Draining fertilizer is actually not difficult, this period can easily do the high-temperature composting method, and the decay fermentation method, because the high-temperature composting method will pollute the air, in the densely populated Guanzhong is not suitable for use at all, so Sun Xiangfu just taught these children the corruption fermentation method.

The process is very simple, put animal or human feces in the dug bath, and add bellflower powder, sawdust, bran and other fermentation in a ratio of 100 to 1.

In summer, this traditional fermentation of the manure tank only needs more than ten days to be completely decomposed, the leached organic fertilizer is very convenient to apply, the smell is also small, and generally will not appear secondary fermentation, the phenomenon of burning roots and seedlings, applied once, it can benefit for many years, with the highest effect of chicken manure.

Of course, the most difficult thing to grasp is the proportion of this fertilizer, because no one weighs the weight of the manure, most of them are visually inspected, the fermented product is added too much or too little, and the fermented fertilizer has a certain difference, they are all children, and it is inevitable to lose things when doing things, like Zhao He, he sprinkled a handful of things in the pig manure tank he dug indiscriminately, and every time he ran to see the manure tank, he habitually sprinkled the boy's urine in the manure tank, and as a result, his pool of manure did not have Sun Deshou, Wang Erxiao They drained well.

But the learning atmosphere of Happy Village is relaxed and tolerant, and if you are wrong, you can come again, until you get it right, there are enough reserves in the village for them to experiment and play.

Since last year, Sun Xiangfu knew that this year's poultry and livestock feed reserves are abundant, and he told Sun Erli to organize manpower to dig swamp ponds to store fertilizer, more than half a year has passed, the biogas slurry and biogas residue in the major swamp ponds have reached a terrifying amount, once this year's locust plague passes, Sun Xiangfu can cultivate the land in Guanzhong, will use this high fertility thing as base fertilizer, according to the cultivation standards of later generations, planting a season of farmland.

"Your Majesty is here, meet Your Majesty······"

Seeing the emperor and his entourage coming this way, the children did not salute Li Shimin neatly at all, but Li Shimin did not blame them, and looked at Sun Deshou with a smile and said, "What kind of dish is the lettuce you just said?" Why haven't I heard of it? ”

"Well, lettuce is a vegetable that my eldest brother brought back from Lingnan, and it is also suitable for planting in Guanzhong in the summer, Wang Erxiao, Zhao He, and Ma Yu all three of them have planted it, you see."

Lettuce has a long history of planting, is a kind of vegetable that was fully popularized in the Central Plains in the middle of the Tang Dynasty, Sun Xiangfu saw this vegetable in Lingnan, thought that Chang'an didn't seem to have anyone planted, so he got some seeds back, this year is the first batch of planting in Chang'an, of course, as Zhao Long runs more frequently in Central and South Asia, more vegetable plant seeds will be collected by him to Chang'an.

Li Shimin looked into the vegetable field in the direction of Sun Deshou's guidance, and saw green vegetables neatly arranged in the field, on the dry mud, and the traces of water they had just watered with a kettle.

"You kids grow these vegetables?"

Not only lettuce, but also many other crops are neatly arranged in the field, not professional farming, really not recognizable, although the weather is dry at this time, there are many locusts, but the vegetables here are very gratifying, obviously there are people taking care of them all day long.

"Yes, this is my schoolwork for the children of the peasant sect."

"Schoolwork?"

Li Shimin was a little surprised, he found that he only knew about this peasant sect with a copy of "Qi Min Yao Shu", but he never thought that the peasant gate actually had its own unique education system, and their inheritance was not just to read that book, but to actually do it.

"Isn't what you are learning recorded in the "Qi Min Yao Shu"?" Li Shimin continued to ask.

"Well, my eldest brother said that what is recorded in "Qi Min Yaoshu" is only the foundation, it is the knowledge studied by the first generation of ancestors, and our peasant descendants must create more advanced farming and breeding technology from generation to generation, oh, advanced, it means better and more intelligent.

And my eldest brother is the fourth generation, and there have been two generations of ancestors before him whose knowledge has surpassed that of the ancestors, and the knowledge he has mastered is at least three generations more than recorded in the "Qi Min Yaoshu", which is much more sophisticated, and our task is to surpass my eldest brother and strive to become the successor of the next generation. Sun Deshou explained according to the lie that Sun Xiangfu had made up before.

"The inheritance of this peasant gate turned out to be like this."

Not only Li Shimin, Xiao Yu and Fang Xuanling and others were very surprised, the ancients had more respect for the knowledge left by their predecessors, for fear that there would be mistakes and omissions in the inheritance, the reason why the ancient books are so precious, in addition to the few, but also because the above records are the most primitive knowledge, like the agricultural sect, which specializes in overthrowing the education of the predecessors, has never appeared.

"Hehe, my eldest brother also said that in fact, not only the technology of cultivation and breeding, but also any other technology, should continue to seek breakthroughs and progress on the basis of predecessors, so that human civilization will make rapid progress and no longer do a lot of stupid things because of ignorance."

After all, Sun Deshou is still a child, he has no scheming, how Sun Xiangfu told him, he said it, but this aroused the interest of Li Shimin and several people.

"Your eldest brother thinks a lot of people in this world are doing stupid things?" Li Shimin took over the words trickily.

"Yes! My eldest brother said that those who rebel are very stupid, whether they succeed or not, they are not three meals a day, birth, old age, sickness and death, what are they trying to do? Vanity is just a very low-level emotion, and those who are swayed by this low-level emotion are fools who have not yet lived to understand. ”

Li Shimin agrees with Sun Deshou's words, people who do not have the political ambition to lead the people of the world to live a good life, and rebel only because of their own greed, are indeed very stupid, but can the progress of civilization he said reduce the birth of such fools?

