"Finally, be careful not to interfere with the work in the field. In the first month and February, mulberry trees are managed and fish fry are stocked; fertilize mulberry trees in March and April; Silkworms are raised in May and sold in June, and silkworm pupae are used to feed fish; In July and August, the fish pond was dredged, and the pond foundation was fixed with pond mud; At the end of the months weeding and feeding the fish. It is necessary to arrange the agricultural time well and make more use of the idle time in the agricultural area, so that there will be no delay at the same time. ”

Ma Yilong spoke for most of the hour, and then waved his hand a little tiredly: "Let's get out of class." ”

The students bowed respectfully and retreated, and the little boy hurriedly brought the old gentleman a tea bowl. Ma Yilong squinted at Zhao Hao while drinking water and said, "Do you still know how to come?" I've been bringing the old man here for more than a year, and I'm seeing you for the first time. ”

"Sorry, sorry, too busy." Zhao Hao hurriedly laughed and said, "Didn't I write you several letters, and asked you to give a lecture at Yufeng Academy?" Seeing that you can't get old, I won't hurry over. ”

"Hmph, the old man doesn't have those idle hours." Ma Yilong snorted. "I don't understand, is your Yufeng Academy teaching science or teaching scientific examinations?"

"Metropolitan education, comprehensive university." The thickness of Zhao Hao's face is beyond doubt.

"Hmph, you can't do that." Ma Yilong snorted again, threw the tea residue in the tea bowl to the ground, and threw it to Xiao Tong and said: "In the hearts of many people, your set of science is a trick and ingenious, how many of those students really want to learn science?" It's not all for the name of your five-jinshi. ”

"It's heart-wrenching, uncle." Zhao Hao smiled bitterly and did not deny it.

"Just prick your heart. You see, my original group of students, once they were chosen, they all went to your academy, and only four remained, and two of them were still in the examination. Ma Yilong still said with a grudge: "You expect such a group of impure motives to study science, that is also to be blind." ”

"Take your time, there are those who are willing to study." Zhao Hao snorted and didn't argue with Ma Yilong. Of course, it is not easy to change the social atmosphere and set off a scientific upsurge, so it is all the more necessary to cultivate readers, compete for the right to speak in society, and give science a good environment for growth.

"You're too infocused......" Ma Yilong only complained, he was also a high-ranking official in the imperial court and was persecuted by the Yan Party, how could he not know Zhao Hao's intentions?

"Alas, there is no way, there are too many things, and I can't calm down." Zhao Hao admitted this and said with a smile: "After a few years, all aspects have been arranged, and I will also learn from Mr., ignore the things outside the window, and devote myself to scientific research." ”

"The old man can't wait for that day." Ma Yilong sighed, he is already in his seventies? Feeling that time is running out? That's why you're in a hurry to teach students? I want to pass on the agronomic knowledge I have accumulated as much as possible.

"No, Dr. Wan is the same age as you, you follow him to maintain your health, and you are sure to live a long life." Zhao Hao interrupted and laughed: "My grandfather is only one year younger than you?" also went to Guangzhou to find a sexy ...... Oh no, go on a tour. ”

"Hahaha, okay? Inherit your good words. Ma Yilong made him smile and said: "Life is rare for seventy years, and the old man is not afraid of death." It was you kid who made the old man feel strongly that he didn't have enough time and couldn't figure out how to farm scientifically? I can't even die. ”

"Will it? Definitely. Zhao Hao nodded heavily.

"Huh? I think so too. This year, with your help, the old man has achieved more results than in the previous ten years! Ma Yilong didn't care whether his hands were dirty or not, he patted Zhao Hao's shoulder heavily and said, "Maybe you can really rely on us?" Let everyone have food to eat, and everyone has clothes to wear, which is something that the ancient sages could not do. Is that really the case? Our merits are immeasurable! ”

"Oh, what's going on?" Zhao Hao didn't care about the sore shoulder, and asked with a glint in his eyes.

"Let's go, I'll show you." Ma Yilong pulled him and walked towards a small courtyard with a red brick wall in the corner of the campus.

A foul smell was smelled from afar, and many visitors couldn't help but cover their noses.

"Why does it stink?" Wang Heng asked angrily, "Are you stewing?" ”

"Doll remember, without this smell, there is no smell of food." Ma Yilong was accustomed to it, and even took a deep breath, that perverted appearance made Zhao Hao think of Pan Zhongcheng.

Sister Ma took out the mask from her briefcase, as a super peerless secretary, of course, she must be able to deal with all kinds of emergencies.

It's a pity that she only brought two masks, and after thinking about it, she reluctantly put them on for Wang Heng and Xu Guangqi. Otherwise, adults don't wear children, and the picture is too ugly.

Fortunately, Zhao Gongzi took pity on the fragrance and let her wait outside, and he walked in fearlessly with the two apprentices without wearing a mask.

Damn, it stinks......

It really made Wang Heng speak. I saw two rows of stoves coiled under the reed shed in the yard. The trainees poured a basket of cow and horse manure into a large iron pot and boiled it with water.

I can't describe the smell......

The students all covered their mouths and noses with cloths, and they still stinked and wanted to die. Zhao Gongzi even vomited out all the overnight meals directly......

At this time, Shi Jizhi asked someone to send a mask and quickly put it on for Zhao Gongzi, and he came back to life.

