Du Yuhan listened to Uncle Liang's words and asked with some doubts: "Don't you have a water pump? It should be no problem to use a diesel engine to drive the water pump." ”

Liang Shouzheng said: "There are no water pumps and diesel engines. There is not even a tractor in Laohewan Village, and the water pump is not even in our village. Besides, there's nowhere to get that much diesel. ”

He Zhendong said: "Yes, oil is all war readiness materials, and it is difficult to get them. Tractors are even harder to get. ”

Du Yuhan thought for a while and said: "Since the machinery can't be used, then use manpower." With a rickshaw waterwheel. ”

Several people looked at each other after listening to Du Yuhan's words.

Liang Shouzheng said: "Xiaohan, I have also heard that there are water wheels in some places. You're saying that the waterwheel works, is it human?"

Du Yuhan nodded and said, "Just a few people can fully operate." If a few waterwheels are erected by the river and the canals are dug, not to mention all the fields in our village will be irrigated, but most of them should be fine. ”

Liang Shouzheng couldn't help but sit up straight and said, "Xiaohan, if you can solve the problem of irrigating fields for our village, you will be the hero of our Laohewan Village." Our whole village, young and old, thank you. ”

Du Yuhan smiled: "Uncle Liang, don't lift me so high. I just had an idea. Maybe. You don't need the whole village to thank me, just build me a house in the village when the time comes. I will pay for the house myself, you just need to give me a piece of land and find someone to build it for me. ”

He Zhendong asked suspiciously: "Xiaohan, what are you building a house in Laohewan Village?"

Du Yuhan said: "I like it very much, and in the future, after I graduate from the medical college, I will go to the village to build a health center." You can treat the people in the village, and the surrounding villages can also benefit. ”

Liang Shouzheng became more energetic when he heard this, and he said excitedly: "Xiaohan, are you really going to come to the countryside to be a rural doctor, and not stay in the city?"

Du Yuhan nodded and said, "Actually, I don't like the city at all. The countryside is relatively peaceful and free. I don't want to go to work in a hospital like that. I want to be freer and more laid-back. ”

Liang Shouzheng said happily: "That's no problem, I'll build you a house in charge." Xiaohan, what kind of waterwheel are you talking about, do you know how to do it?"

Du Yuhan nodded and said, "I'll go back and draw the drawings, and then let my father do it." You'll have to find a few people to help him, because this watermill isn't small. Also, you'd better organize people to dig a few water storage canals, so that it will be easier to water the ground when the time comes.

The geographical environment of Laohewan Village is very good, if you plan well, engage in breeding and planting, it can develop into a very wealthy village. Not to mention eating, even eating meat is no problem. ”

Liang Shouzheng was itchy when he heard Du Yuhan's words, and he couldn't wait to let Du Yuhan draw the drawings of the waterwheel immediately. Let's see if we can irrigate the fields.

Liang Shouzheng said: "Xiaohan, when do you think you can draw the drawings?"

Du Yuhan looked at Uncle Liang's eager eyes and smiled: "You are really anxious." Do you have a quiet room here? I need to think about it alone, don't let people disturb me, and I'll try to draw the drawings for you today. And you'll have to prepare me with a pen and paper, and a ruler, preferably with a scale. ”

Liang Shouzheng has people who go to school at home, and there are things like paper and pen.

He kicked his youngest daughter and youngest son out of the room, and asked Du Yuhan to draw drawings in the room where they had just done their homework.

Du Yuhan needed a separate room, and then took out the information from the space to query.

Du Yuhan actually had this idea for a long time, and she had already checked the information about the waterwheel, and she had already designed the waterwheel, so at this time, it was good to take out the drawings that had been drawn and copy a copy.

Because of the backwardness of the productive forces, the level of mechanization in agriculture in the country is quite low, and to improve this situation, it is necessary to start with agricultural machinery.

Du Yuhan began to learn mechanical knowledge as early as when he had this awareness.

In her previous life, she also took several degrees. Although I have not studied mechanical design professionally, I still know some knowledge in this area.

She has also learned some knowledge of mechanical drawing, at least she can read drawings.

In this life, she also went to the bookstore to buy a few books on this subject. It's just that there are very few books on this in the bookstore, and there are very few books on mechanics in her space, so she can only learn the basics first.

Now she can at least draw some simple mechanical drawings. The drawings of the waterwheel are not very difficult, she can draw them completely.

Two hours later, Du Yuhan left the room with a new copy of the drawings.

Liang Shouzheng saw Du Yuhan come out with a piece of paper, and immediately stood up and took the drawing handed over by Du Yuhan.

He Zhendong and Du Lianqiao also came over to take a look.

Du Lianqiao has carpentry skills and will also read the drawings, he saw the drawings of the waterwheel at a glance, Du Yuhan painted very clearly, the dimensions are clear. It's a bit complicated to make, but as long as you do a good job of the axle and bracket, the rest is easy to do.

Liang Shouzheng handed the drawings to Du Lianqiao and asked, "How is it?" Brother Du, can you do it?"

Du Lianqiao nodded and said, "It can be done, although it is more difficult, but it can also be done." ”

Du Yuhan said: "Make a few more such water wheels, set them up by the river, and dig a canal to lead directly to the fields. The water goes straight to the fields. This water wheel can be controlled by two people, and there is no need to waste so much manpower. The saved manpower can be used to weed and do other tasks in the field.

If the canal doesn't have so much time to dig, dig it shallower first, which can play a role in drainage. However, for the sake of the future, it is still necessary to repair water conservancy diligently and improve the water conservancy facilities on farmland little by little. As long as the river does not dry up, we are not afraid of drought and can have water to irrigate the farmland.

Our village should also dig some sewers, and if the rain is heavy, we can use these canals to drain the water. It's not something that can be done overnight, you can take it slowly. Now it's time to dig the ditch first. ”

Liang Shouzheng said: "I barely know how to dig this ditch, why don't you give us guidance?"

Du Yuhan said: "It's still so cold, the ground is freezing hard, and it will take a while to dig the canal. I'll take a closer look at it after the New Year. Now you can make the waterwheel first. ”

Liang Shouzheng said: "You are right, tomorrow I will convene a meeting of village cadres to talk about the construction of the water wheel." When the time comes, let your father be in charge of doing it, and I'll find a few quick hands and feet to help him. When the time comes, give them centimeters. ”

This chatted and chatted before I knew it, and it was almost dark.

He Zhendong saw that he had to leave, otherwise it would be dark. It's not easy to walk, so it's better to get home before dark.

Everyone also knew about this, so they hurriedly loaded their car with some souvenirs, and sent He Zhendong and his sisters to the car together.