Chapter 1163： "1 acre 3 points" trial planting sweet potatoes

After eating three different breakfasts, Emperor Zhengde hiccupped and asked:

"Ma Guozhu, I have tasted the three ways to eat sweet potatoes. It's really good. However, is it true that the one-kilo per kilogram or even two thousand kilograms per mu?

The ministers nodded one after another. If Marlin said, who will be hungry in the future? In Daming, the poorest people also have acres of thin land. According to Marin, even if the land is thin, the yield per mu is more than 1,000 jin. 5 acres of thin land, is it at least 5ooo pound sweet potatoes? Even if half of it is used to pay the rent tax, 25oo kg is still left, which is definitely enough for a family of five to eat hard.

The most incredible thing is that Marin actually said that the Loess Plateau in northern Shaanxi is also very suitable for planting sweet potatoes. This is not enough. Northern Shaanxi belongs to the trilateral governor's jurisdiction and is one of the worst agricultural areas in Daming.

To describe Northern Shaanxi in one sentence, it is "the poor mountains and the evil waters are out of the way". Because the loess is barren, wheat is basically not grown there, but millet. The main reason is that irrigation is difficult there, and it is difficult to grow wheat that requires large amounts of water.

However, millet yield per mu is low, and the loess is barren, and the yield per mu in northern Shaanxi is only a hundred pounds. Even if the family has 2o acres of land, it still clinks poorly.

If the sweet potato is really suitable for planting in the loess high **** area of ​​northern Shaanxi, even if it is a kilogram per mu, 2o acres of dry land can produce 20,000 kilograms, which will definitely keep the local people away from hunger.

Therefore, not only Zhengde, but also others do not believe that sweet potatoes have such a high yield per mu. Moreover, everyone doubts that Marin bragging ...

...

Marin thought about it, and now he has just entered the second half of the lunar calendar, which is in the summer. In later generations, sweet potatoes have a branch called autumn sweet potatoes {according to the harvest period}, or summer sweet potatoes {according to the planting period}. Autumn sweet potatoes are grown in July and harvested from 1o to November.

So Marin answered directly:

"Your Majesty, the minister can personally be responsible for planting and show everyone the results!"

"Now planting? Is it too late?" Zhengde hesitated, and another month was about to fall, as if there was not enough time.

"Not too late, the sweet potato grows short, up to 4 months, now planted, just right!"

Then, Marin found hundreds of pounds of fresh sweet potatoes, washed them, put them in a hot and humid environment, and let their buds ...

When I saw a piece of sweet potato starting to sprout, I cut it down and used it as a plant seed to further cultivate ...

Then, the parts of the sweet potatoes that have sprouted are planted in the soil and fertilized ...

The place where Marin planted sweet potatoes was arranged on the "one acre and three points of land" used by the emperor for show cultivation ...

The so-called "one acre and three points of land" originally refers to the small field of land that the emperor of the ploughing farm near the Xiannongtan in the capital presided over during the spring ploughing ceremony. Of course, the emperor's arable land was only a symbolic meaning, so he went back and forth four times, and then flashed people and taught the full-time farmers to cultivate.

In order to express the importance of sweet potatoes, Emperor Zhengde allowed farmers who usually manage "one acre of three points" to free up three points of land to plant autumn sweet potatoes exclusively for Marin.

Then, Marin became a professional farmer, cultivating sweet potato buds while letting people cultivate the land so that the germinated sweet potatoes could be planted in the ground ...

After planting the ground, Marin did not relax, but was busy. In order to ensure the production of sweet potatoes, the most basic manure is essential. There is also plant ash, which is indispensable as soil potassium fertilizer.

The only thing that hurts Marin is that phosphate fertilizer is not easy to handle, even if it is native phosphate ...

For a long time, ancient Chinese agriculture was very popular, and the use of manure became popular in the Han Dynasty, which led to high grain output. Later, the plants and ash containing potassium also can fertilize the field.

Therefore, although Chinese farmers did not understand what is meant by "three fertilizers are complete", they also learned to apply nitrogen fertilizer {manure} and potassium fertilizer {grass ash} by mistake.

But phosphate fertilizer is really rare. In addition to the phosphate rock in nature, there is only bone powder with some phosphorus ...

However, the role of phosphate fertilizer is quite large, which can shorten the growth cycle of crops, increase crop yield, improve crop quality, etc ...

But Marin didn't want to reveal the secret of phosphate fertilizer to Daming, because Daming officials couldn't hide things in their minds. There was something good about them, and they must be in a hurry to show them.

People in the Ming Dynasty knew these secrets and Marin was not worried. After all, the agriculture of the Ming Dynasty was already there. However, if Europeans know this, it would be bad ...

Marin's ability to become a top rich prince in Europe who can support a 60,000 army has a lot to do with the use of advanced agricultural technology unknown to other countries.

If he tells these tricks to the Ming Dynasty, if other countries accidentally obtain these technologies from Daming in the future, it will definitely lead to a revolution in European agriculture.

Like the original Dutch in the history, didn't it have an "agricultural revolution" in the 17th century? The reason why the Dutch engaged in the "agricultural revolution" in the homeland is that after occupying the island, by thinking of the Han immigrants in Tainan, they learned a lot of oriental agricultural techniques and promoted the exhibition of Dutch agriculture ...

Of course, Taiwan now belongs to Marin. As for the Dutch, where is it cool to go ...

The Portuguese and Daming have a conflict ~ www.novelhall.com ~ and the capital that invaded Daming's younger brother, the Malacca Kingdom, just caused the dissatisfaction of Daming Junchen and was unable to make good contact with the Daming Dynasty for a long time. This period of time is the most precious for Marin. As long as you pass this time, you will make enough money ...

Moreover, the use of manure and plant ash in the Ming Dynasty was very mature, and he was not easy to say, but he should pay attention to the use of manure and plant ash.

However, if no phosphate fertilizer is applied, it will be exactly the same as the beginning of November from the fourth month of the seventh lunar month. At that time, it was already early winter, which was not conducive to the growth and development of crops.

Therefore, in order for the sweet potatoes to bear fruit smoothly, Marin must grasp. And the quickest way is to find a substitute for phosphate fertilizer. Otherwise, the growth is slow, and it is estimated that the Manchu dynasty ministers cannot see the harvest of sweet potatoes.

In the end, Marin finally thought of a way to get mud from the fish-rich river pond ...

In a river where fish live, after the fish dies, the bones must sink to the bottom of the river and melt into the mud. In this way, the silt at the bottom of a river with many fish must have a low phosphorus content. Although it is far less than the normal phosphate fertilizer, it is okay to get more. After all, the river mud is not like spending, it burns with more ...

So, Marin began to ask Liu Jin to ask Jinyiwei for help, which river in the capital had more fish. Then, send people to dig the river mud, as the phosphate fertilizer for the sweet potato in the three-point field on "one acre and three-point field". Although the phosphorus content is low, Kesheng has no side effects in the river mud.

At the same time, manure {treated} and plants and ash are also abundant. Anyway, they are all natural green fertilizers, so do n’t be afraid to use more. Unlike chemical fertilizers, it is easy to burn roots when used more ... 6

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