The ecological greenhouses in the scientific research center are not the same as traditional greenhouses, and they are also very different from the ecological greenhouses before the disaster.
In the traditional sense, greenhouses are mainly used to increase the temperature and artificially change the growing environment of crops.
Although the ecological greenhouses before the disaster were different, they were essentially used for this purpose, but their functions were relatively more comprehensive.
Chen Xin remembered that according to the information he found, there was even an ecological greenhouse with its own solar panels, which provided energy for the greenhouse through solar power generation and made full use of natural resources to increase the yield of crops in the greenhouse.
But now these are unlikely.
Including the newly built greenhouses by the country, the most essential difference between these newly built greenhouses after the disaster and the previous greenhouses is still in the walls.
Traditional greenhouses are mostly built with transparent films, which are low-cost and easy to maintain. They use straw thatch or insulation quilts to maintain the temperature. In the past environment, it was indeed sufficient and sufficient for insulation.
However, if you want to be able to maintain the temperature in an environment of dozens of degrees below zero, this is not something that traditional greenhouses can do. Even the ecological greenhouses in the past mostly used plexiglass, transparent plastic, etc. as building materials. The thermal insulation performance of the material is not exceeded too much.
The greenhouse here in the scientific research center has all four walls made of high-performance insulation materials as interlayers. The outer layer is made of low-temperature-resistant metal materials, and the inner layer is made of composite materials. The three-layer structure can not only resist the invasion of severe cold from the outside, but also prevent the internal heat from entering the greenhouse. Temperature and loss of water vapor.
Because there is no sunlight at all outside, the current ecological greenhouse does not consider the issue of light transmittance. Instead, it is necessary to reduce the emission as much as possible for the sake of economy.
In addition to the structural differences, the bigger difference lies in the interior.
Not only does it adopt a variety of technologies such as soilless cultivation, three-dimensional planting, and ecological agricultural breeding, it upgrades the original flat planting area into a three-dimensional planting system. It also allows various crops to form a cycle and form an organic whole.
With the continuous supplementation of the three necessary conditions of light and mild water, although I dare not say that the ecological greenhouse of the current scientific research center can continue farming indefinitely, there will be no problems for at least ten or twenty years.
The expected goal of the research team led by Professor Li is that there will be no circulation problems within 50 years, ensuring that the ecological greenhouse can still operate normally without replacing crops except for mechanical maintenance.
As for the maintenance of ecological greenhouses, it has been fully mechanized with the help of Chen Xin.
Mechanical harvesting, mechanical sowing, mechanical irrigation, mechanical feeding... In the entire ecological agriculture system, all parts that require human labor have been replaced by mechanized operations under Chen Xin's will, and everything has become automated.
In fact, the ecological greenhouses here in the scientific research center are indeed fully automatic. You only need to set up the planting mode and ecological system, provide original crop seeds and animal seedlings, and ensure the supply of light, temperature and water, and the entire ecological greenhouse will be Able to operate on its own.
The fifty years that Professor Li and his colleagues pursue without problems means that except for mechanical failures, the entire ecological greenhouse can operate on its own for fifty years without problems.
To achieve this goal, Professor Li and his team carefully selected all crop seeds.
They did not choose seeds that were artificially cultivated in the past with high yields but could not inherit the traits for a long time. Instead, they chose seeds with stable traits that could be sown continuously without significant loss in yield.
In addition, detailed research on the ecological dependence between crops was conducted, and only then was it possible to build the fully automated ecological greenhouse in the current scientific research center.
The animal seedlings used in the ecological greenhouses are based on the equipment used by Chen Xin to breed genetically modified wolf dogs, optimizing traditional livestock seedlings and cultivating excellent varieties.
It's just that animals are very different from plants. They need special people to take care of them.
Although the automatic machinery of the ecological greenhouse can provide them with the water and food necessary for survival, if diseases and other situations occur, they still have to be handled by humans.
I have to say that this already has the flavor of automated agriculture in science fiction.
The ecological greenhouse that Professor Li and Chen Xin put a lot of effort into did not disappoint them. Not only can it continue to be self-sustaining, but it can also continuously produce fruits and vegetables, as well as a large amount of food crops and eggs every month. Dairy, meat and other agricultural and sideline products.
According to calculations by Chen Xin and Professor Li, such a greenhouse can support at least 3-5 people per acre of land.
Don't think this number is low. If you follow the traditional agricultural model, if you only grow rice on an acre of land, you can produce two crops a year, one thousand kilograms of rice in one season, five to six hundred kilograms of rice, and one thousand kilograms of rice in one year. Barely enough to meet the rice needs of two to three people.
But it is impossible for people to eat only rice and not eat vegetables and other meat.
So in theory, if you want to feed a person and meet his dietary needs, one acre of land using traditional planting methods alone is simply not enough.
But what this kind of ecological greenhouse can provide now is completely different.
First of all, ecological greenhouses that can carry out three-dimensional planting and ecological agricultural breeding can completely turn the original one acre of land into several acres of land, greatly increasing the yield of crops.
Not only that, the ecological system built in the ecological greenhouse can produce a wide variety of vegetables and fruits, as well as eggs, milk and meat obtained from raising poultry and livestock, as well as other agricultural and sideline products.
The presence of rich food types, especially meat, can greatly reduce people's demand for single grains.
So in terms of how many people can be fed by one acre of land, the ecological greenhouse is of course the winner.
However, correspondingly, the maintenance cost of ecological greenhouses has also been increased a lot.
In traditional farming methods, one person can complete all the work on one acre of land.
But in the case of ecological greenhouses, without the fully automatic machinery provided by Chen Xin and relying entirely on manpower for maintenance, even three or five people may not be able to maintain the operation of an ecological greenhouse covering an area of one acre, and these people must also have enough knowledge to allow them to operate. They can cope with various problems.
However, although the investment cost is high, the ecological greenhouse is also a huge good news for the current situation in Yanguo.
Because for the current Yan State, the manpower required to maintain the operation of an ecological greenhouse is secondary, and obtaining more food output is the main thing.
After all, in the apocalypse, manpower is worthless, but food is very valuable.
It is precisely because of this that the top management of Yan State pays special attention to ecological greenhouses, and plans to use this model to build new ecological greenhouses in various places to produce more food.
