Chen Yujie was still a little hesitant......

After all, he has always followed his uncle, although Xiong Tingbi gave him the opportunity to be an official, but in fact, he also knew that as long as he followed his uncle, he would still be able to mix an official and a half-job after all.

Of course, that's his own business.

The two went out into the street together.

At this time, the flood of victims was still pouring in, and the continuous heavy rain in the past few days has caused flooding to varying degrees in various parts of Suncheon. In fact, this place has always been like this, because it is located in the common drainage channel of the Taihang Mountains and the Yanshan Mountain Range, whether it is west or north, the floodwaters flowing from the mountains converge here. When the Liao State was in the south of Tongzhou, the circumference of Yanfangdian was hundreds of miles, even the current Nanyuan was inexhaustible at four times, like an ocean, and this kind of place was almost standard for this flood in summer. And these influx of victims, so that the prosperity of the capital instantly changed, the streets are full of families with mouths, crying and begging for alms, although Wanli quickly ordered the establishment of a porridge factory, but obviously can not change anything......

Everyone understands the government soup kitchen.

The emperor took out 10,000 taels, and estimated that only 1,000 taels were really used on the victims, not to mention that the price of rice was also skyrocketing.

"Do you know sweet potatoes?"

Yang Xin asked Chen Yujie.

"My uncle tried to plant in Jiangnan, but it was not popular with the people, Jiangnan is not short of food, people who are used to eating rice don't like to eat this at all, not to mention that Jiangnan doesn't even like to plant rice now, mulberry cotton is the most sought after, and rice is bought from Huguang Jiangxi.

Who still grows sweet potatoes?

In the north, we are currently trying to grow in Tianjin, but we have not yet figured out how to preserve it, this thing is most afraid of freezing, and it will rot and be inedible when it freezes. ”

Chen Yujie said very directly.

Then Yang Xin looked at him with a very strange look......

"Brother Yang?"

Chen Yujie said blankly.

"Won't you dig a pit and bury it?"

Yang Xin said speechlessly.

He didn't expect such a simple question to stump the famous Xu Guangqi.

"Brother Yang can solve the winter storage?"

Chen Yujie said in surprise.

"That's the easiest, dig a pit, dry and waterless but damp, and then spread sand to bury that thing inside, insert something on it for ventilation, and then don't care about it anymore, if there is a fire kang at home, it's perfect, just pile it in it, why don't you last a winter?"

Yang Xin said.

"Let's go, find my uncle!"

Chen Yujie said without hesitation.

In fact, Xu Guangqi really didn't solve the problem of this winter storage, but as soon as Yang Xin said it, he instantly understood with the old man's mind.

"How much do you still know?"

Xu Guangqi asked very politely.

"Ask!"

Yang Xin also sat down on the Taishi chair very unceremoniously, picked up the teacup and said.

"The winter storage has understood, but there is still a trouble, this thing needs to be warm for germination, and it can only be planted with other crops in spring, but its growth period is too long, and other crops have been harvested This thing can not be harvested. As a result, the sowing of wheat in winter was delayed, so that only one season could be planted a year, so that it was useless to increase its yield. ”

Xu Guangqi said.

"It's simple, make a seedbed similar to a fire kang, arrange the seed potatoes on it, cover the soil and burn the fire under the fire to control the heat to make it germinate early, and then cut it and plant the seedlings after the wheat is cut."

Yang Xin said.

This is the standard practice of raising seedlings before there is no plastic film in the north, and the Shandong Peninsula does so.

"Aren't you afraid of being roasted?"

Chen Yujie was stunned.

"I don't bother to answer such elementary questions!"

Yang Xin said very badly.

"This matter is not difficult, experienced farmers can ensure it by trying it by hand, and this kind of seedling raising must be experimented, try for a period of time to understand, this can indeed ensure that it is staggered with wheat, harvest wheat and plant sweet potatoes, harvest sweet potatoes and plant wheat, and the northern dry fields can also be harvested twice a year, if this method can be done, Yang Xiaoyou will be famous through the ages!"

Xu Guangqi said.

Yang Xin continued to drink tea with a bowl and pretended to be a master.

"Also, people don't like to eat it, which is also a problem."

Xu Guangqi said.

"This roasted sweet potato, or sweet potato, is indeed too acidic after eating too much, but we can solve it in another way, such as winemaking, how much food does Daming waste in a year of winemaking? After His Majesty issued a holy decree, he was only allowed to drink sweet potatoes and burn them, wouldn't it solve the use of sweet potatoes? In addition, we can make vermicelli, flour skin, and even sweet potato pancakes, especially sweet potato pancakes, which not only solve the problem of stomach acid, but also are resistant to storage. Even if it is cooked, cut sweet potato dried sweet potato strips and sold them as snacks, it is still very good, for example, I like to make sweet potato strips in winter and roast them on the fire. ”

Yang Xin said.

Chen Yujie's face was speechless.

That means you've eaten it! Anyway, we have been experimenting in Tianjin in the whole north so far, where do you go to eat as a so-called Hejian person?

"I know how to make wine, but I don't know much about the rest!"

Xu Guangqi said.

"How many sweet potatoes have you planted in Tianjin?"

Yang Xin asked.

