Da Qin: Comparing his sons, Ying Zheng was sour.

Farming Division, Forestry Division, Animal Husbandry Division, River Division, Textile Division, Herbs Division!

Weather group, fertilizer group, cultivation method group.......

Calendar Control Research Team, New Calendar Derivation Research Team, Four Seasons Solar Term Derivation Research Team......

Looking at the lower-level departments of the Ministry of Agriculture divided by Prince Fusu on the canopy, Wang Jian of Wucheng Marquis issued a question in disbelief:

"Is this Eminem farming?"

He has lived for most of his life, and although he has never farmed himself, he has also seen a lot of Qianshou farming.

However, none of the Qiantou farmed like this!

In his opinion, this is no longer farming, and it is not too much to say that it is a march to war!

No, even his marching and fighting were not as finely divided as the agricultural department on the canopy.

"Or is that how those so-called peasant children farm?"

At this moment, Wang Qian, Marquis of Wucheng, had great curiosity about the peasant disciples who had not yet entered Qin.

Far away in other counties and counties in the Qin State, Chen Xiang, Chen Xin and other peasant children who were taking the initiative to pack their luggage and prepare to pack themselves and send them to Xianyang hurriedly shook their heads and said:

Don't believe rumors!

Don't spread rumors!

That's not how their peasant children farm!

Well, at least not that way farming was and is now.

But when they enter Qin to meet the First Emperor and get the First Emperor's reuse, it may be over.

After seeing the detailed division of the various departments and groups of the Ministry of Agriculture by Prince Fusu on the canopy, Chen Xiang, Chen Xin and other peasant children can be said to have their eyes shining!

As the saying goes, without contrast, there is no gap.

Once compared, it's a world of difference.

Compare the farming method proposed by the prince Fusu on the canopy with the previous farming method of their peasant children.

Chen Xiang, Chen Xin and other peasant children have only one feeling in their hearts, that is, backwardness!

In the past, the way the children of the peasants studied farming was too backward!

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They are also studying how to farm, and I am afraid that the farming research method proposed by the prince Fusu on the canopy of heaven will be far better than the research results of their past peasant children for hundreds of years!

If the children of the peasant families on the canopy were allowed to study the farming and research methods proposed by the prince Fusu for ten years, or even for twenty years, how much would the grain yield per mu in the world reach?

Is it from the current yield of three stones per mu to four stones per mu?

Or is it still from four stones per mu to five stones per mu?

Even from five stones per mu to six stones per mu that they dare not imagine?

Thinking of this, Chen Xiang, Chen Xin and other peasant children couldn't help but be short of breath and panting like cattle.

An additional thing to note here is that although the names used as weights and measures are the same in all dynasties, the actual weight of each of them is different at different times.

For example, it is mentioned in "Huainanzi Master Training": "Ten acres of land, the harvest of the year, is only forty stones." "

This means that the yield per mu of rice is 4 koku, and when converted into rice, it is 2.4 koku.

And in the "Book of the Later Han Dynasty: The Biography of Zhongchang", it is mentioned: "The rate of fertilization, the entry of the grain wall, and the harvest of three stones per mu." "

This says that the yield of wheat per mu is 3 stones.

However, one stone in this period of the Qin and Han dynasties was equal to about 14 kilograms, and 1 mu was about 0.69 city acres.

In other words, if you look at it by today's measurement standards.

During the Qin and Han dynasties, 0.69 mu of wheat produced about 84 catties of grain, and the same 0.69 mu of rice produced about 67.2 catties of grain

In other words, the grain yield per mu in the Qin and Han dynasties was: wheat in the north, 120 catties per mu, and rice in the south, 96 catties per mu.

In the Sui and Tang dynasties, the weight and size of the units of measurement of stone and mu actually changed.

Among them, 1 stone in the Sui and Tang dynasties is about 42 kilograms, and 1 mu is about 0.8 city acres.

It is estimated from Di Renjie's "Begging and Exemption from People's Rent" that the yield of rice per mu in the south is about 1.5 stones.

The "New Tang Dynasty Book Food and Goods Chronicle" recorded: "One hectare of 100 acres, more than 50 acres of rice (stone)." "

The yield of corn per mu is more than 5 buckets, and if it is converted into wheat, it is about 1 stone (wheat does not need to be hulled).

Therefore, the grain yield per mu in the Sui and Tang dynasties was: wheat in the north, 105 jin/mu, and rice in the south, 157 jin/mu.

Among them, the yield of rice can be significantly improved, and this is mainly due to the reunification of the country and the development of the south by the Southern Dynasties, which has created favorable conditions for the increase of rice yield per mu.

In the Song and Song dynasties, the weight and size of the units of measurement actually represented by the stone and mu changed again.

In the Song and Song dynasties, 1 stone was 49 kilograms, and 1 mu was 0.9 city acres.

According to Fan Zhongyan's "Ten Things in Answering the Edict of Chen": "The benefits of Zhongni are two to three stones of rice per mu. "

Zhu Xi mentioned in "The Statement of Famine Relief": "Two stones per mu of rice. "

It can be roughly inferred that the yield of rice per mu in the south during this period should be 2 stone of rice.

And Fan Zhongyan's "Shangzhi Shu" mentions: "Stealing one acre of Zhongtian is no more than one Hu (stone) from millet." "

From this, it can also be roughly seen that the yield per mu of millet is 1 stone, and wheat is similar.

Therefore, the grain yield per mu in the Song and Song dynasties was about 110 jin per mu of wheat in the north and 220 jin per mu of rice in the south.

It can be seen from this that the yield per mu of rice in the south has been further increased.

