The third more is sent, asking for a monthly pass In ancient times, without chemical fertilizers, if the land was cultivated for three or five years, the fertility would be reduced, and the crop harvest would be reduced.
As a result, people often have to resort to simple methods such as fallow and rotational tillage to restore fertility to the land.
Or plant two crops in three years, or plant one season of beans after one season of wheat and millet.
"If the soil is not growing, the grass and trees will not grow, and if the qi is declining, the creatures will not fail.
Wherever the fields have been planted for three or five years, their strength has been exhausted."
The use of fallow to restore the fertility of the land is too simple and backward, and it also greatly affects the harvest.
Therefore, the people have long discovered fertilization to maintain the fertility of the land, and some people have already concluded that the manure of people and animals and the ash of the stove are useless, and as soon as they enter the field, they will be turned into cloth and silk.
It's just that the Tang people's use of human and animal dung is too simple, and generally only the simplest dung.
Although this kind of manure can also be fertile, the conversion rate is still too low.
For example, if it is the same pile of pig manure, if it is managed legally, the effect will be great, and if it is not legal, the effect will be small, or even none.
Manure cannot be applied directly, otherwise it will sometimes hurt crops and is easy to burn seedlings.
The Tang people's manure compost is also to let the manure rot and prevent the seedlings from burning the roots.
"Uncle, what do you think if someone comes over to help you clean the latrine for free on a regular basis?"
After hearing this, the old man stopped moving.
"If there is such a thing, of course.
It's just that who will come and help clean the latrine for free, this latrine is smelly and dirty.
If you want dung, it is not more convenient to buy it directly from the dung field, it is not expensive, and it is much more cost-effective than getting it yourself. ” It was hard for my husband to imagine that someone would be so kind to come over and help clean the latrine.
After all, with this kung fu, it doesn't cost a lot of money to buy it directly outside the city.
Zhang Chao already knew about the manure yard outside the city, which was just a side job for the official workers who were responsible for cleaning up the manure in the latrines in Chang'an.
They took the manure out of Chang'an, built some large manure tanks, and simply piled the manure in the pools.
Then sell it to those who grow vegetables and farms nearby, and there is no processing at all.
This kind of dung makes the use greatly reduced.
Except for the vegetable farmers in the vicinity, it is difficult for ordinary people to take advantage of it.
Just like the people of Zhangjiagou in Bashang, although the fields also need manure, they are thirty miles away from Chang'an.
The unprocessed manure has to be transported by car.
But one car can't transport two loads, the cost of transportation capacity is high, and it can't be transported much in a day.
In particular, there are no ships on the Ba to pass.
If Zhang Chao collects manure from Chang'an, then it will be processed into dry manure, which will undoubtedly be much more convenient to transport.
In particular, he knows that after manure processing, it is not just convenient to transport, but also that the processed manure can be directly applied to the field, and the effect is several times that of unprocessed.
This kind of dry manure can not only be used as a base fertilizer, but also can be used to add fertilizer at different times of crop growth to help crops grow, which is very different.
During the Ming and Qing dynasties, the yield of fields in the south of the Yangtze River was extremely high, in addition to the abundant rain and fertile fields, it was inseparable from the developed manure use in the south of the Yangtze River.
A variety of high-quality manure keeps the field fertile and can even increase the yield by several percent.
Zhang Chao had seen his grandmother's manure in the countryside before, and although there was already chemical fertilizer at that time, the countryside would still make full use of manure.
There is also a special place for dung in my grandmother's village, where the dung in the latrine is regularly taken out and put into a special large dung pit, and a lot of things are added to it.
After soaking, take it out again.
On that open field, a layer of furnace ash or plant ash is first spread, and then the semi-thick and not dilute fermented cooked manure is spread on it, and it is spread into a round dung cake with a thickness of six or seven centimeters and a diameter of more than one meter.
When it is almost dry, use a hoe to chop it into pieces and make it into a two-pointed dung dung.
This kind of dung cake can not only add plant ash, but also add animal bone ashes, can also add soybean cake, and even some wheat straw stalks are also crushed and added, the effect can be better.
Zhang Chao also knows a method, which is to dig a large pool, throw the manure and the straw of the cow and horse ring gasket into a manure pit, add urine, water, etc. and then cover it for fermentation, which is also similar to biogas digester fermentation, although the fermentation is slow, but the consumption of organic matter is less, and the residue and biogas slurry have high fertility, especially the biogas slurry can even be used as an insecticide.
