After that, he poured the remaining half bottle of Coke into the leather water bladder he carried with him, and threw the plastic bottle to Xu Da, "This can be given to you, smell it." ”

Xu Da was dumbfounded, Wang, don't deceive people too much!

Seeing that his father and sister were about to fight if they disagreed, for the sake of family harmony, Xu Yue hurriedly asked:

"There are still many energy fruits, what do you want to exchange?"

"Of course, it's impossible to have an airplane cannon or something, so you don't have to think about it."

Xu Yue's words successfully interrupted the four people who were about to fight, and the family of five glanced at each other, each thinking about the materials they needed now.

Of course, what Xu Yue wants most is all kinds of high-yield plant seeds, but now that she has cotton and hybrid rice, she has basic food and clothing, and the rest of the seeds don't seem to be so impatient.

In addition, it costs too much energy fruit to exchange this kind of seed, and Xu Yue is reluctant to do so for the time being.

So, let's see what her family thinks.

Xu Erniang said: "I see that the water magic arrays of various factories are a little insufficient now, and they can only build factories close to the water source, which is a bit limited." ”

"We now have a large territory, and the materials we need to produce have become more, and water sources are not so easy to find."

"If I have to change something, try to see if I can change some alchemy materials, I want to remake some power machines and use them in places where there is no water source for production."

Xu Yue hadn't exchanged various materials beyond his knowledge before, and he didn't know if the technology tree could be exchanged for alchemy materials.

Nodding, I asked my sister to write down the materials, and decided to give it a try first, not sure if it would succeed for the time being.

Wang Pingping thought about it, and also took out a pen and paper to make a list, "Soon we are going to leave Yuyang County and continue to send troops to the north, the climatic conditions and geographical environment over there are different from here, the further north you go, the colder the climate, and now the shortage is still marching supplies." ”

"Such as portable tents, sleeping bags, moisture-proof mats, tin foil, first-aid medicines, military backpacks, portable tools, etc., these are hard to do at our current production level, but they cannot be mass-produced and applied, which is a waste of time and financial resources."

"Also, we will definitely go south in the future, after leaving the flat and open road, our army will have to face a completely different combat environment, anti-mosquito medicine spray and the like, you can also exchange some in advance."

Speaking of this, he was afraid that Xu Yue's energy fruit would not be enough, so he reminded again:

"Tents and medicines are the top priority, and everything else can find alternatives, so let's focus on these two first."

Portable folding tents need to use bracket steel, and Wang Dayou and other masters on the arsenal can't make it at all, let alone the rainproof cloth used for the tent.

Such a cloth cannot be achieved at all now, because there is no waterproof coating.

If you use local tarpaulin, it is estimated that it will be scrapped after less than two uses, which is purely a money-burning behavior.

Xu Yue took the two lists listed by Ah Niang and Ah Sister, settled in place, and entered the research room.

The tech tree is still the same size as before, and it hasn't grown slowly with time.

However, due to the increasing number of energy fruits on the tree, it has now turned into a red tech tree.

Xu Yue is experienced now, so she won't make a wish directly, but first ask the technology tree what it can be exchanged for, and what is the approximate price.

The technology tree flashed green light and expressed its dissatisfaction for a moment, so he honestly used the 'flash code' that only Xu Yue could understand, and discussed it with Xu Yue.

Alchemy materials can be exchanged, but they are very expensive.

But machine power is the cornerstone of development, and the steam engine can't be exchanged, so it can only be made with alchemy products first.

Even if it is expensive, Xu Yue has to change it.

Two hundred energy fruits, in exchange for twenty alchemy materials, if Xu Erniang did not have a scrap rate, he could make twenty power machines.

There were still three hundred and fifty energy fruits left on the technology tree, and Xu Yue exchanged two hundred for one thousand military-grade tents containing sleeping bags and moisture-proof mats, and exchanged one hundred for basic medicines to fill the already empty medicine cabinet in the research room.

All of a sudden, there were only fifty energy fruits left, and while Xu Yue's flesh hurt, his fighting spirit was also ignited.

As long as she thought that a thousand people could be exchanged for an energy fruit, she was excited, and she couldn't wait to expand her territory.

Suppose there are 100,000 people in a county, then as long as she wins a county, she can have 100 energy fruits.

Ten counties is a thousand, a hundred counties is ten thousand, and a thousand counties are a hundred thousand!

......

In the blink of an eye, March has arrived.

There is not much rain in Yuyang County this year, and the farmers who are waiting for spring plowing have a trace of sadness and fear in their eyes.

It's the fear of drought.

"It's the end of March, and although the rice has been planted, there is still very little rainfall, and if there is no rain, this year's harvest will definitely be affected."

Zhou Rong from the College of Agriculture took the precipitation report for February and March from all over the country, stood in front of Xu Yue, and said worriedly:

"Yuyang and Pinggu counties are okay, they are located at the confluence of rivers, and the harvest can be preserved by carrying water for irrigation, but the rivers in the remaining counties are too small, and if they are irrigated with river water, I am afraid it is still not enough."

"Of course, if there is a heavy rainstorm next, then these worries are unnecessary." Zhou Rong sighed.

Spring ploughing is a top priority, Xu Yue's family of five all arrived, and after listening to Zhou Rong's report, they all frowned.

"Has the news of the villagers digging ponds to store water have all been conveyed in place?" Xu Yue asked.

Zhou Rong nodded, "It has been notified, the villagers are now digging the pond, the old farmers have seen the severity of the drought, they have taken the lead, and the villagers are very active in digging the reservoir." ”

Xu Dachai asked: "I started digging the aqueduct last year, if I can dig it this year, will I be able to cope with the autumn harvest?" ”

Zhou Rong looked at her companion Fubao beside her, she was doing the specific data calculations, and she had to answer this question.

The girl looked serious, flipped through the notepad in her hand, and only after a moment did she reply:

"If you calculate the water consumption of one acre of rice field for the whole whole cycle, the water storage in the natural reservoir located outside Pinggu City cannot support the autumn harvest at all."

"But if the water storage is increased by 15 times, then even if there is very little precipitation this year, our county can rely on reservoir water to complete the irrigation task."

Fifteen times?

Zhao Bei and Sima Yi glanced at each other and shook their heads in unison, this is an impossible task.

The water flow is easy to dredge, but it is difficult to store it, the entire storage reservoir in Daqing is all built on the basis of the natural reservoir to build a dam and store it, because the technical materials are limited, the water storage is not deep.

In a real drought year, such a reservoir can only be useful.

On the Xu family's side, although they have already started to build a dam, it looks like it, but it is obviously not needed this year.

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