Obviously, Li Wensheng originally intended to use wind turbines to power his refuge, so that all sufficient power can be used, but it is obvious that the harsh environment has greatly shortened the service life of the three wind turbines.

Now it can't be said that it is completely damaged, but the paralyzed wind turbine obviously can't be repaired by Li Wensheng himself.

So he had to rely on the generator as a backup power supply to power his shelter and maintain the operation of his fish and vegetable symbiosis system.

This is obviously beyond the upper limit of Li Wensheng's consumption, which makes him in a dilemma of energy shortage.

"Then you won't last long?" Chen Xin can't help but worry about the current situation of Li Wensheng, especially when he just got the oxygen generator from Chen Xin. Although it doesn't consume so much power, it needs to be on all the time.

"Who said no? I've used more than half of the diesel I've stored. If I don't replenish it, I won't be able to sustain it for three months at most. " Li Wensheng couldn't help shaking his head, his face full of sadness and helplessness: "I have now turned off half of the fish vegetable symbiosis system, and the harvested vegetables and fish have been temporarily processed and stored to reduce consumption. I hope I can last a few more months, or I can repair the wind turbine.

If I can't survive, I can only take my wife and children to the official shelter. I can't watch them starve to death! "

When Chen Xin heard Li Wensheng say this, he felt a little uncomfortable. He almost said that he could help Li Wensheng repair the wind turbine, but he still held back.

Some things can help, and some things are better not to be so enthusiastic.

Chen Xin, who resisted the help, thought about it for a while, but he still couldn't bear to see the dying. So he said to Li Wensheng, "old farmer, if you have surplus output, try to exchange materials with the official shelter. Now I just exchange materials with the vegetables produced in the greenhouse and the official shelter, and I can barely keep on."

Hearing Chen Xin say so, Li Wensheng's face suddenly showed the light of hope, and quickly asked Chen Xin, "how did you change the writer? Can you change some resources for me? I don't need anything else, just diesel! "

However, Li Wensheng's words have not been finished. Looking at Chen Xin and staring at him, he knows that he has said something wrong.

Chen Xin didn't say much to Li Wensheng, but just reminded him: "there should be a shortage of vegetables and fresh meat in the official shelters. Although they grow mushrooms by themselves and the city government has an underground planting area in the power plant, fresh vegetables and meat are still relatively scarce. Old farmers should be able to get the gasoline they need."

"Well, thank you! I'll go back first Li Wensheng left Chen Xin's refuge with his oxygen generator because he was embarrassed by what he said just now.

Chen Xin also closed the door of the shelter, carrying a box of fresh fish to the inside of the shelter.

In fact, it's not impossible for Chen Xin to help Li Wensheng change diesel oil. It's just that he and Li Wensheng are not as familiar as Mo Qingyan, Ding Ning and Qin LAN. It's OK to give him directions, but Chen Xin should come forward to help him change gasoline. Chen Xin thinks that he can't be too enthusiastic.

There are too many stories about Sheng mien fighting Mi Qiu in history. Although Chen Xin is not mean to help others, it does not mean that he will help others selflessly.

In the final analysis, although Chen Xin exchanged materials with the SWAT team because the fresh vegetables on his hand were needed by the SWAT team, the main reason for reaching an equal deal was his relationship with Ding Ning and Qin LAN. Uncle Ding gave such a relatively generous exchange in the face of Ding Ning and Qin LAN.

If Li Wensheng really can't live any longer, Chen Xin may be able to help him change the diesel once or twice, but it's impossible for Chen Xin to help him change the diesel for a long time to maintain the operation of his refuge.

After all, Chen Xin has no reason to expend his human feelings to help others.

However, the fish vegetable symbiosis system mentioned by Li Wensheng gives Chen Xin great inspiration and temptation. Maybe he can build a similar three-dimensional agricultural system.

Try it the next time you upgrade the sanctuary?

Chen Xin's mind flashed this idea, can not help but began to seriously consider.

While freezing the fish in the freezer, Chen Xin is thinking about the feasibility of this idea.

Fish vegetable symbiosis system is a kind of circular compound farming system which combines fish culture and hydroponic cultivation. Its main principle is that ammonia nitrogen in fish manure is decomposed into nitrite by bacteria, and then decomposed into nitrate by nitrifying bacteria. Nitrate can be directly absorbed and utilized by plants as nutrition.

After being absorbed by plants, the water is relatively clean and can be reused to provide fish, so as to realize fish culture without changing water and vegetable cultivation without fertilization.

In this way, fish, vegetables and bacteria can form a complete cycle. Before the disaster of sunlight, the whole system can even feed fish with endless vegetables to achieve a closed-circuit cycle. Only 2-3 cubic meters of water and 20-30 square meters of vegetable cultivation area can basically meet the consumption needs of 3-5 people's families.In the present eschatological environment, to maintain the operation of such a system, supplementary lights are needed to replace sunlight, and the planting area must be expanded to provide staple food output.

Chen Xin's current planting greenhouse does not have the conditions to do this. Although he once considered the symbiosis of fish and vegetables when building the shelter, the energy consumption of this set of equipment is far more than that of soil cultivation. Considering the energy consumption, Chen Xin gave up this idea and only built an ordinary planting greenhouse.

But now that there is a system, Chen Xin thinks he can consider upgrading his greenhouse to a fish vegetable symbiotic system.

However, energy consumption is indeed a problem that must be considered. After all, Chen Xin can only barely maintain the operation of the shelter at present, and the power supply depends on him changing gasoline from the special police force every month to maintain the operation of the generator.

He doesn't plan to increase the power burden of the shelter until he improves the power system.

So the next step is not only to get the medical room out, but also to upgrade the power system.

Although the power system was determined to be the top priority for upgrading from the beginning, but step by step, other things have been upgraded, but the power system has not been moved.

Although the power system is still sufficient, Chen Xin decided to upgrade it. At least we should build up biogas fuel cells and reduce the load of generators.

Of course, these things are not urgent. Right now

Chen Xin looks at the fresh fish that has been put in the freezer and swallows his saliva. He hasn't eaten fish for a long time.

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