Doomsday Bunker Upgrade

The planting greenhouse in the Chenxin Refuge is not large, only one hundred square meters, or one are, one-sixth of an acre.

Chen Xin actually made a mistake here. When he was building the greenhouse, the construction team asked him how much area he wanted to build. As a result, he counted ares into mu, so that the area of ​​the greenhouse was six times smaller.

In Chen Xin's original plan, this place was to be used to grow upland rice and vegetables, to provide him with food that would ensure his normal consumption and exchange for resources.

But now because the area is wrong, the output is far from enough.

The yield per mu of upland rice is about 900 catties, and the yield of rice after shelling is about 700 catties, and one are is only equivalent to about one-sixth of an mu of land, and the yield is just over 100 catties.

The total amount of rice that an adult eats in a year is about 300 kilograms. In addition, about the same amount of vegetables and meat must be eaten. In short, if Chen Xin wants to maintain his body In a healthy state, he should eat at least a total of about 500 to 600 catties of food a year.

Considering that the surface temperature will drop to dozens of degrees below zero in the future, enough food is the guarantee of the human body's heat source. I am afraid that the consumption of food will only be more than this, not less.

In the apocalypse, the conditions are limited, and Chen Xin has no hope of meat, but even if it is just vegetables and rice, with Chen Xin's only 100 square meters of planting greenhouse, even if he can plant two crops of upland rice a year, all the harvests will die. The year is only 300 catties of rice, and there is no place to grow vegetables.

Three hundred catties of rice could not meet the food needs of Chen Xin in the next year.

In Chen Xin's original plan, he planned to plant half an acre of upland rice to ensure enough food for himself, and to grow vegetables such as carrots, cabbage and lettuce in the other half of the acre, so that he could have surplus output in addition to his own food. Go to other shelters for resources.

After all, the end of the world has come, there is no sunlight on the surface, and the temperature has dropped to dozens of degrees below zero. The cultivation of crops and vegetables has already relied on these greenhouses.

There is a growing greenhouse to grow some food and vegetables, which is a guarantee for his quality of life and food supply. At least Chen Xin can rely on this growing greenhouse to survive when there is no other source of food.

And in the end times, if Chen Xin can have a stable source of vegetables and fruits, it will be a very reliable source of income in the near future.

At that time, it is a very feasible option to exchange fresh vegetables for other food and materials, and even gasoline needed for power generation.

It's like the dungeon in "The Wandering Earth". The food everyone eats is made of earthworms. You suddenly take out fresh vegetables and fruits, which can definitely be exchanged for a lot of good things.

In Chen Xin's original plan, half of this acre of land was to be planted with upland rice and half with vegetables and fruits, so that it could not only satisfy his own consumption, but also use the surplus to exchange for supplies.

It's just that he calculated one are into one mu of land because of a miscalculation, and the output was suddenly only one-sixth of the original. It was not enough to satisfy his own consumption. How could he have the excess output to exchange for materials?

Chen Xin has carefully calculated that if he wants to meet his food consumption for one year, the area of ​​the entire greenhouse must be at least doubled. Possibly up to four times as big.

Originally, it was unlikely that Chen Xin would be able to expand the planting greenhouse. Although the greenhouse is not a container house, Chen Xin also asked the construction team to make thermal insulation walls and poured cement. If the greenhouse is to be expanded, at least one side of the wall must be knocked out. , and then slowly dig with a shovel.

Although there was nothing to do in the shelter, Chen Xinshao said that it would take a month or two to dig out a 100-square-meter greenhouse.

As for the subsequent wall insulation, let alone, he didn't even have any construction materials.

But now with the system, it's all different.

"Easy Planting Greenhouse"

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

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

Both upgrades are different, but both increase the area of ​​the greenhouse.

The hydroponic planting tray added in the first scheme is placed in the air. If the original 100-square-meter planting greenhouse is turned into two layers, the land on the lower layer will grow upland rice, and the hydroponic planting tray on the upper layer will grow vegetables. The obtained 10% crop yield increase, which is enough to satisfy Chen Xin's own food consumption.

As for the second plan, it is the same as Chen Xin's original plan, destroying one wall to expand the entire planting greenhouse, and upgrading the area from 100 square meters to 200 square meters, which can also meet the needs of Chen Xin's personal consumption. From the first scheme, the space utilization rate is obviously lower.

Moreover, the first solution also adds a drip irrigation system, which is the most water-saving method. This method can achieve 95% of the water resources utilization rate. It was originally used for irrigation in arid areas. For Chen Xin, who is difficult to obtain water resources in the end of the future, this method can undoubtedly save a lot of water resources that would otherwise be consumed.

However, the increase in the lighting efficiency of the supplementary light in the second upgrade plan also made Chen Xin a little concerned.

The fill light is a kind of lamp used to simulate the sunlight. Most of the greenhouses need this kind of equipment to supplement the plant light.

Because many times the light conditions are not ideal, it will affect the growth of plants, especially when planting some precious or delicate plants. The daily light time has different requirements for different growth stages, so it is necessary to use supplementary light. lights to supplement the lighting time.

Chen Xin installed four supplementary lights in the greenhouse, which can completely replace natural light when running for 12 hours a day, which can reduce the lighting time by one hour and save a lot of electricity.

Now that the area is small, this saving effect cannot be seen, but if the planting area is expanded and the number of supplementary lights increases, the energy saving effect will be obvious.

However, at present, Chen Xin is still accumulating survival points at 10 o'clock a day, and he is asked to spend two or three thousand points to upgrade the greenhouse. He obviously does not have the savings to upgrade the room.

Therefore, Chen Xin can only make an upgrade plan based on the upgrade cost and importance of different rooms. As for the real upgrade of these rooms, Chen Xin thinks it will take at least a year.

Of course, if Chen Xin chooses to upgrade certain equipment or items, rather than upgrading the room as a whole, then he will save up for a month or so will be enough to upgrade once.

Just considering the price/performance ratio, Chen Xin still doesn't want to upgrade by only upgrading a single item.