"Have you counted it? In order to transport grain ships from Yang'an Pass to Dianjiang, it is necessary to set up several market towns along the way, arrange for people to farm at ordinary times, and pull fiber when they are busy. How are they being built now? ”

Li Su looked at the map in front of Lu Su that had been smeared and revised several times, and asked.

Lu Su pointed to the picture: "In the past two months, Gongyou and I (Guoyuan) have personally run up and down the Jialing River. Jiameng County is slightly better, and the boat can return with light loads, but I also planned the Tuntian point, and there will be nowhere to resettle the displaced people in the future, so I will consider it again.

To the south of Langzhong and the north of Nanchong, the turbulent place of Jiangwan is the third point, Anhan and Dianjiang, which are also needed, to go to Bajun County to govern Jiangzhou, more than 800 miles of waterway, there are a total of five places to be transported on the beach, which is not easy.

This year, Han Sui was defeated by Huangfu Song, did not do much to harm Yongliang, only organized to Yongliang two thousand households, nearly 10,000 people, each Tuntian point three or four hundred households, one thousand Zhengding, the first year to plant radish, potato (yam) is the main, but the river valley is deep and narrow, often the mountain walls on both sides are steep, the flat land is too little, it is difficult to find enough high-yield fertile land for the Tun people to cultivate. Even if the mountain field is opened, it is the lowest yield. ”

Li Su listened patiently and added: "I can't understand it when I look at the map here, since I have leisure, the lord asked me to ask about the Tuntian affairs together, and take a walk in person—the situation is similar everywhere, right?" Is it enough to pick a recent inspection? ”

Lu Su: "Enough, enough, the situation is almost the same, one can be solved, and the rest can also be promoted according to the gourd painting." ”

Li Suyi waved his hand: "Let's take a look, by the way, this draft of "Qi Min's Technique", you can also take a look, about why you want to tuntian, how to manage, how to cooperate with the military transportation strategy, how to repair the terraces, there are detailed descriptions on it. Those that involve technology are not allowed to be passed on. ”

Li Su is not really completely idle at home these days, and Cai Yan can't be idle, so this book is also freshly baked.

Lu Su and Guoyuan looked at it for a while, and they felt quite rewarded.

Especially Guo Yuan, who has never been mentioned in the romance, but in "Three Kingdoms", he is a famous Tuntian official under Cao Cao, so he is very sensitive to many of the views put forward by Li Su.

Of course, in the official history, there are many famous ministers under Cao Cao who have risen because of their management skills in Tuntian, from Zaozhi to Ren Jun, who are more famous than Guoyuan. But Zaoyi's credit is mainly for making decisions, while Guoyuan is good at implementation-

History records that this person is very good at formulating a performance appraisal system, rewards and punishments for the people and managing officials. It can be understood as a "KPI setter of the human resources department at the level of Zhou Peel", who always "invites people in batches" to incite the residents to compete with each other.

Guo Yuan carefully calculated according to Li Su's diagram: "This ...... Is the method of terraces layered and leveled the mountains? This project is huge, and I think that the people who plant twenty or thirty acres of mature fields may not be able to reclaim one acre of mountain fields.

Even if it is opened, it will be cultivated all year round in the future, and the efficiency will be more troublesome than that of flat land. It is estimated that the cultivation limit of the people on the plain is 100 acres of land, and it is good that these terraced fields can be planted with 60 acres, and it is not convenient for cattle to use. ”

Li Su smiled slightly: "I didn't know until I got to the place, but your estimate is not accurate." ”

Guoyuan's qualifications are too shallow, and he doesn't question it much for a while.

However, Lu Su read the book and was not interested in the details, but he had a lot of ideas about the title of the book: "Why did my brother name this book "Qi Min Yaoshu"? This book is not only about the method of farming and increasing production, but also has a lot of it for the tuntian officials, and even for all those who govern civil affairs. ”

Li Su thought about it, it seems to make sense, he was just too lazy to come up with a name, and when the Northern and Southern Dynasties would appear "Qi Min Yaoshu", he directly borrowed the name, in fact, the content is completely irrelevant, many things in "Qi Min Yaoshu" He didn't have it, many of the things in his book "Qi Min Yaoshu" didn't, and some directly copied the "Four People's Moon Order" and slightly compiled and modified it.

However, when Xu Guangqi wrote the agricultural book in the later Ming Dynasty, he named it "The Complete Book of Agricultural Administration", because he collected the long agricultural books of the past dynasties, and it not only involved how to farm the land, but also involved how to deal with relevant civil affairs, and there was a lot of content for those who were officials.

From this point of view, it is indeed more appropriate for Li Su's book to be called "The Essentials of Agricultural Administration", and it is not qualified to call the whole book, he is not complete at all, but only picks out some key points.

