Now is the era of technology in the world, and the whole hall has a special feeling for the Academy of Sciences.

This is still the past, if the Academy of Sciences comes up with more helpful facilities for agriculture, then the prestige of the Academy of Sciences among the people will be completely heavenly.

At this time, an old man who is about to retire goes to argue with the Academy of Sciences?

Just because people didn't listen to their own arrangements, they went to the scene every day to stare at it?

Basically, there is no need to doubt it, the world must be scolding himself, Chen Shuda is not stupid, anyway, as long as he can solve the problem, anyway, there are a bunch of freaks in the Academy of Sciences, and there is no normal person.

Although Xu Hai is gone, Chen Shuda is still beautiful.

Stepping on this newly repaired cement pavement, I couldn't help but exude a sense of pride in my heart.

Thinking back then, who would have dared to imagine that there would be such a road?

Think about the future, the road is running, there are trucks full of goods, fast speed, large capacity, and more importantly, when transporting materials, there is no longer one in ten as before, a car only needs two people, even if it is more, it is more than enough to match four people.

Although the consumption of four people is also a lot, the advantage is that the speed is fast, walking on such a road, according to the data obtained in the test site, it only takes three days to run from Chang'an to Luozhou.

This is still only in the case of traveling during the day, and if you drive day and night, it will theoretically only take a day and a half to get there.

But in fact, it is impossible, it is only the theoretical speed, without considering all other factors, and in practice, you need to consider the weather conditions, brightness, road conditions, etc., but even so, four days, or two days and two nights, is enough to run the whole course.

It takes a little more than a day for a train to finish, so the truck is not much slower than the train.

But in any case, for places where there is no railway, the cement road is the most important transportation facility, which can make up for the vacancy left by the railway and connect the entire Datang more closely.

Railways and cement roads, like fishing nets, are closely connected together, pulling every piece of land in Datang in.

Chen Shuda was a little depressed, he felt as if he couldn't wait for that day, because this is not something that can be done in three or five years, and he is also old and has some physical problems, which makes Chen Shuda feel very unconfident.

……

The problem of the push-pull rod is actually a matter of hydraulic rods, and with hydraulic rods, all problems are solved.

Li Yuanji knew the cause of the problem, but he did not have the ability to solve the problem.

And the hydraulic rod is a more advanced thing, so Li Yuanji basically has no hope for this.

And it also involves the problem of circuits, and now I haven't even figured out the electricity, where can I do the circuit thing?

Therefore, Li Yuanji looked at it very openly, and the toss was a toss, but it was just a toss.

Li Yuanji is most interested in agricultural equipment.

First, this thing is of great significance, once it is fully put into use, it will have a great impact on the population and labor force, and at the same time, it can liberate a large number of labor force to do other things.

Although it is still based on agriculture, we can't put all our hearts on agriculture, and the biggest advantage of mechanized farming is to liberate as many working people as possible under the premise of ensuring that the output is not reduced.

With people, you can do other things, and with people, you can do more other things.

This is a very simple truth, everyone knows that there is great power in numbers.

Second, this thing is relatively simple and easy to do.

Finally, it is to prepare for the tank, Li Yuanji does not know if it can succeed, but the tractor does have a lot of similarities with the tank, especially their production line, during the New China period, most tractor factories can build tanks, and even now, they still retain the tank production line, although it is outdated.

It's just an experience.

At this moment, Li Yuanji is sitting on a tractor, the tractor's physique is a little big, at least bigger than his impression, but the power is not weak at all.

There is a bucket of coal on the left hand side, as for the coal filling, there is no special requirement, through the hole above to see the situation of the combustion chamber, feel that the fire is weaker, or the power is reduced, just add some coal.

The front of the tractor is a concave, about the thickness of an arm, with a small stick on it, and there is a red circle at the top, when the tractor is stationary, when the circle is not visible in the line of sight, it means that it is time to add water, and it is easy to add water, just unscrew the lid and add it.

The only thing that makes Li Yuanji a little depressed is the matter of pushing and pulling rods, and now the pushing and pulling rods are a little easier than before, but they are not much easier.

The only good point is that it does not need to be in place at one time, after modifications, some pulleys are added to distribute the weight, and at the same time the buckle is added, push the push lever forward, pull the chain forward or a few times, the buckle is automatically locked, continue to push, and then go another section of the stuck.

This can prevent the pear knife in the back from falling, and if you put it down, you can step on the pedal, pull the buckle and squeeze the spring, make room for the pear knife in the back, and let the pear knife in the back directly contact with the ground.

But this is far from enough, so a pusher is installed on the right hand side, and through a device, on the way to move, it is gradually pressed down, basically walking three or four meters to the end.

One person can do it, but it's a lot of work.

Even so, Li Yuanji was satisfied with this after going up to manipulate it.

From scratch to mechanized production, although it is still a little cumbersome, but so what?

No matter how bulky it is, it is more efficient than the previous production method, and no matter how bulky it is, it is now the most advanced equipment.

"Wouldn't it be better to change to a front and rear double pear knife?" Li Yuanji's old mistake was made again, and he couldn't help but propose.

In the previous life, this single-headed pear knife has basically disappeared completely, and there are double pear knives before and after, but there are not many, more of them are upper and lower double pear knives, or upper and lower three pear knives, but now there is no technology, and the double pear knife is very good.

Xu Hai frowned and thought for a while, and suddenly seemed to have opened his mind, and said suspiciously: "If you arrange a few more cutter heads, let them be arranged in the order of front and back, the same as the width of the steam body, theoretically speaking, you can plow so wide at one time, and the efficiency may be improved a little more." Xiao Xu, go and draw out the drawings, and make one according to this to try ......"

"Eh, Your Majesty, what's that ......" Xu Hai was a little embarrassed, when he thought of this question, or when Li Yuanji made a suggestion, Xu Hai forgot about Li Yuanji, and his mind was full of things about the floor ploughing machine.