Three rivers, namely the Heilongjiang River, the Ussuri River, and the Songhua River.

The Sanjiang Plain, which is surrounded by these three water systems, is home to the most fertile black soil in China, with a very high organic matter content, which is perfect for farming.

In view of the long freezing period here and the large temperature difference between morning and evening, Sun Xiangfu also needs to lead the children of the farmers to develop crop varieties suitable for local planting.

Of course, the difficulty of its improvement is not great, the late planting of rice in Shannan Road, it adapts to a certain temperature difference, after arriving in Yanjin, Sun Xiangfu quickly planted a rice test field out, to the end of June, from the perspective of the heading situation, the yield should not be low, as long as you pay a little attention to its cold storage characteristics, the impact on the yield of rice seeds is good.

After all, most of the time, the area with a large temperature difference between morning and evening can play a positive role in crop yield, because it can more effectively combine photosynthesis with the plant's own repair, such as Shanyang's melons and fruits, wheat, which is higher than the yield of Guanzhong, and more sweet, this is not only because of the fertility of the land, the altitude and climate reasons, is the key, to the place of origin of Xinjiang, the temperature difference between morning and evening is greater, and the planted will be higher yield and sweeter.

Therefore, for thousands of years, it is generally believed that farmers do not need cultural knowledge, which is the biggest mistake, and it is difficult for people without knowledge to grow good fields, and there is a huge difference between an agricultural expert and an ordinary farmer's yield and crops, because most of the experts who do research and understand its various characteristics, farmers, do not understand anything.

After Sun Xiangfu participated in the work in later generations, he often encountered that the fruit trees planted by farmers did not bear fruit, or the fruits that produced were sour and difficult to swallow, so he could only secretly take cyclamate for takeaway, and the corn was planted without sticks, and the cobs that were produced were very serious in terms of lack of rice, and the same farming, the same crops, and the yield was quite different.

They don't know the reason at all, usually after the loss, they seek advice from a high-achieving agricultural student like Sun Xiangfu, and after getting a scientific explanation and correction, they know that any crop, if you want to grow it well, it is not so simple, you have to rely on knowledge.

Therefore, there are often some college students who return to their hometowns to farm, with high yields and high incomes, and how much money they have earned, because these college students have learned knowledge and are sure that some crops will be good, so they will choose to go back to farming.

After getting the comprehensive technical guidance of Sun Xiangfu and a cadre of agricultural students, the spring ploughing around Yanjin City has grown very well, and the people are happy and more willing to listen to classes and study, and even the recruitment task that Su Dingfang and they can't complete is also easily completed after Sun Xiangfu's speech.

There is a people's foundation, and the efficiency of doing things is really high, when they see the things that Chang'an has transported, the kind of rumbling roar, and they can always absorb water from the river and spit it out, everyone almost worships Sun Xiangfu as a god, which is too subversive of their cognition.

"It's not bad, it's much higher than I imagined, and after adding a turbo pressurized water design to the bottom, you can raise the water to a higher drop height, but ten is still too little, doesn't it mean that the model machine was successfully tested in mid-April? Why is it only three months to produce this point? Sun Xiangfu asked Liu Shili, the commander of the forbidden army who sent the pumping machine.

Liu Shili replied, "There are already a lot, all research academicians, have their own research tasks, the design of these pumps, only by the original research and development group of several academicians research and transformation, last month was finalized, began to put into production, do you think it is convenient to use?" ”

When he was in Weinan, he was responsible for leading the forbidden army to protect the safety of all research academicians, and now, each of them was seen by Li Chengqian as a treasure, of course, the task of sending the pumping machine was only on the surface.

As Liu Shili stayed in the institute for a long time, he also knew that some of these research and development projects were targeted, and the pumps with low technical content were required to be easy to use because they were civilian.

"It's already very good, but there's still room for improvement, and when you go back, tell them that this fuel port can be made bigger, so that more charcoal can be piled up underneath and burned, so that no one has to watch the fire all the time.

In addition, the entire chassis is covered with a large iron shell that is connected as a whole, so as not to get dust and mud into it, affect the service life, and also prevent its operating principle from being leaked.

These few units, I will let my subordinates make a few wooden shells and package them, and then you ask them to make some iron shells, and bring them over next time, wooden shells, long-term use, there is a danger of fire. When Sun Xiangfu said this, he pointed to the stove that was burning firewood, and Liu Shili understood.

After a brief trial, Liu Shili found an occasion where no one was there and said to Sun Xiangfu, "The research group has started the research project of 'electricity', Academician Ma asked me to come over and run in person, just to ask you if you have any suggestions on this thing, you don't need to tell me, after it is written, it will be sealed with fire paint, and I will take it back and give it to them." ”

Sun Xiangfu heard this and nodded, although he was not a science student, and he had forgotten most of the science knowledge he learned in school in later generations, but he still needed to know its main principles and some basic knowledge of common sense.

