue to increase in the future, and the food consumed will naturally increase. Where does the food consumed come from? Is it completely imported?

It should be known that the global food trade volume is 200 million to 300 million tons per year. Even if all these foods are purchased, they can only meet 40% of China's current food demand. And if China really buys so much grain, grain prices will skyrocket, and China must pay a huge price. Moreover, if you rely entirely on imports, it is equivalent to handing over the lifeline of the country to other countries. It is a very dangerous act. As long as other countries take a little bit of our food supply, we will immediately soften, why? Food is unbreakable day and night.

Therefore, food must be self-sufficient, even if it is imported, it must have the courage to face the worst situation: "Even if they don't sell it to us, we can still rely on our own food to survive, at most just eat less meat. "In fact, the country has been doing this for so many years and has been adhering to the red line of 1.8 billion mu of cultivated land.

After understanding the current status of the food problem, Zhang Wei also felt a little shocking. At the same time, he also felt that this problem really needed to be solved. The entire country is about to enter the space age. In the future, a large number of scientists will be needed, and scientists must not be hungry. In addition, if interstellar colonization is to be carried out in the future, a large number of people will inevitably be needed. These populations also need to consume a lot of food. Without enough food, everything is empty talk.

So, how to increase crop yield? How to develop more cultivated land?

Regarding the first question, it is natural to cultivate high-yielding crops. In fact, the space plants that the future technology companies are actively studying belong to this aspect of research. Genetically modified crops are actually a way, but it takes a long time to verify whether it is It will cause harm to the human body, and the resistance of the domestic people is also very high.

Regarding the second question, there are actually two methods. The first is to cultivate crops that can adapt to harsh environments, such as rice that can fully adapt to saline land. The total area of ​​saline-alkali land in China is about 1.5 billion mu. If rice can be grown on the basis of 300 kg per mu, 450 billion kg of grain can be harvested each year, which is equivalent to about 37% of the national grain output in 2013. In fact, our country has made some progress in this regard.

The second method is to transform land that is not suitable for growing crops into land suitable for growing crops.

Experts once had a related idea: "The seawater from the northwest coast of the Bohai Sea reached an altitude of 1200 meters to the southeast of the Inner Mongolia Autonomous Region, and then along the surface of the trough in the east and west of the 42 ° north latitude line, flowing through Yanshan and Yinshan north. Wolf Mountain enters Juyan Sea to the west, bypasses Mamang Mountain's remaining veins and enters Xinjiang. The terrain of Xinjiang is high in the east and low in the west. After the seawater enters Xinjiang, it can form a self-flow. Afterwards, the natural channel of the Shule River "flowing from east to west" is used. , Flowing into Lop Nur on the eastern edge of the Tarim Basin. "

This is the "seawater westward transfer" project, which is envisaged to fill the dry salt lakes, saltwater lakes and closed structural basins in the desert with a large amount of seawater to form ~ man-made seawater rivers and lakes to suppress the desert. At the same time, a large amount of seawater relies on the natural evaporation of abundant solar energy in the northwest, which serves as a water supply source for the wet-humid northern climate to increase rainfall, so as to achieve the purpose of managing deserts and sandstorms in China and completely changing the harsh ecological environment in north and northwest China.

When this idea was first proposed, it aroused widespread debate and doubt in public opinion throughout the country, and it is far from calm. Some people even laughed at the move as a joke similar to "sticking tiles to the Great Wall."

In fact, this idea did have many shortcomings at the time. The main reason was that the cost of the project was too high, and the cost of transporting seawater was too high. In addition, there is a risk of large-scale land salinization when seawater enters the inland.

However, with the success of the small-scale nuclear fusion atomic furnace technology provided by Zhang Wei, that is, controlled nuclear fusion, these problems are not all problems.

As we all know, the raw material for nuclear fusion is helium 3. Every kilogram of helium 3 burned can produce 19 megawatts of energy. 100 tons of nuclear fuel helium-3 can meet the energy needs of the earth for a whole year, and the country is manufacturing Chang'e. The spacecraft No. 7 has a weight of more than 500 tons, that is to say, Chang'e VII can meet the energy needs of the earth for five years by transporting helium 3 to the moon. From these data, it can also be seen that as long as the nuclear fusion power station Popularization will inevitably reduce the cost of electricity to an outrageous level.

With such a low electricity cost, the cost of seawater desalination will also be greatly reduced. After the seawater is desalinated, fresh water can be introduced into North China and Northwest China to control deserts and sandstorms, completely changing the harsh ecological environment in North China and Northwest China. The construction of the entire project can be carried out by intelligent robots. They do not require wages, they only need cheap electrical energy, and they can do 24 hours of hard work. They have strong working ability, which can greatly reduce the cost of the project. As for the cost of transporting water, according to calculations, raising a ton of water to an altitude of 1280 meters (predetermined height) requires a power consumption of 6.4 degrees. This cost was a bit high in the past, but it is not worth mentioning now.

Therefore ~ ​​www.readwn.com ~ "Western Sea Water Diversion" project can now be fully implemented.

Not only that, this project can be increased. Eight deserts are distributed in order from east to west in northern China. They are: Horqin Sandy Land, Hunshandake Sandy Land, Mu Us Desert, Kubuqi Desert, Ulan Buhe Desert, Tengger Desert, Badain Jaran Desert, Taklimakan Desert. In the past, we did not have much way to take these deserts, but now we can completely break the traditional thinking and make full use of the vast Bohai Sea water to transform all these deserts into cultivated land or residential areas, which is equivalent to adding several provinces to the country. With so much land, the country ’s population is more than one billion, and the food is completely self-sufficient, which is a feat that is beneficial to the future.

In addition, China can build a large number of desalination plants, provide cheap fresh water, and completely solve the water shortage problem faced by major cities in China.

I have to say that, with the small nuclear fusion atom furnace technology provided by Zhang Wei, many ideas that seemed difficult to realize in the near future or that many people seem to be delusional, can now be implemented. This is the power of technology. This is the change brought by Zhang Wei.

In this regard, Zhang Wei expressed his calmness. These projects are only a small case compared to the planetary transformation he plans to implement in the future. (To be continued.)