Zhang Han lives in Zhangwu and reads books every day, where do you know these things. It was only after the clan learned that he moved to Bian Nan that he discovered this problem. Zhang Han intends to improve this problem. In his opinion, the improvement work is simple, and the best of both is the best of the two. However, he was very busy at the time, and he never poured out his efforts after that.

Later, Zhang Han inadvertently discovered that someone was making this attempt. So, after careful observation, he felt that it was okay, so he provided a lot of convenience to the man, so that he could concentrate on improving the Quyuan plow.

That person was Han Laoqi, a blacksmith in Bian Nanzhuang, whose daily work was mainly to repair broken farm tools. His craft is mediocre, but he likes to do weird things. Sun Chengliang, the steward of Bian Nanzhuang, looked down on Han Laoqi very much - "I don't do a good job by myself, and I still think about some crooked ways, and I don't do my job." Han Laoqi closed Zhang Han's eyes, and he let him go happily.

Don't look at Han Laoqi's lack of learning in the art of striking iron, he is still very interested in studying this. Anyway, which part is easy to use, Han Laoqi simply grafted Quyuan on the cocoon plow, and then innovatively used two bins to pack seeds and fertilizers, so that the Quyuan cocoon plow is light and flexible at the same time, but also has the sowing function of the cocoon plow. The addition of bins is the only innovation, which allows fertilization to be done at the same time as sowing.

In general, the effect of the curved plough is good. Zhang Han praised Han Laoqi a lot. However, he immediately put forward higher requirements: the curved plough should be able to control the depth of the soil, the width of the soil; When ploughing, it should be easy to maintain stability and achieve the same depth; Be able to freely adjust the amount of seeds and fertilizer; It is necessary to improve the efficiency of sowing; It is necessary to complete the four processes of ditching, planting, covering and compaction at one time; ……

In short, Zhang Han required the plough to be able to adapt to various terrains, sow all kinds of crops, be durable, and easy to operate.

Han Laoqi smiled and went to report the good news, but returned home with a deflated face, and muttered to his daughter-in-law in private, "Could it be that the little young master treats me as a Luban......"

Complaining is complaining, and if Han Laoqi wants to go back to striking iron, he would rather spend more time on these.

When it comes to improving efficiency, Zhang Han also knows one of the simplest ways - the quyuan plough is lighter, and the sowing efficiency will be immediately improved after replacing the ploughing ox with the ploughing horse.

The use of ploughing horses for farming is not uncommon in the Great Han Kingdom, and there is no shortage of horses in the Great Han Kingdom.

Qin Ma is a river horse, tall and stout, not inferior to modern horses, the hind limbs are well developed, strong pulling force, can endure hard work, although the running speed is low, the legs are short and the ears are large, but the horse has no requirements for speed, it is an excellent horse. In the Han Dynasty, a large number of Mongolian horses were introduced, with rough and strong physique, solid and powerful limbs, hard hooves, cold resistance, strong adaptability, and strong staying power, which is also a very good horse.

With nutritious, protein-rich alfalfa, raising horses is no longer the same as before, with a lot of fine grains to eat – raising one horse is equivalent to the food consumption of six people. In this case, the cost of raising a horse is about the same as that of raising a cow, although the cost of a ploughing horse is more than double, and from the perspective of efficiency, it is also cost-effective to use a ploughing horse.

However, Han Laoqi was preparing to increase the number of small iron ploughshares from three to more, which also improved efficiency, but also increased resistance, and the improved Quyuan plough could not use ploughing horses, but could only use ploughing oxen to plough the land. In this case, it is uncertain how efficient the ploughing cattle and ploughing horses will be.

Unless, Zhang Han nailed the horseshoe to the ploughing horse. In that way, horses will be twice as efficient plowing the fields as oxen. But this is simple and easy to learn, but it is a strategic invention, and Zhang Han is not even willing to take out the stirrup, let alone the horseshoe. These things, in Zhang Han's mind, swept by, and he would not say it.

At the foot of the hillside in the distance, there are still large patches of alfalfa that have not been harvested, and some purple flowers are scattered in between, which is also a good scenery in the early winter days. Bian Nanzhuang has a family study, and there are more than 100 extra horses, but he can't use these many alfalfa. It is estimated that the silage needed for winter and spring has been cut, Zhang Chengdong and others have cut a large pile of alfalfa, piling up large and small biogas digesters in the village, but Bian Nanzhuang still has more than a third of alfalfa thrown there.

