When the middle warehouse opened, Li Ke was still disappointed. The two warehouses in the middle were for rice and hybrid rice.
Hybrid rice with strong yields is very powerful under the modern industrial system, but it is useless in this era because these hybrid rice are really just reserve grains.
In other words, unlike wheat, which can be planted as seeds, it can only be used for eating.
This is the real strategic reserve.
Li Ke quickly walked towards the remaining two warehouses. Aren't there two more warehouses? After opening the remaining two warehouses, Li Ke breathed a sigh of relief. He could save the optimized rice.
Well, with these two things, it means that Datang's grain production will definitely enter an explosive stage next year.
This has nothing to do with fertilizers. Although land fertilizers are very important, chemical fertilizers are also very important, but in fact the improvement of crop seeds themselves is also very important. Just the increase in yield of the crops itself, Li Ke does not require much. Doubling the current level should be very important. Simple right?
Many people underestimate crop improvement and always think that the biggest role in modern food production comes from chemical fertilizers, but in fact this is not the case.
Before Li Ke traveled through time, in the 1980s, one kilogram of chemical fertilizer could increase crop yield by 1:20. However, after entering the 21st century, the yield increase ratio per kilogram of chemical fertilizer was only 1:5. Why does the yield increase rate of chemical fertilizers decrease so much?
This is naturally due to the improvement of grain varieties and changes in the nature of the land. When production increased so much in the 1980s, only 40 kilograms of chemical fertilizers were applied per hectare. But after the 21st century, this number reached 400 kilograms, an expansion of ten times.
But from this point of view, we know that the impact of chemical fertilizers on increasing production is far less than that of improving grain varieties, and more chemical fertilizers are not always better.
Excessive fertilization can cause complete degradation of the land and may even turn it into dead soil.
Therefore, chemical fertilizers are never decisive. Even without chemical fertilizers, Li Ke thinks that the yield of modern improved varieties after planting in Datang should be 70% of modern ones.
At least, if you insist on worrying about fertility, then the land in the Tang Dynasty was a thousand years less cultivated than in modern times!
Coupled with the increasing popularity of curved shaft plows and columbines this year, when these iron tools begin to become popular, it means that the efficiency and depth of farming will be greatly improved, and the production of food will also increase.
Therefore, Datang's grain production will definitely experience explosive growth next year. When grain production increases, the people's incidental industries will increase, such as using grain to make various drinks, snacks, and raising poultry and livestock, etc. A complete industrial chain will be formed.
After all, alcohol is not just for drinking.
It can also be said that from now on, Datang has finally got rid of the food crisis.
At least with the current population and the current grain crops and farming machinery, it is impossible for the Tang Dynasty to be short of food.
After reading this, Li Ke did not forget the underground. The underground should continue to extend, but he didn't know what would be stored underneath.
After entering the underground warehouse skillfully, the previously stretching passage finally extended again. This time, not long after Li Ke walked forward, he found that there was a downward step in the passage in front. When Li Ke walked down this step, He was stunned.
Below is a wider space. This... seems to be higher than the original warehouse above. This... is actually an air-raid shelter? Li Ke quickly saw the problem here from the markings on the wall.
This is a civil air defense facility. In addition to the corridor in the middle, large rooms are also isolated on both sides, and these rooms are stocked with various simple daily necessities.
Li Ke quickly found reserve warehouses in these civil air defense facilities, but after seeing these reserve warehouses, Li Ke smiled bitterly. This thing was indeed a national strategic reserve, but for him, it was of no use now.
One warehouse contains a large number of gas masks, while the other warehouse stocks simply three-proof suits.
The quantity of these reserves is not particularly large, but the largest reserves are strategic food.
The shelf life is twenty years. In fact, you can basically eat reserve cans and compressed biscuits even after thirty years. This is the real strategic food. More than half of the cans in these warehouses are like these, but Li Ke also found some new cans and only half of them.
The shelf life of this small half of the reserved cans is 5 years. It is obvious that they have just been reserved.
As for those with a shelf life of twenty years, Li Ke probably looked at them and found that the production date was probably more than ten years later than when he traveled through time.
It is estimated that in the future, it will gradually be replaced by cans with a shelf life of 5 years.
Preservatives must have been added to the twenty-year shelf life. For these strategic reserve grains, there is no need to say that preservatives are unhealthy. This thing will not consider that at all.
There are complete living facilities in the entire air-raid shelter, such as a drinking water system, which should be a drinking water system that directly extracts groundwater. However, there is no power or it is quiet here. Li Ke doesn't know how these things operate.
Speaking of which, Li Ke was quite interested in seeing this defensive measure, because he had never seen this thing before.
Those air-raid shelters that are open to the public are different. Those air-raid shelters are not at the same level as these air-raid shelters. Civilian air-raid shelters only have short-term self-sustainability. They are designed to prevent bombings and other situations, and do not allow long-term survival.
But this air-raid shelter, combined with the strategic reserve warehouse on the ground, should be similar to a long-term self-sustaining underground base.
There are still a lot of things that have not been unlocked, but to be honest, Li Ke feels that these unlocked things are of little use to him, mainly because the current Tang Dynasty... really doesn't lack anything.
And those things that are missing cannot be made up directly by providing supplies. They all take time to proceed slowly.
So Li Ke came in to take a look at this air-raid shelter. When he got a fresh look, he just didn't find the weapons arsenal he wanted most. Logically speaking, he shouldn't. Of course, there is another possibility that there are some weapons that are not necessary to reserve. There are indeed armed police forces stationed around the warehouse.
Under special circumstances, after the armed police force withdraws, weapons will naturally be available. Large weapons cannot be stored in underground warehouses, but small weapons are not necessary, so it can be said to be justified.
But for the wheat and rice, he had to take the time to find an outside warehouse and put them out for people to arrange for planting.
There is no way to plant it this year. It should be no problem next year. However, rice is completely fine in some places in the south where there are three crops and two crops.