"It's not too much, it's only 100 acres, just in some thin land."

Chen Yujie said.

"Do you still have sweet potatoes?"

Yang Xin asked.

"Not yet!"

Chen Yujie said.

"Then wait for the harvest, you are responsible for the investment, buy a small yard, recruit some workers, and then when the potatoes are harvested, I will teach them how to make all kinds of products. Especially the vermicelli and vermicelli, I can guarantee that they will be popular, and you can also make snacks with sweet potatoes, which can also be sold, in short, we can use them to make money. Xu Gong, the promotion of the government has no effect, and even if there is, it is very slow, but if our sweet potatoes can make money, then there will be people who will follow suit without the promotion of the government, so that your sweet potatoes will still be promoted, and we can also take the opportunity to make a small fortune. ”

Yang Xin said.

He wouldn't actually do that.

However, first of all, these foods have long been available at this time, and they have long been popular among the people, and the rest is nothing more than changing to sweet potatoes.

Sweet potato noodles are not required.

These are the sweet potatoes directly cut and ground out of the pulp, the rest is filtered, and finally the pure starch paste is added to the alum, which is nothing more than such a procedure, and the rest is the traditional vermicelli making method. This is not to make money, but to promote sweet potatoes, in the short term, there is only Xu Guangqi's real estate sweet potatoes in Tianjin, and they will monopolize this industry. The traditional vermicelli is made of mung beans and the like, and the cost of this thing cannot be compared with sweet potato vermicelli, even if the low-cost sweet potato vermicelli is cheaper, it will also sell well, as long as it makes money, someone will naturally join the industry.

In feudal times, the government was the least efficient at promoting new crops.

But once this new crop becomes a lucrative business, it spreads like a flood of banks.

Then Xu Guangqi can also sell seed potatoes.

Technical advice can also be provided, of course, for a fee.

In short, this wealth will be fine within three or five years, and after three or five years, sweet potatoes will begin to flood.

"It's worth a try!"

Xu Guangqi said with a smile.

"What's more, by the way, corn is also available at this time, right?"

Yang Xin asked.

"Yes, it's also called Yumai."

Xu Guangqi said.

The name corn was first seen in ancient Chinese books, in fact, it was his later agricultural administration book, but in a famous novel, cornmeal tortillas also appeared, so this name should be commonly used in the north, but Xu Guangqi investigated other names, and he himself said that it was because of the different sources of introduction.

"However, the yield of this product is very low, and it is not the same as sweet potato, which is the benefit of drought tolerance!"

He said.

"That's a pollination problem."

Yang Xin said.

"Plant seeds are similar to human children, male and female must be matched to produce seeds that can reproduce, without male and female matching, it is impossible to produce qualified seeds, corn male and female are on the same plant, the top ones are male flowers, and the lower whiskers are female flowers. The corn we plant comes from natural pollination, and the pollen on the top falls on the female flowers below to have corn seeds, but this pollination process is very difficult to guarantee, insufficient pollination is unable to produce corn, and in the end it can only pollinate how many grains to bear. Therefore, it is enough to help manually, shake the male flowers more when they bloom, or take a brush to dip the male flowers with pollen for the female flowers. If you feel that the yield is not high enough, cut off a male flower every other tree, this thing has a lot of pollen, and consumes a lot of nutrients, and the nutrients of the male flower are all given to the female flower naturally produce more. ”

He went on to say.

The question is high-end and beyond his scientific level.

Hybridization was king, but he couldn't play with it, and there weren't that many lines, in fact, modern corn hybrids didn't come together until the nineteenth century.

However, assisted pollination plus emasculation will definitely increase yields.

"Pollination? Male flowers, female flowers? ”

Xu Guangqi said suspiciously.

"Xu Gong, this problem is very complicated, this involves a systematic science, it will be difficult to explain clearly for a while, even if it is compiled into a book, it must be comparable to the Yongle Canon, if you want to study, it is estimated that you don't want to really study it thoroughly in your lifetime, of course, if you really have this perseverance, I recommend you to make an instrument, then you should know the telescope, right? Two lenses are superimposed to see something in the distance. ”

Yang Xin said.

"Male Mano mentioned that Galileo observed the stars, but there was no physical object."

Xu Guangqi said.

"Okay, you find a good crystal craftsman, find a few more good crystals, and find another coppersmith, and it is obvious that I can offer treasures to His Majesty again."

Yang Xin said.

He didn't expect Daming to have a real telescope.

But this is also normal, although the Dutch have invented this a long time ago, but there was a technical blockade, and it was not until ten years ago that Galileo made it himself, ten years later, tens of thousands of miles away, the Ming Dynasty, to be able to know that there is such a thing is already closely following the trend. And this is undoubtedly a good thing for him, he can manufacture it in large quantities and then apply it on the battlefield, whether it can be useful or not, at least it is very beneficial to him at present, and he can also make an original version of the microscope by the way, so that Xu Guangqi can see the true face of plants.

Fifty years later, Leeuwenhoek sounded the clarion call for modern biology with a microscope

(Thanks to the book friend Camellia Noodles, backup59, Xuanyuan noble ancestor Shu Yao Shun, I am Cao Mu Ma, God made the new Ming Protector of the country and the public card is full of rewards from others).