For example, tungsten wire can be used as a light bulb, and copper wire must be insulated with rubber skin, so everyone knows the knowledge, as long as he mentions it slightly, he doesn't know how much work can be saved by the research group.

Liu Shili said this, Sun Xiangfu really remembered a lot of knowledge in these aspects, before Sun Xiangfu was compiling Jiuyuan County School, junior high school physics textbooks, but did not write it in.

Because, at that time, there was no basis for electricity, and it would be too shocking for you to write out the principles and applications of electricity, and at that time he just wrote down a lot of physical laws and some operation formulas that he remembered, and handed them over to the students to study and verify, and now, they are also applied to practical research.

Three days later, Liu Shili set off back to Weinan with all the forward-looking cognitions that Sun Xiangfu still remembered in his mind about electricity, as well as the application of steam engines in cars, ships, textiles, and so on.

And Sun Xiangfu also began to follow Su Dingfang's organized reclamation team, to the Sanjiang Plain, now in mid-July, before the arrival of the freeze period in the past two months, they strive to complete the wasteland, and villages, some planning tasks of the city, as for the construction, basically have to start construction after the snow melts next year.

"Ah, what about Langhehe~······

The Ussuri River comes, long and long~

The blue river water has waves~

The people of the Tata are scattered, and a thousand nets ~

The boats are full of rivers and the warehouses are full of fish

······”

What lyrics Yu Xiu'er sings, not everyone understands, but everyone who hears her singing, or the people of the Murowei and other tribes, have a crispy, sweet, and transparent feeling in their hearts, and their inexplicable mood is much better, and it is much easier to work.

In the past few days, they have seen the power of the Han people, the kind of 100 meters long, the bottom of the big fishing net with a row of big stones, only need to choose a wide water area in the lake area with a boat to put down, by two groups of people pull the two ends of the big rope to the shore, those in the lake do not know how many years to grow big fish, they are pulled to the shore in piles, the people only need to put the prepared big frame on the shore, pick a big one to pick up the frame.

In just one day, with dozens of such large nets, each of them pulled a few times, and enough fish was caught for many days to eat, and then, the people of the Murwei and the people of Murowei, who did not have much surplus food at home, could work with them with peace of mind.

The demarcated areas were set on fire to the wastelands, dams were built, and pumping machines were erected, and the places that were originally full of reeds and pheasant nests were turned into fertile fields after being pulled by the ploughs of the oxen and ploughs, and it is said that everyone could not eat all the grain that was grown every year after lying at home for a winter.

Moreover, a large part of them are not in the wasteland, are planning places according to the terrain, some are opening caves, burning bricks and tiles, and some are zoning village homesteads, it is said that next year, this place will become a village in five miles, a set in ten miles, and a county in a hundred miles.

All the houses, will be built with thick bricks, thick and sturdy birch trees as beams, even if the snow in winter is big, it can not be pressed, everyone can also burn the warm kang and warm pot in the house, even the cattle and sheep, also live in such a warm house, everyone will spend the winter in the future, no longer have to go to the cave to hide.

The most important thing is that they don't need to pay anything at all to get these houses, fields or anything, they just need to follow those Han people who teach farming and learn how to farm, even if they haven't seen the output of the fields now, or what those warm and comfortable houses are like, but they also feel that this is a hundred times better than when they surrendered to Goguryeo before.

Because, since they surrendered to the Tang Dynasty, they have never paid taxes, and they often receive some finely made clothes, or spirits that can ward off the cold and a certain amount of food, which will basically not let them freeze to death during the winter.

Someone is sick, and there are medical officers in white clothes who give them pills, which are not bitter at all, and after a few days of eating, most of the symptoms will be cured, as long as no one dies in the tribe in winter, there will be more newborns soon, and the trend of population growth will also be very fast.

In the past eight or nine years, they have thoroughly known what the Heavenly Empire is, what is the bearing of the strongest empire in the world, and what a wise decision it was for their leader to choose to surrender to the Tang Dynasty.

When it gets dark, the bonfire is lit, the fragrant food can be eaten openly, and there is the kind of liquor that will warm the whole body after a sip, everyone can drink a bowl every day, and then everyone can sing and dance around the bonfire, those Han musical instruments, can make the most beautiful sound in the world to accompany everyone, and there is no happier life than this.

The exchange of emotions is like this, the army of the Tang Dynasty had fought together with the soldiers of the Murowei, Jianya, Xia, Khitan and other departments, so they established a friendship.

Now, the people of these tribes, together with the people of the Tang Dynasty and the officials, have fished, opened up wasteland, planted land, built villages and cities, so they have also established friendship.

Just a few days of living together made them develop a certain friendship with each other, and with the subsequent entry of more tools and materials, as well as a longer period of time to work, live, sing and dance together, the estrangement between various tribes and nationalities will become less and less, laying a solid foundation for settling together for a long time in the future. ()

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