Yang Quan listened to Song Kuanzhi's words and laughed, "I know what you said, but those people can't cultivate it, if I come to plant, there is no problem with this crop yielding about 400 catties per mu in one season, even if we plant soybeans now, I can also let him produce 200 catties,"

Yang Quan said this, looking at what Song Kuanzhi wanted to say, waved his hand and said, "I know, Mr. Song, I have a bottom in my heart, you can rest assured,"

Song Kuanzhi saw that Yang Quan said this, and he didn't know what to say, so he had to shake his head and walk out of the house. Pen, fun, and www.biquge.info

Yang Quan touched the golden grains on the table, with a smile hidden in his eyes, he asked Song Kuanzhi to find this thing, it is nothing else, it is the most common corn in the land of China in later generations, when this thing was introduced to China, it is not written in the history books, but according to some Ming notes, it should have been introduced in the Wanli period, corn and sweet potatoes, which is the foundation of the so-called Kangqian prosperous era in later generations - nothing can hold the high yield of these two crops, such as sweet potatoes, the yield of thousands of catties at every turn, One acre of corn can also produce five or six hundred catties,

You must know that this is no chemical fertilizer and no pesticides in ancient times, the low grain yield at that time is a comparison, to put it mildly, the grain grown in the wasteland of modern society is higher than that era, not to mention the low yield of miscellaneous grains, take wheat as an example, the low yield of that era is scary. At that time, the land was relatively rich in the three places of Shun in the south of Beizhili, and the yield of wheat in one acre of land could not even reach one hundred catties, and the lowest was only sixty or seventy catties, so we look at the ancient literature, the ancients had a family of five and divided five or six acres of land, basically they were poor peasants, and it was difficult to support their families, and in modern society, five or six acres of land were considered to be more land at home.

The specific yield per mu of grain in the Ming Dynasty has been verified that the result of the weighted average yield per mu in the north and south of the Ming Dynasty is 2.31 Ming stone raw grain, and one stone in the Ming Dynasty is equivalent to 1.0225 stone now, that is, about 2.362 stone per mu. According to the calculation of 134 city jin of raw grain in each city, the average production of raw grain per mu is 316.5 city jin. One mu in the Ming Dynasty is equivalent to 0.9216 mu now, and the yield per mu in the Ming Dynasty is 343.424 city catties per mu on average. But this data can only be used in the early Ming Dynasty!

You must know that in any feudal dynasty, in the early days, the land resources were abundant, and the people's fields had many good fields, so the land yield was naturally high, and it could also solve the problem of people's food and clothing, so that it was the country and the people, but in the later period of the dynasty, the fertile land was ripe, and it had been mostly annexed by the gentry and magnatesHow high can the yield be in such a field? Moreover, because the gentry and magnates occupy a lot of land, then this part of the hidden and disappeared land and tax and forced labor will have to be all on the ordinary people, and the people will not be able to serve the labor on weekdays, where will they have time to manage the land? As a result, the yield of the field will inevitably be lower.

The specific yield of wheat per mu in the Ming Dynasty, because of the age, just looking at the literature, sometimes what you get is not necessarily true, but Yang Quan heard what his grandfather said when he was a child, but it can be used as a corroboration, when the production team, because the national industrial capacity was too low at that time, there was no chemical fertilizer available at all, the yield of wheat per mu was about 270 catties, and the yield of corn was slightly higher, and the yield per mu was about 400 to 500 catties, and after the introduction of chemical fertilizers in seven years, the wheat yield exceeded 600 catties in one fell swoop, and corn reached modern times, It is not uncommon to have a yield of 1,400 catties per mu. It can be seen that chemical fertilizers have a huge impact on food production.

Yang Quan asked Song Kuanzhi to find corn, that is, he wanted to rely on his half-baked agricultural knowledge (in school, Yang Quan is only busy playing games and skipping classes, if you really want to say that he is a half-hanger, he is a little promoted. Yang Quan didn't believe it, he couldn't make this field a frightening high yield!

Without chemical fertilizer, of course Yang Quan can't make it, because this requires the entire perfect industrial system to support, even if it is the emperor today, it is not just a matter of mouth, but Yang Quan has another way, that is, when he was in school, he listened to the lessons of the old professor who taught them plant nutrition, and inadvertently wrote it down, this method is simple to prepare, and the items required are all raw materials that are easily available around. This kind of chemical fertilizer, applied to the soil, is not inferior to chemical fertilizer, but it is longer than the fertilizer effect of chemical fertilizer, and can avoid soil compaction caused by chemical fertilizer and improve the soil structure.

For example, when he planted the land a few days ago, he used manure mixed with plaster to make things, which is equivalent to the potency of ammonium sulfate, the soil of the Ming Dynasty, and even the crops that grow, he looked at it carefully, and the others are fine, but the lack of nitrogen fertilizer and phosphate fertilizer, the plant straw is weak and yellow, how can such a soil have a high yield? Nitrogen fertilizer has been replenished, and there is a shortage of phosphate fertilizer raw materials, but it cannot be made up for the time being, so we can only find a way to use it temporarily. The best way is to apply it deeply when planting in the autumn and ploughing the ground. It will only improve after several years of continuous use.

The more Yang Quan thinks about it, the brighter his eyes become, if he continues to do it like him, next spring, in these soybean-planted land, stubble planted sweet potatoes, tsk, the yield of sweet potatoes is much higher than these things, but unfortunately, the bean seeds in his hand are still too few, if there are more seeds, using the nitrogen fixation capacity of soybean nodules, the nitrogen content of these soils will definitely rise slowly. At that time, it will probably not be a problem to double the grain production.

Yang Quan, who was excited, stood up from the chair excitedly, and when there was a sharp pain in his thigh wound, he woke up, he was still injured, he smiled bitterly, and slowly walked towards his room.

Pushing open the heavy wooden door, Qi Zimo was sitting on the edge of the bed, his head down, not knowing what he was thinking. Yang Quan looked at her appearance, and couldn't help but have a narrow mind in his heart, and quietly walked to Qi Zimo's side, and shouted while Qi Zimo was not paying attention.

"Ah" Qi Zimo let out a soft cry, and then a dagger with cold light was pressed against Yang Quan's throat.

This time, Yang Quan was frightened, and he hurriedly shouted at Qi Zimo, "Zimo, don't do it, it's me."

"Hmph, I already knew it was you, and I wanted to scare me, so I'll give you a sentence today, when I have a lot of flaws, the other party doesn't notice anything, and the reasons are three, first, this person is dead, second, this person has long been on guard, and third, this is a trap."

(To be continued.) )