"Tell me, how did you get the greenhouse? Is it just to build a shed in the field? While walking, Li Shimin asked.

"The so-called greenhouse, as the name suggests, is to build a huge shed in the field, mainly for growing vegetables in other seasons in winter.

To put it bluntly, it is worthless, to build a shed is to keep warm, there is a stove to boil water to provide temperature, and the top is covered with a white cloth so that the sun can shine, that is, people should pay attention to the temperature can not be too high, and any other people will farm, which does not distinguish between people. Feng Dewen explained.

"Oh, that's the case, in the future, the people of Datang will be able to grow some vegetables in winter, which is really good." Li Shimin said happily.

"Erchen has always believed that agriculture is the foundation of the country, this sentence is very correct, and he has always hoped to contribute to this aspect, so that thousands of years later, the people will also remember the achievements of the minister, and look forward to the day when the historian can write that Feng Daiwen of the Tang Dynasty will make new food, so that the people of the world will not have hunger worries in the future." Feng Daiwen walked and said to Li Shimin.

"Haha, I also look forward to the day when Datang will definitely surpass Qin and Han." Feng Daiwen's words made Li Shimin's heart bloom, especially when he proposed that his credit was Zhenguannian, so wouldn't he, the emperor, have more credit.

"The Tang Dynasty passed through the emperor's grandfather, and the two generations of Ming monarchs of the father and emperor were lightly conscripted and reduced taxes, which are far from being comparable to the Qin and Han dynasties, even if the military is now the Tang Dynasty is not inferior to the Qin and Han dynasties." Feng Daiwen slapped another sycophant, which simply disturbed Li Shimin's itching and made him very satisfied.

"Yes, agriculture is the foundation of the country, no agriculture is unstable, no business is not rich, no work is not strong, this is what you said about the country, I have seen good results, I hope to go further, make Datang stronger." Li Shimin sighed.

"I will definitely not disappoint my father, and in two or three years at most, my sons and ministers will be able to increase the grain of the Tang Dynasty by 30%." Feng Daiwen said in a firm tone.

"Oh, what's the solution, sit down and tell me in detail." Entering the main hall, it was much warmer, Li Shimin beckoned everyone to sit down, and asked the attendant to cut the cold melon and distribute it to everyone, and then asked.

"When Erchen was in Lingnan, he built an experimental field, and every time he chose the largest and fullest seed to plant, so many years, now the yield of rice can increase by 10% compared with the same.

But it has basically come to an end, and the next step is to hybridize, plant different varieties of rice in different places together, and improve their varieties through artificial pollination. Feng Daiwen explained carefully.

The person who made the living note next to him had already splashed ink and began to record, this kind of record is generally the material for writing the official history, if the conversation is important and the history book records are more, if it is not important, it may be a sentence "A certain year, a certain month, a certain day, Taizong asked Ce'anxi, Feng Daiwen." ”

"Why hybridization? What is artificial pollination? What is the principle of this. Li Shimin asked puzzled.

Feng Daiwen patted his head and thought about it and said: "These animals and plants are the same as people, many of them need to be mated in order to have a future, and the difference between plants and humans is that through multiple hybridizations, better varieties can be obtained."

As for artificial pollination, it is to shake off the powder inside the flowers and brush them on the top of the flowers at the top of the fruit with a brush. ”

"I see, that's why you asked for the seeds to be collected from all over the place?" Li Shimin did not doubt Feng Daiwen's words, after all, he had not been disappointed in what he had done.

"Yes, not only grain, but also fruits, plant them all, and then pick out the ones with high yields and good tastes, and by grafting, you can make all the fruit trees taste good." Feng Dawen continued.

"What is grafting?" They have never heard many of the words Feng Daiwen said today, and they don't know the meaning, which makes Li Yuan feel that he has lived to a dog for more than 60 years, which is very bad, but he has to ask, and if he doesn't ask clearly, it is even more uncomfortable to hold it in his heart.

"The so-called grafting is to cut off all the trunks and branches of bad fruit trees when the spring is warm, take a cut of the old branches of the fruit trees, insert them in the fractures, wrap them in cloth, and new shoots will grow in the future instead of the branches, and the fruits will be delicious." Feng Daiwen explained for a long time, and a few people understood.

"How else?" Li Shimin was shocked and said in a lost voice.

"It is indeed so, in fact, the fruit tree is also a science, you can't let it open too high, the extra branches must be pruned off, otherwise it will affect the fruit, father, you think that if the fruit tree continues to grow taller, then the fruit will not be too much, because the nutrient absorption is only so much, it is used to grow taller, and the other years will inevitably be worse." Feng Daiwen said with certainty.

"Yes, then I'll understand." Li Shimin suddenly realized and nodded and said.

"After the fruit trees are planted, they only need a little time to take care of them every year, and the people plant the fruit trees, and after the fruits, there are naturally merchants who go to buy them and use them to make canned food, and the local people will also consume a part of it, so that the people will not only have an extra income, but also have one more kind of food." Feng Dawen continued.

"Yes, the fruit trees don't need to be in a good place, just in the mountains, and the fertile land will not reduce the yield if it is intensively cultivated." Li Shimin was thorough at one point, applauded and agreed.

"My father is wise, and he can also intercrop, and he can also grow some vegetables between fruit trees, as long as he takes care of it carefully, it will not affect the yield." Feng Daiwen has always admired Li Shimin, many things are clear at one point, and he can think of more.

"Excellent! You are at ease experimenting in Liaoxi, and I am looking forward to the results as soon as possible, so if you need anything, just ask, I will send 5,000 elite soldiers for you to drive. Li Shimin said excitedly.

"Erchen understands!" Feng Dawen replied.

At this time, the hot pot was also made in the imperial dining room, and the whole family did not see each other, sitting around a large table and eating and talking.

Li Shimin took the third entrance examination of Li Chengqian's brother respectively, and found that the three of them had different growth, and he couldn't help but be very satisfied.

Next, Feng Daiwen explained in detail for Li Shimin that he started from Chang'an to the later administration, including the appointment of the children of the family, the dismissal of Pingzhou County Guard, and everything was explained in detail.

"Well, the mountain people have been handling the matter all along, but unfortunately there are not many ways, you have handled it well, and I will let other places learn how to deal with you." Li Shimin listened to Feng Daiwen's explanation and nodded his head constantly, saying that he was very good, and did not say anything to interfere in any matter, and finally spoke.

Feng Daiwen took out a box from his arms and said: "This is the Baishan ginseng that Erchen said, although it does not have the effect of reviving the dead, but it is a good medicine for prolonging life." ”

Li Yuan glanced at it, and said with a pout: "Boy, you are in the hands of the Khitans, I often eat this thing, although it is a good tonic, but it is not as magical as you say." ”

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