Doomsday Bunker Upgrade

　　 With the assistance of Mo Qingyan and Qin Lan, Chen Xin’s six hundred catties of vegetables this month was quickly harvested from the ground, and placed in the box Qin Lan had brought to the car they had driven.

　　 "Then let's go first, Axin, take care of yourself." At the door of Chen Xin's refuge, Qin Lan looked at Chen Xin and said something to him, but found it difficult to speak.

　　 "Well, Alan, you are the same. Now this kind of environment is no better than before. Your job itself is dangerous enough. Now you must pay more attention to safety." Chen Xin saw that Qin Lan cared about herself, so he was very careful and told her.

Qin Lan nodded, preparing to leave without saying anything, but when she walked out of the refuge gate, she looked back and frowned and said, "Axin, the gate of the refuge should be reinforced, and you should be outside. Do some disguise. As you said, the environment is no longer what it used to be, you... be more safe."

　　 "I see, I will deal with it later." Chen Xin nodded. Qin Lan said that he was already considering the problem, but it was not listed as the top priority.

　　 Seeing that Chen Xin had listened to her own words, Qin Lan also nodded, then got into the car and started the car to leave.

　　 "Ingredients, when the carrots are harvested next month, remember to leave some for me, I'll exchange Lafite for you!" When she left, Mo Qingyan still kept her head out of the car window and placed an order with Chen Xin.

　　 "Got it!" Chen Xin responded, watching them walk away, then turned back to the shelter, and closed the door again.

　　 Chen Xin, who had returned to the interior of the refuge, could hardly contain his excitement, and ran directly into the planting greenhouse, preparing to upgrade the greenhouse.

　　"Simple Planting Greenhouse"

　　 "Upgrade plan 1: Add drip irrigation system, increase hydroponic planting tray, crop yield +10%, irrigation water consumption -10%, upgrade required survival point 2000"

　　 "Upgrade plan 2: Increase planting area, improve lighting efficiency of supplementary light, crop yield +10%, lighting time -10%, upgrade required survival points 3500"

　　 "Do you provide steel, cement, fill light, micro vacuum pump, PVC pipe, PVC hydroponic planting tray and other materials for upgrading?"

　　 "The materials for the first plan have been provided, the survival points required to upgrade are reduced by 90%, and the survival points required are 200 points"

　　 "The materials for the second plan have been provided, the survival points required for the upgrade are reduced by 90%, and the required survival points are 350 points"

　　 "Plan 1 and Plan 2 upgrade materials are met at the same time, the survival point required for the upgrade is reduced by 150 points, and the required survival point is 400 points. Do you choose to upgrade?"

　　 Facing the text written by the system, Chen Xin undoubtedly chose to upgrade, which also used up all the 400 survival points he currently had.

　　 With Chen Xin's choice to upgrade, the entire planting greenhouse has also been shrouded in the upgraded light that Chen Xin has seen twice.

　　 And this time, it is not only the greenhouse, but the various materials that Chen Xin placed in the storage room and garage are also covered by light, and become points of light converging in the greenhouse.

When the light from the upgrade in the greenhouse dissipated, what appeared to Chen Xin was that the area was doubled, and a layer of hydroponic planting trays hanging from the ceiling appeared to be much more advanced than before. .

　　 The increase in planting area and the emergence of hydroponic planting plates are very intuitive changes, while the greenhouse becomes more advanced but it is a more subjective feeling.

　　 After all, when there is no improvement in the level of science and technology, to distinguish whether a thing is advanced or backward, to a large extent depends on the subjective judgment of people.

But looking at it after the upgrade, it’s clean and tidy. The fill light that has been upgraded from a big lamp to a tube is soft and bright, and the fields are regular and tidy. Even the crooked carrots that Chen Xin planted before are reorganized into a straight line of planting greenhouses. Chen Xin did feel a kind of advanced "fan".

　　 The greenhouse in front of him no longer looks like the ordinary refuge greenhouse that Chen Xin had made before, but more like a plant cultivation laboratory.

　　 But even so, the role of this greenhouse is still to grow crops and get food.

　　 So no matter how good it looks, for Chen Xin, the usefulness of the upgraded greenhouse is the most critical.