"Zijing is right, anyway, this book is still a draft, and if you want to add content, you should change the name to "Agricultural Politics Technique"."

The name is correct and the name is reasonable, and it is also very important to set a name before doing things.

After a little preparation, the group asked for leave from home, and then went westward on the horse, went out of Yangpingguan and Benma Mingge Road, and arrived at the first Jialing River Valley Tuntian point set up by Lusu in a day or two.

……

Although Li Su doesn't know how to farm, he has accepted geography classes in compulsory education for so many years, and he still has common sense.

The place they arrived at in the valley seemed to be a deserted place of uninhabited mountains and mountains. But Li Su estimated according to the map, this place should be roughly equivalent to Guangyuan City in later generations.

In May, Lu Su, as the magistrate of Hanzhong County, organized Yongliang homeless immigrants here, and built some houses in a few months, but they were still mainly thatched houses, and there were rammed earth mud walls, and there were almost no brick houses.

The people have reclaimed as much of the narrow plots along the river valley as possible, and some have already planted a season of beans to enrich the land, because the government does not levy taxes, relying on these beans and turnips, they can barely survive a winter and spring famine.

Beans are actually very good for nitrogen fixation in fertile land, the disadvantage is that the yield is too low, and the most American soybeans in later generations are 200 kilograms per acre, not to mention the soybeans in the late Han Dynasty, which is less than two stones per acre, which is about 70 kilograms in later generations.

It's a pity that the flat land by the river is too narrow, and the usable river valley flat land that Li Su saw is only thirty or fifty zhang wide, according to the rough farming style of the Han Dynasty, one Ding Han mu is one hundred acres, and thirty acres in later generations, and a Zhengding can plant half a mile long riverbank, counting both banks, and the surrounding dozens of miles of land can only support a few hundred tun people.

In addition, Lusu will settle 1,000 Zhengding at each point every year, including 2,000 or 3,000 women and children, and it will be expanded in the future, so it is necessary to reclaim all the adjacent hillsides into fields and expand the area of fields by more than five times. Only particularly steep peaks can be reserved for fruit groves and tea groves.

Li Su walked up and down, chose a section of the river where the water turned sharply and slowly, and then pointed to the hillsides on both sides: "I think this place is good." Let's pilot the development of barren terraces here——

In the future, you will learn from me when you choose a sloping land, and you should be in a place where the river flows from turbulent to slow. Because the place where the river is turbulent will inevitably carry sediment and silt, it is easy to deposit it in a gentle place, so that the people can dig up silt and build fields to level the land along the gentle place of the water flow.

Now is a good season to open up the terraced fields, it is already the end of October, the autumn is the most dry time, the trees have no water, you can set fire to the wasteland, after removing some trees, the slope mud is leveled as much as possible, and if it is not flat enough, dig the riverside silt to fill it. ”

Lu Su didn't understand anything, they just learned and sold now, so they ordered to cut down a circle of trees first, drag them to the middle of the area to be burned, and form a separation zone with the side, and then start to set fire to the dead wood.

Li Su also didn't want to cause the fire to be uncontrollable and cause a bad ecological impact, although he was a little worried, after all, the south was still relatively humid, and the wildfire could not spread far.

After burning for a long time, revealing the blackened black soil, Li Su recalled the terraced fields seen in the Geography Museum and the movie "Huo Yuanjia" in the later generations, and pointed his finger at those old farmers to make two or three steps of black soil into two or three steps to level.

There are also two types of terraced fields, one is dry field and the other is paddy field.

In later generations, the terraced fields in Yunnan, Guizhou and Zhejiang and Fujian are mostly paddy fields, and they want to plant rice, which is particularly troublesome to build, because they must be waterproof and seepage-proof, otherwise they can't store water at all, which is equivalent to building stones along the same as repairing swimming pools, and even partially mixed with triple soil clay joints.

In the future, if Liu Bei hits Nanzhong, he will build terraced fields in those places of Qiqi County and Yongchang County, because it is too southern to grow wheat, and it is estimated that he will have to make such water terraces that cost people and money.

However, it is still in the vicinity of Hanzhong, compared to the north, and can barely grow dryland crops, but the yield is a little lower, so it is not bothering to build anti-seepage edges.

In this way, the labor effort of cultivating one acre of new terraced fields is about equal to the manual labor of extensively cultivating more than ten acres of mature fields. If a Zhengding who cultivates 100 acres a year uses all his labor force to open up wasteland, he will open up six or seven Han acres a year, which is equivalent to about two acres in later generations.

If it is only opened in this winter slack season, it is divided by four, and a strong man will open less than two Han acres in one season.