This was mainly due to the continued southward migration of agriculture, the construction of a large number of water conservancy facilities in the south by the Song and Song dynasties, and the introduction of high-yielding rice varieties such as Champong rice.

In the end, the grain output, especially the output of rice, increased significantly, and the Jiangsu and Zhejiang regions around the Taihu Lake gradually became the granary of the Song Dynasty.

Finally, in the Ming and Qing dynasties, the weight and size of the actual unit of measurement of stone and mu also changed again.

During the Ming and Qing dynasties, 1 stone was 70 kilograms, and 1 mu was 0.92 city acres.

According to Gu Yanwu's mention in "Daily Knowledge": "Small people rent rich room fields, and rent one stone per mu. "

Among them, the tax is 50%, which can roughly deduce that the yield per mu is 2 stone rice.

According to the "Hejian Chronicles": "A husband cultivates thirty or fifty acres of land, and harvests more than one stone of wheat per mu." "

During this period, the yield of wheat exceeded 1 stone.

Therefore, the grain yield per mu in the Ming and Qing dynasties was roughly 155 jin per mu of wheat in the north and 305 jin per mu of rice in the south.

Both rice and wheat in the south were further increased during this period.

This is mainly due to the fact that the rotation system of double cropping rice and wheat rice double cropping has been popularized in this era, and agricultural science and technology have also reached a peak.

Therefore, if you only look at the grain yield per mu of various dynasties in the past with the "stone" and "mu" on the bright surface, you will find a very strange thing.

That is, in the Qin and Han dynasties, the yield of grain per mu was still "three stones per mu", "four stones per mu", and even "five stones per mu".

Why did the grain yield per mu fall to "one or two stones per mu" after the Sui and Tang dynasties?

Doesn't it mean that the yield of grain per mu is getting higher and higher, and the development of agricultural science and technology is becoming more and more developed?

And the fundamental reason for this is that the weight and size of "stone" and "mu" after the Sui and Tang dynasties have changed.

In particular, the weight unit of "stone" skyrocketed from 14 kilograms in the Qin and Han dynasties to 70 kilograms in the Ming and Qing dynasties!

Therefore, Chen Xiang, Chen Xin and others said that "three stones per mu", "four stones per mu", "five stones per mu", and "six stones per mu" actually refer to 84 catties, 112 catties, 140 catties, and 168 catties per mu in 0.69 city.

However, even if it is only 168 catties of grain per mu, it is already a grain yield per mu that people in this era dare not imagine.

After all, the yield of three stones per mu (0.69 city yield of 84 catties per mu) is the normal average yield per mu in this era, and if the yield of four stones per mu is only fertile fields or peasant children who are proficient in agricultural affairs, they can be planted.

As for the yield of five koku per mu, it is difficult to grow even a fertile field and the children of a peasant family who are proficient in farming.

If someone can produce six stones per mu, then don't say anything, the six stones of grain produced by this mu of land are auspicious!

And as long as you can steadily and repeatedly grow the amount of grain that yields six stones per mu, you are the agricultural saint of this era!

As the head of the farmer's family, Xu Zi is still alive at this time.

Then he will pull you respectfully and let you sit in the position of the farmer's handle.

Then they will add a "son" or "gong" to your surname or name to show respect, and finally lead a large group of peasant disciples to call you "so-and-so" and "so-and-so".

If Xu Zi is already dead, then other peasant children will also complete the above process in his place.

And if you can spread the cultivation method that can stably grow grain per acre.

In the future, unless others don't know your name, or even if they know your name, they can't actually match that name with you as a person.

So it is possible that in ignorance, they will accidentally bump into you.

But as long as others know that you are the great sage who can make the whole world grow six stone grains stably, and you also tell the whole world about this method.

Then in this day and age, you will definitely not encounter any danger.

In other words, even if you encounter any danger, as long as the person who knows your name and recognizes your value is not completely dead, you will not be in real danger!

At least the children of the peasant family and the children of the Mo family, after knowing your existence and confirming that you are really able to repeatedly grow grain with a yield of six stones per mu, they will mix in with you as soon as possible, and then silently protect you.

And when you are in danger, risk your life to protect you!

If the person protecting you dies at this time, then as long as you are not killed on the spot, but simply imprisoned.

Then in less than a day, a large group of righteous and chivalrous men from all countries in the world will come to rescue you after hearing the news.

Or the jailer in charge of holding you will secretly release you while the officials are unprepared.

In addition to the children of peasant families, the children of the Mo family, and the knights and righteous men of all countries in the world.

When the other princes heard the news of your arrest, they will also do their best to mobilize their disciples and disciples to help you when you are in danger.

After all, even if the other hundred schools of thought do not agree with what you said, the sons of the hundred schools themselves also want to eat the wheat rice grown by your peasant children.

And the hundreds of schools of thought also know more that a person who can make the whole world eat is very important to this world!

This is the importance of increasing the yield per mu of grain from the current yield of three stones per mu to six stones per mu!

Chen Xiang, Chen Xin and other peasant children are now from the more advanced farming research methods proposed by Prince Fusu.

I saw the hope that the current average yield of three stones per mu of grain would be increased to an average yield of four stones per mu, five stones per mu, and even six stones per mu!

If they didn't know how to fly, at this moment they really wanted to fly directly to Xianyang City, and then hug the thigh of the First Emperor, so that the First Emperor could vigorously allocate money, grain, people, and fields......

In a word, just like the prince Fusu on the canopy, he supported their farmers, and asked them to set up six divisions and teams, and then each did its duty and did its duty to study how to increase grain production! .