Doomsday Bunker Upgrade

　　 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 his fish and vegetable symbiosis system.

　　 And this obviously has 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 about Li Wensheng's current situation, especially since he just got the oxygen generator from Chen Xin. Although this thing doesn't consume that much power, it needs to be kept on. of.

"Who said no? I have used more than half of the diesel I have stored. If I don't add it, I can't hold it for three months at most." Li Wensheng couldn't help but shook his head, his expression full of sadness and helplessness: " I have now turned off half of the fish and vegetable symbiosis system, and the harvested vegetables and fish have been temporarily processed and stored to reduce consumption. I hope that 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 some things that can help, and some things are better not to be so enthusiastic.

After holding back help, Chen Xin still couldn’t bear to die, so he said to Li Wensheng, “If you have surplus output, old peasants, try to exchange supplies with the official refuge. I use planting now. The vegetables produced in the greenhouse were exchanged for materials in the official refuge, and they were 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 change some resources for me? Nothing else is needed, just have diesel! "

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

Chen Xin did not say much to Li Wensheng, but only reminded him: "There should be a shortage of vegetables and fresh meat in the official refuge. Although they raise mice and grow mushrooms, the city government also has an underground planting area on the power plant. But fresh vegetables and meat are still relatively scarce. Old farmers should be able to change to the gasoline they need."

　　 "Okay, thank you writer! I'm going back first!" Li Wensheng was somewhat embarrassed by what he said just now, so he carried the oxygen generator Chen Xin gave him and left Chen Xin's refuge.

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

Actually, it’s not impossible for Chen Xin to help Li Wensheng change the diesel. It’s just that 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 must come forward to help him change. Gasoline, Chen Xin feels that he still cannot be too enthusiastic.

　　 There have been too many stories like Sheng Mien fighting Miqiu in history. Although Chen Xin will not be stingy to help others, it does not mean that he will help others selflessly.

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, but the main reason for reaching an equal deal was the relationship between him and Ding Ning and Qin Lan. Let Uncle Ding see. It was only in the face of Ding Ning and Qin Lan that such a relatively generous exchange was given.

　　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 might also be able to develop a similar three-dimensional agricultural system.

　　 Try it next time you upgrade the 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 into the freezer, Chen Xin thought about the feasibility of this idea.

The fish-vegetable symbiosis system is a cyclic compound farming system that combines the two technologies of fish breeding and hydroponic cultivation. The main principle is to decompose the ammonia nitrogen in fish manure into nitrite through bacteria, which is then decomposed by nitrifying bacteria. As nitrate, nitrate 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 disaster of sunlight, the whole system can even realize a closed loop by feeding the fish with unfinished vegetables, only 2- The vegetable cultivation area of ​​20-30 square meters with 3 cubic water bodies ~www.ltnovel.com~ can basically meet the consumption needs of vegetables and fish products in 3-5 households.

　　 In the current apocalyptic environment, if you want to maintain the operation of such a system, you still need supplementary lights to replace sunlight, and you must expand the planting area 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 built the refuge, the energy consumption of this set of equipment far exceeds that of soil cultivation, and energy consumption is considered. , Chen Xin gave up this idea and just 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 a problem that must be considered. After all, Chen Xin can 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 did not intend 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 highest priority for upgrading, the upgrade step by step, and other things have been upgraded, but the power system has not moved.

　　 Although the current power system is still sufficient, Chen Xin decided to upgrade it. At least he should build up biogas fuel cells to reduce the load on the generator.

　　 Of course, these things are not urgent, 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.