　　 Originally, the ground of Chen Xin’s greenhouse was directly soil. The land used to divide the land was the ridge left by Chen Xin himself. There was no plan.

　　 But now with the planting area of ​​200 square meters, the land is evenly divided into eight rectangular pieces of land, which seems to be much more regular.

　　 Standing between the fields and ridges, Chen Xin reached out and grabbed a handful of soil from the ground, rubbed it with his hands, and wanted to check the quality of the soil.

　　 It seems that even the soil was affected during the upgrade, and these soils seemed to have also been upgraded.

　　 The soil in the Chenxin greenhouse was originally obtained from a nearby farmer’s vegetable garden. It is mellow soil itself, and it has been carefully taken care of and is suitable for planting crops.

　　 But compared with the soil in the current planting greenhouse, the previous soil is obviously grayer in color, and the contrast is quite obvious.

　　 Now the soil in the greenhouse is dark and shiny, and the soil is fine and fluffy. It even feels like a squeeze of oil when you pinch it with your hands, which makes people feel fertile.

　　 Although Chen Xin didn't know much about soil, he could probably guess that this should be the most fertile black soil in the north of Yan Country.

　　 This is much better than the soil he used before. This natural treasure given to mankind by nature is very suitable for planting crops. The entire Blue Star even has only three black lands.

　　 The changes in the soil gave Chen Xin a deeper understanding of the power of the system upgrade. He did not think that upgrading the greenhouse would also upgrade the soil together, or upgrade it to the black soil that is most suitable for crop growth.

　　 In addition to the changes in soil quality, the most obvious change in the planting greenhouse is of course the hydroponic planting trays hanging from the ceiling.

There is a set of hydroponic planting equipment in the materials that Chen Xin exchanged before, including hydroponic planting trays, nutrient solution circulation pipes and micro vacuum pumps, but these exchanged equipment is obviously not comparable to the same type provided after the system upgrade equipment.

　　 Although the hydroponic planting plate is called a plate, it is not actually a plate, but consists of two parts: a nutrient solution tank and a planting plate.

　　 The hydroponic planting tray exchanged by Chen Xin is a very common plastic tray, and the planting plate is a grid-like board. It looks ordinary, but it feels rough to the touch.

But after the system upgrade, the tray has become an integrated sink, and the planting plate has become a more professional planting plate with each slot, especially the color has been changed to white by the system, and the touch feels smooth. Round, so it looks exceptionally clean and tidy.

　　There are also pipes for circulating nutrient solution and fill light to provide light for the lower plants on the bracket, so that the light of the lower crops will not be affected by the cover of the hydroponic planting plate.

　　 Chen Xin stretched out his hand to hold the bracket hanging from the ceiling, tried to shake it, but found that the bracket was quite stable, and there was no shaking. It seems that the quality of the things after the system upgrade is quite good.

　　 After checking the upgraded planting greenhouse, Chen Xin also began to prepare for the use of the hydroponic planting system. Although hydroponic planting is hydroponic, it is not really just water.

　　 Although it is said that only water crops can grow, they will not grow well, and the harvest is naturally even more sorry.

　　 Therefore, under normal conditions for hydroponic planting, it is necessary to add a formulated nutrient solution to the water to provide various trace elements required for crop growth.

　　Chen Xin naturally knows this, so when he asked Mo Qingyan to help him exchange supplies, in addition to a set of equipment needed for hydroponic planting, he also bought a large bottle of concentrated nutrient solution.

　　 This kind of nutrient solution is a general-purpose nutrient solution for plant cultivation, and it is a highly concentrated model. According to the instructions on the package, only 30 ml can be mixed with four liters of nutrient solution.

　　 The capacity of this bottle of highly concentrated nutrient solution is 1.8 liters. Based on the area of ​​Chen Xin’s current planting greenhouse, this bottle will be enough for him to use for several years.

　　 After checking everything, I was very satisfied with the planting greenhouse after the system upgrade. Chen Xin prepared the nutrient solution and started to prepare for breeding.

　　 Hydroponic planting is different from soil planting. Soil planting can directly sow the seeds into the soil, and the crops will sprout and take root.

　　 But for hydroponic planting, even if there is a planting plate, it needs to be bred beforehand. After the roots and leaves have grown, they can be planted on the nutrient solution tank.