Today, because Li Su and Lu Su were present to supervise and organize everyone to work together, and hundreds of laborers participated, a piece of land of five Han acres and about two steps was opened up in one day.

"It's too laborious, if a Zhengding cultivates a mature field, he can feed five people, and now to open this kind of waste, it will take fifteen years to open a mature field to feed five people, and it will take a long time to return to the capital."

Guo Yuan is more good at motivating and settling accounts, he silently calculated it next to him, and felt that Li Su's method was still not cost-effective.

Li Su patted him on the shoulder: "Ten years of trees, a hundred years of people." The significance of a stone grain here is not only a stone of grain, but also to open up the shipping of the Jialing River and revitalize the communication between the entire Shu region and the outside world.

What if it takes fifteen years to return to the capital, not to mention what if it returns to the capital in fifteen years, the population of Shu is now four or five million, and if it continues to grow, sooner or later it will be the same as the yellow scarves outside, there are more people and less land, and there is more labor and no land to plant, so it is better to organize them to open up this kind of wasteland.

Moreover, as long as the pilot continues, the efficiency will gradually improve - at the beginning, we should not build too dense terraces, just build three or four steps, and build three or four steps every few layers of woods, so as to prevent soil erosion during heavy rains. After planting the land, don't cut and burn the straw immediately like on the plain, keep the straw for solid soil and water storage, let it go for a winter, and burn the straw before spring ploughing in the next year, which can also prevent soil erosion and increase land fertility. ”

Li Su counted both the military account and the transportation loss account, and Guo Yuan felt that this business was a bit profitable.

But then another question came to his mind: "However, these fields are so much higher than flat fields that irrigation is too laborious." Although the water is close, there is so much water in the Jialing River, and it is really hard to pick it up to the mountain. ”

Li Su didn't expect this question at first, but some of the lights were dark, and he was reminded by Guo Yuan that he slapped his head: "Make a water truck!" Since the upstream Jialing River is so turbulent, build a big waterwheel to irrigate, and directly water it from the top terraced fields, which is more labor-saving than flat land irrigation. As long as one layer is watered, the flood irrigation is enough, and the following levels will automatically flow down. ”

The Han Dynasty must already have waterwheels, but they were not yet mature, not as efficient as the "overturned" that specialized in irrigation in the Sui and Tang dynasties, and the Han Dynasty people did not have the habit of erecting volleys of open channels.

Li Su recalled the know-how of overturned cars and wheeled large waterwheels seen in later history textbooks, and after a little diagram, he handed them over to the specific tuntian officials to ponder and perfect, and taught them to find the thickest bamboo, cut off the bamboo joints and erect them, at least the waterwheel could be driven to the high river water to the top terraced fields.

Ordinary peasants had no money or technology to build waterwheels, so they had to be organized by the government. However, since it is a tuntian, the government has already contributed enough, and it is a big deal to use "half of the harvest of these terraces in the first ten years after completion" to repay the official infrastructure investment.

Just like when I was in Liaodong, it was a nature to let the tun people pay cattle rent, which was nothing more than a waterwheel rent here.

Li Su felt that if he continued to toss like this, the entire Tuntian plan and the shipping plan supporting it would simply become a planned economy...... Perhaps like the government-funded highways, the toll will be collected for 10 or 20 years, and after the investment is recovered and a slight profit is made, the depreciated things will be handed over to the people to manage.

Li Su, who knows the difficulties well, is also very big, and secretly thinks in his heart:

"It would be good if Zhuge Liang had become a talent, he could formulate the 'Shu Branch', rely on the rule of law to ensure that 'officials do not tolerate treachery, people are self-reliant, the Tao is not forgotten, and the weather is solemn', and it would be best to be a Minister of Transportation and Director of the National Development and GAI Committee in the future. If we revitalize the state's infrastructure and the state-run planned economy, there will certainly be no one who is greedy. If Zhuge Liang didn't manage it, others wouldn't know how much they would damage the public and private......"

There are still people as selfless as Zhuge Liang in the world, but it is estimated that there will be no second person in this world who can be as sharp-eyed as Zhuge Liang, who can see through the small movements of his subordinates, and who are so selfless.

That's it, let's start a few years of muddled accounts, the wartime state, the money can't be calculated too clearly, just be a little inefficient, be picked up by the handler, pay the tuition and sum up the experience.

When Cao Cao engaged in Tuntian to rent cattle for the people, there were also greedy and cheap guys like Ding Pei, who put their old and thin cattle off the fat cattle of the public family to make the difference.

Li Su could fully imagine that Liu Bei's Tuntian officials would also have countless Ding Pei.

