Doomsday Bunker Upgrade Chapter 94: A fish and vegetable symbiosis

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

　　 It cannot be said that it is completely damaged now, but the paralyzed wind turbine obviously cannot be repaired by Li Wensheng himself.

　　 So he can only rely on the generator that was originally used as a backup power source to power his refuge and maintain the operation of his fish and vegetable symbiosis system.

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

　　 "Then you can't hold on for long?" Chen Xin couldn't help but worry a little bit about Li Wensheng's current situation, especially since he just got the oxygen generator from Chen Xin. Although this thing consumes less power, it is necessary Always open.

　　 "Who said no? I have used more than half of the diesel I have stored. If I don't add it, I won't be able to sustain it for up to three months." Li Wensheng couldn't help shook his head, his expression on his face filled with sadness. Helpless: "I have turned off half of the fish-vegetable symbiosis system. The vegetables and fish I harvested have been temporarily processed and stored to reduce consumption. I hope it can last a few more months, or the wind turbine can be repaired.

　　 If I really can’t make it, I can only take my wife and children to the official shelter, and I can’t watch them starve to death! "

　　 Chen Xin heard Li Wensheng say this, feeling a little uncomfortable, and almost said that he could help Li Wensheng repair the wind turbine, but he still resisted it.

There are things you can help with, and there are things it's better not to be so overzealous.

　　 After holding back Chen Xin's help, he still couldn't bear to die, so he said to Li Wensheng: "Old farmer, if you have a surplus, try to exchange supplies with the official refuge. I'm now It just used the vegetables grown in the greenhouse and the official refuge in exchange for materials, and it was barely maintained."

　　 Hearing what Chen Xin said, Li Wensheng's face suddenly showed hope, and he hurriedly asked Chen Xin, "How did you change the writer? Can you help me change some resources? Nothing else is necessary, yes. Diesel will do!"

　　 However, Li Wensheng hasn't finished saying what he said. Seeing Chen Xin staring at him, he knew that he had said the wrong thing.

　　 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 refuge. Planting areas, but fresh vegetables and meat are still relatively scarce. Old farmers should be able to exchange for the gasoline they need."

　　 "Okay, thank you writer! I'll go back first!" Li Wensheng was somewhat embarrassed by what he said earlier, so he left Chen Xin's refuge with the oxygen generator Chen Xin gave him.

　　 and Chen Xin also closed the door of the refuge, carrying a box of fresh fish and walking into the refuge.

　　 Actually, it’s not impossible for Chen Xin to help Li Wensheng change diesel, but his relationship with Li Wensheng is not as close as Mo Qingyan, Ding Ning, and Qin Lan. It’s no problem to give him directions, but Chen Xin has to come forward. To help him change the gasoline, Chen Xin felt that he should not be too enthusiastic.

The story of 　　 Sheng Mien Dou Miqiu has happened too much in history. Although Chen Xin will not be stingy to help others, it does not mean that he will help others unselfishly.

　　 After all, Chen Xin exchanged supplies with the SWAT team. Although it was because the fresh vegetables in his hand were needed by the SWAT team, the main reason for reaching an equal deal was the relationship between him, Ding Ning and Qin Lan. Uncle Ding only gave such a relatively generous exchange in the face of Ding Ning and Qin Lan.

　　 If Li Wensheng really can't live anymore, it may be no problem for Chen Xin to change the diesel for him once or twice, but it is impossible for Chen Xin to help him change the diesel for a long time to maintain the operation of his shelter.

　　This kind of thing can be done once or twice, after all, Chen Xin has no reason to consume his favor to help others.

　　 However, the fish-vegetable symbiosis system mentioned by Li Wensheng gave Chen Xin a lot of inspiration and temptation. He may also be able to develop a similar three-dimensional agricultural system.

Try it next time you upgrade your shelter?

　　 Chen Xin passed this thought in his mind, and couldn't help but start to think about it seriously.

　　While putting the exchanged fresh fish in the freezer, Chen Xin thought about the feasibility of this idea.

　　 Fish and Vegetable Symbiosis System is a cyclic compound farming system that combines fish breeding and hydroponic cultivation. The main principle is to decompose the ammonia nitrogen in fish manure into nitrite through bacteria, which is then Nitrifying bacteria decompose into nitrate, which can be directly absorbed and utilized by plants as nutrients.

　　The water absorbed by plants is relatively clean and can be reused and provided to fish, so as to realize fish farming without changing the water and growing vegetables without fertilizing.

　　 In this way, fish, vegetables, and bacteria can form a complete cycle. Before the catastrophe of sunlight, the entire system can even realize a closed loop by feeding the fish through unfinished dishes. It takes 2-3 cubic meters of water to support a vegetable cultivation area of ​​20-30 square meters~IndoMTL.com~, which can basically meet the consumption needs of vegetables and fish in a family of 3-5 people.

In the current apocalyptic 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 engage in this. Although he had considered making fish and vegetables symbiosis when he was building the refuge, the energy consumption of this set of equipment far exceeds that of soil cultivation. With regard to energy consumption, Chen Xin gave up this idea and only set up an ordinary planting greenhouse.

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

　　 It’s just that energy consumption is indeed an issue that must be considered. After all, Chen Xin can only barely maintain the operation of the shelter. The power supply depends on him changing gasoline from the SWAT team every month to maintain the generator. Operation.

　　Before upgrading the power system, he didn't plan to increase the power burden of the shelter.

　　 So in addition to getting out the medical room 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 top priority for the upgrade, step by step, everything else was upgraded, but the power system remained untouched.

Although the current power system is still enough, 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 can’t come in a hurry, right now...

Chen Xin looked at the fresh fish that had been put in the freezer and couldn't help swallowing. He hadn't eaten fish for a long time.