Ma Yilong didn't notice it, and introduced with a fluttering eyebrow: "The growth of crops depends on fertilizer, but the fertility of natural fertilizer is limited, and the amount required is too large." One acre of land has to be hundreds of catties of fertilizer, and with the expansion of farm land, there is simply no shortage of supply. Fortunately, you told me the formula of high-efficiency fertilizer, I tried it last year, and the effect was really good! ”

Zhao Hao came back to his senses at this time, it turned out that this was making 'Feitian Powder'.

Fertile field powder is a kind of soil fertilizer that has been configured four hundred years later. Use 100 catties of livestock pen fertilizer, add 60 catties of river water or pond water and put it in a large iron pot, boil for 40 minutes and extract the fat juice. Then add 4 catties of alum, 6 catties of soil nitrate, 4 catties of gypsum, 8 taels of red letter to the pot, heat for 1 hour, boil into a paste and pour it into the basin, cool and dry it by natural ventilation, that is, it becomes an efficient farmhouse fertilizer containing nitrogen, phosphorus and potassium, and the nitrogen content is very high.

If you replace livestock manure with human manure, the fertilizer effect will last longer......

"When the fertilizer powder is used in the ground, it will be effective in seven days. The leaves are black and shiny, and the ears are much fuller. But water it right away, or it will burn the crops. Ma Yilong was very satisfied, and he whispered to Zhao Hao: "Last year, I planted a crop of late rice with fertilizer flour, do you guess what the harvest is?" ”

"How much?" Zhao Hao asked.

"Seven stones." Ma Yilong lowered his voice, lest he cause a commotion.

"How many stones?" Zhao Hao's eyes widened, his voice suddenly raised, and he took off his mask.

Ma Yilong made a seven.

"I'm a good girl!" Zhao Hao was so shocked that he couldn't close his mouth, he finally understood why Mr. Meng He didn't think it smelled.

Last year, the top and bottom of Kunkaisi Farm exerted their strength to eat milk and planted a yield of three stones and five per mu, which had already shocked Jiangnan, so that all counties bowed their heads and begged the eldest brother to bring ......

Mr. Meng He was able to double on the basis of last year, this, how much does this have to earn! Are you still tossing a fart? Let's farm with peace of mind......

He remembered that in later generations, the yield of rice per mu in Jiangnan was about 1,400 catties, and Qishi was almost 1,000 catties. Ma Yilong actually planted an achievement close to modern agriculture in the Ming Dynasty!

"Don't be too happy, when the old man was in Liyang, the yield per mu of a season of rice planted by himself exceeded five stones." Ma Yilong arrogantly poured a basin of cold water.

The implication is that if you change to someone else's species, you will definitely not be able to reach seven stones.

"Even if they can get five stones, they will also make a profit." Zhao Gongzi didn't care, and said happily: "It seems that we want to vigorously promote Feitian powder!" ”

"That's a good word. But it's okay to say anything else, can you keep up with the supply of alum and earth nitrate? Ma Yilong asked again.

"Uh, this ......," Zhao Gongzi said.

It is easy to say that there is something in the damp cave by the sea. It's really not enough, and there are 30 million people in the south of the Yangtze River......

Alum comes from Wenzhou Mountain, where alum stone has been mined since the Song Dynasty. Its alum reserves account for about 60% of the world's and 80% of China's, and it is definitely enough. However, Wenzhou is not in the Jiangnan Economic Zone, and if it continues to purchase in large quantities, it will definitely cause prices to skyrocket.

It seems that only by merging it into the economic integration of Jiangnan can we ensure the stability of both prices and supply.

But the problem is that there is still Ning Shaotai in the middle, is it necessary to pull the four prefectures into the group for the sake of an alum mine? That's too big...... But it's all along the sea.

This is obviously a matter to be considered carefully, and Zhao Gongzi couldn't answer Ma Yilong for a while. So they dragged him to an empty room, closed the door, and taught him 12 other ways to make a mixture of soil. and 30 soil-to-nitrogen fertilizer methods; 20 kinds of soil-based phosphate fertilizer methods; 12 kinds of soil-based potash fertilizer methods. It is hoped that he will take a multi-pronged approach to make a rich variety of fertilizers, so as not to get stuck in the neck if there is a shortage of raw materials.

Ma Yilong was so shocked that his jaw was about to fall. "You, where did you learn so many methods?"

Zhao Hao could only laugh and say nothing, pretending to be mysterious. I can't tell him, because I didn't have a book to read when I was a child, so I read my grandfather's "Soil Fertilizer", "The Making of Soil Pesticides", and "How to Jerk off" many times.

Of course, Zhao Gongzi has also read tall books, such as Dad's "How to Repair Submarines" and "Missile Submarine-Launched Technology", but it is useless......

Most of these recipes don't use alum, and the ingredients are very common...... He filtered out the unusual, so as not to give him any more problems.

However, Mr. Meng He is still needed, and he will slowly explore the same. In addition to enduring the ecstasy of different fertilizers, we also have to use scientific methods to experiment with the effect of each fertilizer, and it is estimated that this work will not be completed in ten or eight years.

In addition, he ordered Sakai Sho Co., Ltd. to collect struvite from the Japanese islands, and the first batch had already been shipped to Tamna, waiting to be transported back to China. That's a good phosphate fertilizer!

Agriculture is the fairest industry, and you will be rewarded with as much nutrient as you give to the land.

The harvest is all made with manure! Before the chemical industry could produce fertilizers, it had to be stacked in this clumsy way.

The good thing is that with this rough natural fertilizer, the land will only become more and more manure and will not gradually compact, as is the case with chemical fertilizers......