Speaking of which, Zhang Chengdong can also harvest alfalfa and bury it in the field as green manure, but considering the labor cost, Zhang Chengdong would rather plant green manure.

From the foot of the mountain to the wheat fields, there is a depression that, at Zhang Han's suggestion, was dug into a fish pond for fish farming. The excavated soil was piled up into an embankment, and mulberry trees and fruit trees were planted on the bank. Aquatic vegetables such as cocoon white are planted on the edge of the pond, and a pigsty is erected on the pond for raising pigs. In this way, pigs can be raised without occupying arable land, and pig manure falls directly into the pond to feed fish. Rice is planted on a trial basis in the farmland outside the embankment, and the rice fields are also used for fish farming, mainly carp, grass carp, crucian carp and catfish. Through the drainage and irrigation of the reservoir, the paddy fields can be harvested in drought and flood.

Fish farming in paddy fields requires digging "fish slips" or "fish ditches" for fish to move and rest in paddy fields, setting up water inlets and outlets on the ridges, and installing fish traps. Fish slips near the edge of the field and the corners of the field can be planted with low shelves, melons (melons) and beans can be planted underneath, and they can be used to climb the vines to shade the sun and make full use of the solar energy.

The Book of Heaven records several breeding methods that make full use of feed. This method of "pig manure feeding fish, pond mud fertilizing trees, mulberry leaves feeding silkworms, and silkworm feces seeds" is one of them. In addition, there are three methods: "chicken manure to raise pigs, pig manure to biogas, biogas residue to feed fish, pond mud to manure trees, and small trash fish meal to feed chickens and pigs".

Frankly speaking, although he was full of respect for the Book of Heaven and burned incense for Guangshouzi, Zhang Wang was very uncomfortable when he saw these methods. Raising fish in rice fields is a good idea. However, when she took the things fed with dung and ate them, she felt that she couldn't explain them.

It's not that the Han Kingdom is unaware of the surplus value of using manure, and many families build toilets and pigstys together and use manure to raise pigs. However, it was the breeding pigs that were fed, and the pigs were not meant to be eaten. Except for the extremely poor, no one eats it.

Zhang Wang arranged the matter, but he felt uncomfortable, so he quietly told Zhang Han about his thoughts.

Zhang Han listened to his mother's concerns and couldn't help but be stunned.

"......, what's this? Those grains, vegetables, and fruits are not all watered with manure, and they are not eaten as well...... Besides, if you really don't get used to it, you can breed it alone and raise it separately for what you eat......"

This makes sense, but Zhang Wang's is a psychological problem, not that he doesn't understand the reason. Zhang Han has two lifetimes of experience, and his psychology is much more mature, but he does not have such a delicate and sensitive feeling. Therefore, Zhang Han's truth only received a solid brain jump. After thinking about it repeatedly, Zhang Wang's family decided to raise some more for his family to eat.

Native to tropical Asia, rice is one of the main food crops in China and the most important food crop. China has a long history of rice cultivation, counting from the Hemudu period, the history of rice cultivation in China has been six or seven thousand years.

Of course, the rice grown in Bian Nanzhuang cannot be such an ancient variety. On the contrary, the several types of rice grown in the rice fields were first seen in the land of the Great Han Kingdom. They come from the area around Ninan County in Jiaozhou, Nanhai Province, and are excellent varieties found according to the records of the Book of Heaven. Among them, Linyi (i.e., Champong) rice is the most eye-catching. Linyi rice is drought tolerant, does not have high requirements for growing land, and has a short growth period before adaptability.

In the rice trial planting at the end of the summer of the first year of Xiping (172), it took only 57 or 8 days for Linyi rice to be harvested from planting to harvesting, and although the yield of small mu was not large, only between three or four stones, Sun Chengliang was greatly surprised. If the first crop of rice is planted early for a period of time, before the cold, you can plant another season, and after two seasons, the yield per mu is not as much as six or seven stones.

Therefore, the taste of Linyi rice is not as good as ordinary rice, and rice is more labor-intensive than wheat, Sun Chengliang also attaches great importance to it, and reports to Zhang Han and Zhang Wang's family, and he can't let the whole world know the news. Zhang Han quickly stopped him, this matter must be kept secret - quietly talk to Zhang Wang's family, that is, don't make a noise. However, we can try to plant more in the coming year.

If the grain is harvested, it will not be worthwhile, and the price of grain will be reduced, Sun Chengliang understood this very well, and immediately assured Zhang Han that he would keep it strictly confidential and not let anyone know.

[Be kind, read a book and smash the ticket]

PS: There is one more change in the evening.