This is a question worth thinking about by Li Shimin, just like before he suddenly felt that he should do all the preparatory work in front, it is a direction he will work hard in the future.

"You said earlier that your eldest brother's farming skills have surpassed many of the records in "Qi Min Yaoshu", so can he now plant several times the yield of one acre of land?" Li Shimin asked a question that everyone was interested in.

Sun Deshou thought for a while, nodded and replied, "Theoretically, last year, the eldest brother increased the yield of wheat to a little more than four stones without leaching organic fertilizer, and this year, with organic fertilizer, the yield may increase by a few percent, which is two or three times higher than the original yield of more than two stones." ”

It is not difficult for the yield of wheat per mu to reach more than 1,000 catties in later generations, that is, more than eight stones, even if now because of seeds, fertility, pesticides, can not fully reach the yield of later generations, but it is not impossible to produce six or seven stones per mu, don't forget, the ecological environment of this period is very good, there is basically no pollution, the sunshine is very sufficient, as long as the fertility in the field is sufficient, the planting method is scientific, the growth of crops may not be worse than that of later generations.

"What do you mean by theoretically?" Li Shimin asked again.

"That is, in the case of all aspects of preparation to do the best, just like the winter melon planted in the experimental field of the boy, almost meets the best conditions for the growth of winter melon, if you plant an acre of land according to this condition, the yield may reach more than 10,000 catties." Sun Deshou pointed to a few winter melons in the area where his name was inserted.

The people of the Central Plains learned to plant winter melons very early, and there are records of planting winter melons on the "Qi Min Technique", however, with the help of organic fertilizer and pollination, the winter melons in the experimental field will be much larger than the winter melons planted by ordinary farmers.

"Winter melon with a yield of 10,000 catties per mu?"

Li Shimin and several ministers were a little stunned, the winter melon is big, but in this period, the winter melon that can exceed ten catties is already considered a big one, and the fertility and water required for the growth of the winter melon are particularly large, so that few people plant a large area of winter melon fields, and it is possible to achieve a yield of two or three thousand catties per mu, but the yield of ten thousand catties per mu is not one or two times, it is more than five times the output.

They don't know that last year, in the greenhouse of Happy Village, there were many winter melons weighing more than 50 catties, and in later generations, there are usually winter melons that grow to the point that an adult can't hold them, and winter melons of more than 100 catties abound, and even super large winter melons that grow to more than 200 catties, and it is not difficult to produce 10,000 catties per mu.

"Well, plants are usually simpler than animals, understand its growth habits, meet its growth conditions, you can make it grow very well, we are now planting these experimental fields, in order to better understand the habits of crops, and then, do some excellent breeding or variants, looking for some breakthrough possibilities."

All right! Speaking more professionally, Li Shimin and others don't understand it even more, but no matter what, after turning around in Happy Village today, Li Shimin has a deeper understanding of the farm.

The country is people-oriented, the people take food as the sky, and the farmer can solve the problem of food for the people very well, so his importance is self-evident, he now has more expectations for this school, and the list of these children will be recorded by the secret guards, and when they grow up, Li Shimin is likely to use them greatly.

After visiting the children's experimental field like a stranger, Li Shimin saw Sun Dali, who was brought out of Chang'an Prison by the guards, because Li Shimin had no intention of embarrassing him, so he lived quite comfortably in the prison, and he still has the identity of the steward of Huangzhuang, in a sense, he is also Li Shimin's retainer, but he has not yet entered the rank.

"Sun Dali, if something happens to Sun Zhengming, can you continue to run this village as it is now?"

"Well, back to Your Majesty, this, the villain didn't think about it." It was the first time for Sun Dali to see the emperor at such a close distance, and he scratched his scalp a little crampedly.

"Everything is fine here, I like it very much, so I don't care what you do? I hope it continues to go on as it is now, and bring more miracles to my Datang. ”

"Well, what you said is true? No matter what? ”

"You don't joke."

"In this case, the villain wants to entrust the government to help buy the locusts in the land of Guanzhong, a penny and a catty, how much does it take, and our happy village has money to buy, I don't know if Your Majesty can help the villain?"

Because Sun Xiangfu often prefronted the emperor in front of Sun Dali, Sun Dali's awe of the emperor was not as thick as that of other people, so he made some bold mentions.

The purchase of locusts was explained to him by Sun Xiangfu earlier, but not long after the locust plague broke out, he was arrested by the government and put in prison, but the matter was delayed, and now as soon as he was released, his first thought was to complete the things assigned by Sun Xiangfu.

"Locusts, a penny a pound? What do you want so many locusts for? After saying this, he suddenly thought of the three locust steamed cakes he had eaten earlier, and now, half a day has passed, and he has no feeling of muscle hunger.

Locust powder is high in protein and has enough calories, and the calories of three steamed cakes are much higher than several bowls of coarse grain rice, which can naturally supply Li Shimin's consumption, in fact, this thing should be eaten by laborers engaged in heavy physical work in order to make the best use of it.

"I agree to this, but the locust cakes produced in your village can only be used for relief to the victims."

The imperial court is responsible for collecting locusts, and Xingfu Village pays for it, and the locusts collected can only be used to give free relief to the victims, Sun Erli doesn't know what kind of logic Li Shimin has, is this to ask Xingfu Village to pay for nothing to help the court solve the problem?

It should be, but with such conditions, Sun Erli didn't even think about it, so he happily agreed.