Fortunately, the new plants are cabbage and lettuce. The breeding of these two crops is not complicated. You only need to remove the planting plate, put seeds on the sponge used to fix the plants in each slot, and then water and mix. A good nutrient solution keeps the sponge moist, and you can wait for the seeds to germinate.

　　 When removing the planting plate from the bracket, Chen Xin also noticed that there were still some problems with the installation height of the hydroponic planting plate.

　　Chen Xin’s planting greenhouse has a ceiling of 2.5 meters high. Although it feels a little short, there is no problem when Chen Xin used it before.

　　 But after the upgrade, a hydroponic planting plate was added. The height of the hydroponic planting plate was about 1.5 meters above the ground, which caused Chen Xin to be unable to straighten his waist when handling the lower crops on the ground.

Although it is said that you have to bend your waist for farming, it will still make people feel uncomfortable if you can’t straighten your waist. After all, even when the farmer is plowing the land, he will occasionally straighten up and rest instead of being bent waist.

　　 But fortunately, Chen Xin's greenhouse is not big, and the land to be planted is nothing more than 200 square meters, which is not too tiring.

　　 After realizing this problem, Chen Xin still thought of the small agricultural machinery he had prepared before.

The materials exchanged with Uncle Ding this time did not include small agricultural machinery. It was not that Chen Xin did not mention it, but that Uncle Ding did not send the small agricultural machinery he wanted, but said that he would wait for the next Chen Xin. After Xin has paid off the balance of the transaction, he will deliver what he wants.

　　 Obviously, Uncle Ding is still wary of Chen Xin.

　　 This has nothing to do with trust or not. Even before the disaster, ask a bank loan or a friend what kind of collateral to borrow money. Chen Xin's transaction method of installment payment makes the other party a little uneasy, so it is normal to keep one hand.

　　 Chen Xin didn't have any dissatisfaction or opinion about this, but because of this, his work this month will inevitably be a little harder.

　　 Fortunately, when the system was upgraded, the soil on the ground was also upgraded, but he did not need to fertilize and plow the ground, just sow the seeds of upland rice.

　　——————————————————

　　I'm busy with planting the greenhouse, and it's night time.

　　 Although it is said that there is no change in light, the night can no longer be called night, but the work and rest time is still the same after all.

　　 After dinner, Chen Xin collapsed on the sofa in the living room, playing the game console a little boringly.

After a whole day of work, Chen Xin felt that his muscles were sore. Although he had done a lot of farm work this month, he still felt extremely tired today, so he wanted to play two games. relax for a moment.

Speaking of it, it’s normal to feel tired today~www.ltnovel.com~ After all, I moved all kinds of materials in the morning, and in the afternoon it was water cultivation and dry rice planting. Compared with the previous month, the workload did increase. A lot.

　　 Fortunately, there is no need to cultivate the land today, otherwise Chen Xin feels that he will be tired and break his waist.

　　While rubbing the handle, Chen Xin took a sip from the cup on the side. The faint boiled water in his mouth made him slap his lips. If only he could have a bottle of Fat House Happy Water.

　　 It's a pity that there is no such thing as Fat House Happy Water in the refuge, which is a holy thing to relieve fatigue, and some only have pure and tasteless water.

Before the disaster, Chen Xin mainly collected survival supplies. Although it was not impossible to collect materials such as Fei Zhai Happy Water, Chen Xin didn't even think about it at that time, so that it will only be used when it is no longer available. To remember that I was not prepared at all.

　　 As for the disaster, it may be possible to obtain Happy Water from the Fertilizer House through material exchange, but I don’t know if there is any stock in the large refuge.

　　 After all, this thing is a consumable. After the disaster strikes, I am afraid that even if the country organizes to resume production, it will not waste resources to produce these non-survival materials, but will use all the resources to produce survival materials.

　　 Thinking of this, Chen Xin couldn't help but sigh. Not only is the Fat House Happy Water, but also many things he is familiar with will probably disappear with this disaster and become a record in the history book.

　　 I don’t know whether human beings can produce these things again after they resume production and rebuild their homes. How many things from the past can be restored again?

　　 Chen Xin doesn't know the answer, but he sincerely hopes that if possible, he can regain his old life, even if only part of it.