Winter had not yet passed, and the relocation of Tiance Mansion from Lishi to Jinyang had not yet begun, and Lu Bu had gradually healed from the external injuries he had suffered during the battle in Yuanyin, and he did not want to be idle anymore. Pen, fun, and www.biquge.info

He sent someone to fetch a few pieces of the walk-behind plough used by the peasants near Lishi, carefully observed and experienced it, and then determined that there was no convenient and lightweight zigzag plow in this era.

In his previous life, Lü Bu liked to carry a camera bag around and collect style, and he had traveled to many remote villages, seen farmers in backward areas use oxen to pull quyuan plows to plough the fields, and even went down to the fields to try it himself. He felt that the Quyuan plow, which had been seriously backward in later generations, was an advanced production tool that surpassed the agricultural technology of the Han Dynasty.

The land is barren and the population is sparse, but there is no shortage of large livestock pulling ploughs, and if the quyuan plough can be made, the area of land cultivated by adult males can be greatly increased.

There are millions of acres of fertile land available for cultivation in the Hetao area, so there is great potential for the growth of the population and grain in Bingzhou, as long as Lü Bu guarantees the security of Bingzhou militarily, and in the future, it is not delusional to achieve self-sufficiency in grain by popularizing advanced farming techniques and agricultural tools such as manure farming, zigzag plough and keel waterwheel.

Lu Bu knows how to sketch, which is related to his love of photography and painting in his previous life. He relied on his memory to draw the shape and structure of the Quyuan plough in his impression on paper in the form of sketches, and then invited several carpenters, blacksmiths and coppersmiths with the highest skills in the Tiance army to come over and jointly tackle key problems.

Lu Bu told the craftsman that compared with the plough used by farmers now, the curved plough is mainly to change the straight wheel and long wheel to the curved wheel and short wheel, and install a plow disc that can rotate freely on the head of the wheel, which not only makes the plow frame lightweight, but also easy to turn around and turn, so that the ploughshare can be inserted deeper into the soil, and the operation is more flexible, and the most important thing is that it can save manpower and animal power.

Lü Bu gave a detailed division of labor to the three types of craftsmen, in which the carpenter first made a model of the wood according to the sketch paper, then the blacksmith tried and shaped the parts that needed to be cast with iron, such as the ploughshare, and the coppersmith made the small parts that needed to be connected and snapped with copper.

After more than ten days of research and construction, three sets of curved ploughs for different tensile forces were finally placed in the backyard of Tiance Mansion.

Among the three sets of curved ploughs, the plough pulled by the plough ox is the largest, and the length of the ploughshare is also the longest; The horse-drawn plough is of medium shape, and the size and weight of the ploughshare are three percent lighter than that of the oxen plow; The plough pulled by a human is small in size, and its weight is only two to three times that of an ox plow.

Although something has been made, how long it works needs to be compared through experimentation.

Lu Bu gave an order, and the guards carefully lifted the three sets of quyuan plows into the carriage, and then marched out of the city and went straight to a field in the military camp outside the city.

According to Lu Bu's request, the military cantonment officer found some soldiers who could plough the fields with similar stature and strength, and then divided them into six groups, including three groups using the new-style curved plough and three groups using the old-style straight plow. At the same time, the military officer also brought his subordinates two oxen of similar strength and two horses of similar strength that had been tested in advance.

The six groups of soldiers who participated in the test were lined up, and each group needed to complete the same cultivation area, and they began to go to the field at the same time, and Lu Bu, Lu Zhi, Fu Zhu, Chen Gong, Zhang Fan and others all stood on the edge of the field and watched the soldiers plow.

Don't underestimate this test, it's more important than the horseshoe, Takahashi saddle and stirrups. Whoever can solve the problem of eating for the people will always be invincible, which is the most simple and practical last word.

Two hours later, the first test was over, and Jia Kui, who was in charge of statistics, quickly reported the area and depth of cultivation completed by each group to Lu Bu in a horizontal table.

After reading it, Lu Bu had a satisfied smile on his face.

The new type of curved plough is eighty percent better than the old plow! If some of these unreasonable design parts are further adjusted and transformed, then the new curved plough can bring about an exponential increase in ploughing efficiency!

In order to confirm that there was no moisture in these data, in the next few days, Tiance Mansion sent ten sets of new quyuan plows that had been adjusted and rushed to Gaowolf, Lin County, and Zhongyang, and other places, respectively, in different soil environments such as slopes, paddy fields, and sandy lands for comparative testing.

Ten days later, the county commander who was personally in charge of the matter in each county sent a report to the Tiance Mansion, confirming that the new quyuan plough can improve the efficiency of plowing by at least eight to ninety percent!

Lü Bu immediately signed a warrant from the general, asking all localities to immediately send craftsmen who were willing to join the Tiance Army to come to Lishi to learn the manufacturing technology of the new Quyuan plow, and then make the new Quyuan plough on a large scale before the spring ploughing began.

Changshi Lu Zhi did not consult Lü Bu and instructed the Chinese officials of the prefecture to call the new quyuan plough a general plough, and named it so in official documents.

Lu Zhi arranged this way, naturally to improve Lu Bu's prestige and accumulate fame and popularity for him. In the future, after this new type of plough was popularized in Bingzhou, everyone shouted one by one, and naturally thought about Lu Bu's goodness.

Since he made Quyuan Plow, Lu Bu seems to have opened a plug-in, and he is busy scribbling and drawing in the study every day, so that the Zuo Bo paper in the house has become a shortage for a while. When Li Hei came to report to him that there was no paper, Lu Bu asked Song Xian and Hou Chengdu to call over.

Lu Bu said to Song Xian: "You immediately pack up your things now, take a team of men with sharp hands and feet, and go to Guanzhong to find two people for me." One of them is named Ma Jun, who has a stuttering problem and has a poor family. Another person is named Du Ji, who used to be a Zheng County Commander in Hanzhong. After meeting them, they said that I am willing to arrange important official positions for them in Bingzhou, and if they are unwilling to come, they will tie me back! ”

Lu Bu then said to Hou Cheng: "The task I gave you is also to find someone, but the direction is different from Song Xian, you have to go to the vicinity of Luyang to find a person named Han Ji for me first." I heard that this man was a descendant of Han Shin, and he was famous for trying to kill his father's enemy and sacrifice his head at his father's grave. When you have seen him, tell him that I will make him a ruler and that he and his people will be safe in the future. If he doesn't want to come, you can also use force, in short, I must see Han Ji standing in front of me alive! ”

Song Xian and Hou Cheng received Lü Bu's secret order, and immediately received some gold from the treasury as a coil on the road, and then gave it to the team with a hundred people, starting from Lishi together, and separated when passing through Hedong, one team to the west and the other to the east.

Not long after the team sent by Lu Bu to search for people left, his subordinates reported to him that Hua Tuo, a native of Peiguo County, had asked for a meeting outside the mansion with a few apprentices.

Lu Bu was overjoyed when he heard this, and hurriedly asked people to lead Hua Tuo into the mansion.