Wait for next year to enter Jiangzhou, and in the future, Liu Yan will be completely completed and Nanzhong will be pacified. Zhuge Liang will be ten years old this year, and he will be twelve or thirteen years old by then...... It seems that he is still a child laborer.

……

After inspecting and supervising the construction of terraced fields and waterwheels in Guangyuan Town for several days, although everything went smoothly, Lu Su, Guoyuan, and Sun Qian roughly calculated the accounts, and felt that with this speed of construction, after the spring ploughing is over next year, the surplus labor force population that can be fed here will still not be enough to pull the fiber and beach for the large army grain fleet besieging Diaoyu City and Jiangzhou for a long time, and there will be at least one or two times the shortfall.

Of course, this problem is not unsolvable for the time being, it is nothing more than transporting more grain, losing more on the road, transporting people from other places to these places to live temporarily, and pulling fiber for the ships that pass every day.

Heaping logistics losses, the problem can be solved after all, anyway, when Zhang Lu was destroyed, Hanzhong's official warehouse still had some savings.

I just don't know how long the siege of Diaoyu City will last at that time, if it can't be taken for a year, such a long-term long-distance grain siege will consume Liu Beijun's strategic potential.

In the end, Guo Yuan, who was still quite talented in Tuntian, put forward an objection to Li Su after personally going down to supervise and inspect it:

"Zhonglang, why do we have to pull the fiber for the grain ship? Anyway, when the beach crossed the turbulent river, the goods on the ship were originally to be unloaded, transported by land for more than ten miles, and then loaded onto the ship.

Let's divide the ship into several sections, the upstream ship will only open upstream, the downstream ship will only open downstream, and when it reaches the vicinity of the dangerous shoal, it will directly unload the cargo and turn around and go back to pull the first [www.biqugexx.xyz] second batch of goods, and the downstream ship will also pick up the cargo and leave, and the power of the empty ship will not be saved? ”

Li Su's heart flashed: Isn't this the organization method of those important towns on the Grand Canal in the Song and Ming dynasties?

During the Ming Dynasty, in Linqing, Shandong, a county town had a population of two million, and almost half of the strong laborers were trough and salt gangs, to put it bluntly, dock workers, unloading goods from the lower reaches of the Grand Canal and reloading them upstream. Because the Grand Canal did not use lock technology until the Ming Dynasty, there was an altitude difference between the north and the south, so the Grand Canal could only be cut off, and the manpower carried the work in the drop section to the high place to load the ship again.

Li Su thought in his heart: "Yes, why didn't I think of it?" Could it be that it's dark under my lamp? But in history, why did the Sichuan people pull the empty boat together for thousands of years? I remember that when I arrived at the Jinsha River during the Long March, the Sichuan army was still in Laojun Beach.

Yes, it must be because the shipping density on the Jinsha River and Jialing River in Sichuan is not as dense as that of the Grand Canal, and the scale of private private shipbuilders is not large enough, there are not enough ships, and there are not enough goods to form a segmented distribution center. In order to sell a batch of goods from downstream to upstream at one time, the ship can only follow the whole process. ”

However, Liu Beijun will have a continuous and stable order supply chain next year, and the demand for food transportation for the Diaoyu City siege army will not decline. There is an official organization, and the size of the total fleet is certainly guaranteed. The big deal is that the original 100 boats each boat ran the whole distance, but now it has been changed to change the whole journey of the Jialing River into five sections, with 20 boats in each section, and run the baton.

Moreover, it seems that this trick can also be used as a reference for Shangyong's Hanshui transportation improvement plan, and there is no need to count on the locks envisioned by Li Su at that time......

You are really a talent engaged in the "planned economy"!

"That's a good idea! I'll leave this matter to you, Zini, do this thing well, I will let the lord add you as the captain of Tuntian, if you keep behaving well, after taking Liu Yan, when your seniority is up, it is not impossible for Diannong Zhonglang to be a general! Li Su patted Guoyuan on the shoulder and made a contribution to this talent who invented the management method of "dock worker transfer station".

"How dare you do this, you are just a good general." Guo Yuan was suddenly very frightened.

How did he know that in a few years, the official position would not be as valuable as it is now, and when the time came, Cao Cao's subordinates would dare to seal several pawn farmers and generals, and Liu Bei's camp would not be able to suffer, right?

By that time, Li Su would not know what level he had been promoted to.

This winter, the waterwheels, terraces, and wharves will be roughly developed, and the top of the mountain will be planted with tea trees and pepper trees, so that the people can raise some chickens and ducks suitable for raising in the mountains and jungles, as well as rabbits that have not yet been artificially raised, so as to make use of the grazing resources of the barren mountains.

Next year, there will be an endless stream of military rations and high-shelf life peppercorns to support the Battle of Diaoyu City.