Obviously, Li Wensheng originally planned to use wind turbines to supply electricity, so that his shelter has enough power to use, but it is clear that the harsh environment has greatly shortened the service life of the three wind turbines.

It can't be said that it is completely damaged now, but the paralyzed wind turbine is obviously not something that Li Wensheng can repair alone.

So he had to rely on a generator that was supposed to be a backup power source to power his shelter and keep his aquaponics system running.

And this has obviously exceeded the consumption limit that Li Wensheng can maintain, making him fall into the dilemma of energy shortage.

"Won't you last long?" Chen Xin couldn't help but be a little worried about Li Wensheng's current situation, especially since he had just gotten an oxygen concentrator from Chen Xin, although the power consumption of this thing was not so big, it needed to be turned on all the time.

"Who's to say it isn't? I've used up more than half of the diesel fuel I've stored, and if I don't replenish it, I won't be able to survive for three months at most. Li Wensheng couldn't help but shake his head, the expression on his face was full of sadness and helplessness: "I have now turned off half of the aquaponics system, and the harvested vegetables and fish have been temporarily processed and stored to reduce consumption, hoping to last a few more months, or be able to repair the wind turbine."

If I really can't hold on, I can only move to the official shelter with my wife and children, and I can't watch them starve to death! ”

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

There are some things that can help, and some things that are better not to be overzealous.

After thinking about it for a while, Chen Xin, who couldn't help it, still couldn't bear to see death and not save it, so he said to Li Wensheng: "Old farmer, if you have a surplus output, try to exchange materials with the official shelter, I am now using the vegetables produced by the planting greenhouse and the official shelter to exchange materials, and I can barely sustain myself." ”

Hearing Chen Xin say this, Li Wensheng's face suddenly showed a light of hope, and he hurriedly asked Chen Xin: "How did you change the writer?" Can you help me change some resources? You don't need anything else, just have diesel! ”

However, Li Wensheng's words were not finished, and when he looked at Chen Xin's eyes staring at him, he knew that he had said the wrong thing.

Chen Xin didn't say anything to Li Wensheng, but reminded him: "There should be a shortage of vegetables and fresh meat in the official shelter, although they grow their own mushrooms, and the city government also has an underground planting area on the side of the power plant, but fresh vegetables and meat are still relatively scarce, and the old farmers should be able to exchange for the gasoline they need." ”

"Okay, thank you, writer! I'll go back first! Li Wensheng was a little embarrassed by what he had just said, so he left Chen Xin's shelter with the oxygen concentrator Chen Xin gave him.

And Chen Xin also closed the door of the shelter and walked towards the inside of the shelter with a box of fresh fish.

In fact, it is not impossible for Chen Xin to help Li Wensheng change diesel, but the relationship between him and Li Wensheng is not as familiar as Mo Qingyan, Ding Ning and Qin Lan, and there is no problem in giving him direction, but if Chen Xin wants to come forward to help him change gasoline, Chen Xin feels that he still can't be too enthusiastic.

There are too many stories like Shengmi Endou Mi Qiu in history, although Chen Xin will not be stingy in helping others, but it does not mean that he will selflessly help others.

In the final analysis, Chen Xin exchanged materials with the SWAT team, although the fresh vegetables in his hands were what the SWAT team needed, but the main reason for reaching an equal deal was the relationship between him and Ding Ning and Qin Lan, so that Uncle Ding gave such a relatively generous exchange for the sake of Ding Ning and Qin Lan's face.

If Li Wensheng's life is really unbearable, Chen Xin may have no problem helping him change the diesel fuel once or twice, but it is impossible for Chen Xin to help him change the diesel fuel for a long time to maintain the operation of his shelter.

This kind of thing can be repeated over and over again, after all, Chen Xin has no reason to consume his favor to help others.

However, the aquaponics system mentioned by Li Wensheng gave Chen Xin a lot of inspiration and temptation, and he may be able to build a similar three-dimensional agricultural system.

Give it a try next time you upgrade your Vault?

Chen Xin had this thought in his mind, and he couldn't help but start thinking about it seriously.

While putting the exchanged fresh fish into the freezer to freeze, Chen Xin pondered the feasibility of this idea.

Aquaponics system is a cyclic composite farming system that combines two technologies of fish farming and hydroponic planting, and its main principle is to decompose ammonia nitrogen in fish manure into nitrite through bacteria, which is then decomposed into nitrate by nitrifying bacteria, which can be directly absorbed and utilized by plants as nutrients.

After being absorbed by plants, the water is relatively clean and can be reused and provided to fish, so that fish can be raised without changing water and vegetables without fertilizing.

In this way, fish, vegetables, bacteria, the three can constitute a complete cycle, before the disaster of solar light, the whole system can even be fed by the way of eating endless vegetables to achieve closed-circuit circulation, only 2-3 cubic meters of water supporting 20-30 square meters of vegetable cultivation area, can basically meet the consumption needs of 3-5 people family vegetables and fish products.

In today's post-apocalyptic environment, to maintain such a system, fill lights are needed instead of sunlight, and acreage must be expanded to provide staple food production.

Chen Xin's current planting greenhouse does not have the conditions to do this, although he also considered making fish and vegetables symbiosis when he built the shelter, but the energy consumption of this equipment is far more than that of soil cultivation, considering the problem of energy consumption, Chen Xin still gave up this idea and only made an ordinary planting greenhouse.

But now that the system exists, Chen Xin feels that he can still consider upgrading his planting greenhouse to a aquaponics system.

However, the issue of 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 electricity supply depends on him changing gasoline from the SWAT team every month to keep the generator running.

He didn't plan to increase the power burden on the Vault until he had upgraded the power system.

So in addition to getting the medical room out in the next step, Chen Xin's primary upgrade target is the power system.

Although it was determined from the beginning that the power system was the highest priority for the upgrade, step by step, everything else was upgraded, but the power system remained unchanged.

Although the power system is still sufficient, Chen Xin decided that it would be better to upgrade it, at least to build a biogas fuel cell to reduce the load on the generator.

Of course, these things are not in a hurry, right now......

Chen Xin looked at the fresh fish that had been put in the freezer, and couldn't help but swallow his saliva, he hadn't eaten fish for a long time.