PS: Chapter Anti-theft, Correction tomorrow morning……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Bingzhou is on the edge of agricultural civilization. When it goes west to north, the climatic conditions are not suitable for farming, so it enters the area of ​​nomadic civilization north and west of Bingzhou.

Since it was on the edge of the farming circle, the natural conditions were relatively bad, and the Central Plains dynasty was basically a semi-give upset to Bingzhou. Since the large number of Hu people moved inward in the late Eastern Han Dynasty, Bingzhou has almost become a place where Hu and Han live together. Many Han people's arable land were seized by Hu people to herd horses and sheep.

If Cao Liang had not defeated the Huns, expelled the Xianbei, and completely recovered Bingzhou, then Bingzhou would have further fallen into the territory of the Hu people in the last few decades and become its base for attacking the Central Plains.

Now Cao Liang defeated the Xiongnu and Xianbei and brought Bingzhou back to the Han people, which can be regarded as eliminating the catastrophe of the Han people.

But now Cao Liang competes with Sima Yi, who controls most of the Wei Kingdom, with one state, and there is a huge gap in strength in terms of power comparison. Therefore, at this stage, Cao Liang can only adopt a defensive posture, preserve his strength in defense and strengthen it.

The Battle of Shangdang repelled Sima Yi's attack and set a good start for the contest between Cao Liang and Sima Yi. Taking advantage of Sima Yi's concentration on Wang Ling in Huainan, Cao Liang was not idle either. Developing his own strength is the most important thing.

After he invented the curved plow, he greatly improved the agricultural production efficiency, but it was far from enough that the curved plow was just a drought. The climate in Bingzhou was much less rainy than that in the Central Plains, and it was even more incomparable to the south. If the weather was normal, the weather was good, the harvest would be good.

However, once there is a severe drought, it is likely that there will be no harvest. Therefore, if you want to maintain stable grain production, you must make a big deal about the construction of water conservancy.

Deng Ai is a good player in this regard, so Cao Liang specially pulled Deng Ai out to temporarily take charge of the water conservancy construction.

The largest river in Bingzhou is the Fen River. The Fen River is also the second largest tributary of the Yellow River after the Wei River. The Fen River Plain is also the largest plain in Bingzhou. More than 80% of the arable land in Bingzhou area is concentrated on the Fen River Plain.

How to improve the cultivation conditions of these arable lands and achieve the goal of sustained high yields, the development of water conservancy is undoubtedly the most effective means. If the Fen River and its tributaries can irrigate the fields, the problem of severe drought reduction can be solved relatively safely.

After receiving this appointment, Deng Ai immediately worked tirelessly and traveled around Bingzhou to investigate the situation.

Deng Ai was originally a military farm official. If he hadn't met Cao Liang, Deng Ai even thought he would have worked in managing military farming for the rest of his life. He was excited to go to Luoyang with a Huainan Water Conservancy Map. He thought he could do a lot, but he did not expect that after meeting Sima Zhao, the then Diannong General, the plan he had to be proud of was abandoned by the other party.

For this reason, Deng Ai was sad and depressed for a while, feeling that his career had been completely blocked. However, he did not expect that under Cao Liang's arrangement, he changed his career and became a general, and he was promoted from Sima of another department to a captain, and now he became a general of Yue cavalry. Deng Ai's military talent showed his full strength.

However, Cao Liang was obviously still thinking about Deng Ai's talent in farming water conservancy, and he gave full responsibility for the task of developing water conservancy in Bingzhou. Deng Ai also lived up to his expectations and completed this task outstandingly.

He built many new dams upstream of many tributaries of the Fen River, and in the slack season, he organized the people to dig many channels, so that the river water was introduced into the farmland.

The main reason why dams were built upstream of each tributary is related to the technical level of this era. Generally, the water volume in the upper reaches of the river is small and the river surface is relatively narrow. When the construction starts during the dry winter, the stone-making method can be used to build a dam. The water volume in the middle and lower reaches is generally relatively abundant. With the current technical conditions, it is quite difficult to build a dam in a turbulent river.

Therefore, Deng Ai was smarter to avoid river sections with relatively large flow, which reduced the project a lot. Moreover, building dams upstream of each river. Due to the high terrain, as long as a relatively suitable channel can be built, it can almost cover most of the arable land.

Even if the introduced river water flows through places with relatively terrain and there is a keel water truck, there is no need to worry about not being able to water the ground.

In fact, after Ma Jun invented the keel water wheel, he only used it in Luoyang and its surrounding areas, and Bingzhou had never been introduced. While Cao Liang was working on water conservancy, he asked craftsmen to build thousands of keel water wheels and placed them in places where they needed it, almost spread throughout the Jinzhong Plain. The scene was spectacular. I believe that Ma Jun saw it, and it was enough to smile.

In fact, in ancient times, there was no shortage of smart inventors, but due to the obstruction of news and the limited dissemination conditions, many inventions that were originally extremely beneficial to the people have never been promoted.

For example, Cai Lun improved papermaking. In theory, paper should have been promoted and used quickly, but two hundred years have passed, and bamboo slips and wooden slips have not yet withdrawn from the stage of history. Not only are there many people used them, but even many official documents are still using these bulky writing tools, which makes Cao Liang sigh that in this era, the pace is really terrible.

You should know that in the past two hundred years, all technological inventions have made rapid progress and are changing with each passing day. In terms of speed, this era is riding a ox cart, and later generations are riding a rocket, which is absolutely not the same.

Cao Liang set up Dian Agricultural Officers in various parts of Bingzhou, and did not slacken in agricultural production at all, and did not reduce the promotion of scientific and technological inventions. Not only the curved plows, keel bone water trucks, but also many inventions and creations that are beneficial to agriculture are promoted in an orderly manner in various parts of Bingzhou according to Cao Liang's requirements.

This also includes the production method of intensive cultivation. In the Han and Wei dynasties, agriculture was basically in a broad-based planting. Farmers buried seeds in the field and then relied on the weather to make a living. No wonder Cao Liang was surprised when he first went to the field to inspect the harvest of crops. Why did such a large area of ​​fields produce only such a pitiful little grain?

At best, it is only a little more than seeds. If the crops are caused by drought and flooding, even the seeds that have been invested in cannot be harvested.

Such extensive planting and thin harvesting not only wastes seeds, but also wastes a lot of manpower and material resources. To solve the problem of poor harvesting of grain, you have to work hard on meticulous cultivation.
Chapter completed!