This method is an excellent manure processing method and can make the manure conversion more efficient.
If there is enough manure of this kind, Zhang Chao dares to say that he can double the yield per mu.
Later generations may have a disgusted face when they talk about dung, but in the past, it was a treasure in the hearts of farmers.
Although the Tang people don't know how to use it, it is also a good thing in the eyes of the farmers.
As long as Zhang Chao has a way to increase the manure capacity and make the manure easier to transport, he believes that this will be a great hit and an excellent project.
Historically, there were Tang people who cleaned up dung in Chang'an City and became a figure on the Tang Dynasty's rich list.
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Zhang Chao likes to make money and never hides it.
Now that there is such a good project, which can not only make money, but also have such a promising project, Zhang Chao is of course moved.
The old man who was weaving a willow basket said to Zhang Chao with a smile, "If someone really doesn't want money to help me clean the latrine, then all the dung in my house must be given to him." ” Zhang Chao wondered if there would be a conflict of interest with others in this transaction, "Uncle, do you think that if someone comes to collect dung for free, will the people who are responsible for collecting dung be willing?"
"Yes, why not.
Those people are all because they have orders from the government, otherwise how could they be willing to do this drudgery, it is bitter and dirty, and there is no way.
Although they can sell the manure they collect to vegetable growers on the outskirts of the city, they can't actually sell it for a few dollars. ” Zhang Chao nodded.
Now these people in Chang'an are not considered to have done it themselves, and their actual identity should be equivalent to Chang'an's sanitation workers.
Zhang Chao thinks this is a good thing, at least there is no private dung farm owner, so there will be no competition for land and dung.
In fact, he also considered that if there was really a private manure farm, then he would have to spend money directly to rent some land from them, or buy manure directly from them, and then process it himself.
But now it seems that it is possible to go directly to the city to collect manure, which can also save a lot of costs.
Or you can discuss with the relevant yamen, and directly contract the business of dung, maybe you can get three melons and two dates from the yamen.
After all, if someone contracts these, the yamen will also save worry and trouble.
It is not difficult to build a manure plant, the most important thing is to have manpower.
There are so many families in Chang'an, as well as those public toilets, they have to be cleaned and collected regularly, and at least hundreds of people are needed.
However, as long as Zhang Chao pays a salary, if the conditions are okay, there are still people who are willing to come.
You don't even need any young people, you can recruit people in the countryside who are in their fifties or twenties.
Equip them with a manure truck, get a few dung buckets, a dung spoon, and they're all alive.
Fertilizer is a good thing, look at the future generations of farming, no one relies on chemical fertilizer, a year to invest two or three percent of the harvest to buy fertilizer.
Although the input is high, fertilizer production has indeed increased a lot.
Soybean cake is estimated to be difficult to get, and now the soybean yield is not as good as in the Ming and Qing dynasties, and the soybean cake is actually mainly used as livestock feed, and even people can eat it.
It is estimated that few people are willing to plant fertilizer and farm.
But there are many things in the countryside, such as plant ash, straw, etc., and they are cheap, and they almost don't cost any money, and it is very good to use this to process dry dung cakes.
In addition, Zhang Chao thinks that he can get a few biogas digesters to ferment and make fertilizer, he does not need biogas for cooking and power generation, so the requirements of the biogas digester are not so high, just make an ordinary fermentation tank, biogas is completely optional, as long as the biogas residue and biogas slurry are OK, although this is a bit of a buy and pearl, but biogas fertilizer is also a good fertilizer.
Thinking about Zhang Chao is very exciting.
If he wrapped up the dung of the entire Chang'an City in the future, wouldn't he be able to become a generation of dung kings.
The dung is heavier than the marquis of ten thousand households.
Don't underestimate the manure collectors, just like those scrap factories in later generations, they all make a lot of money.
And Zhang Chao feels that he will farm in the future, and the fields at home will have a great increase in output with these high-efficiency manures.
Thinking that the entire dung of Chang'an would be contracted by him in the future, Zhang Chao was still a little excited, and when the thousands of dung diggers in Chang'an City were all his subordinates. provoked him, and if he didn't dig up feces for a month, the entire Chang'an City would stink.
Zhang Chao felt that the manure plant could be built on the edge of the Wei River outside the city, so that the shipping function could be fully utilized.
Several dung transfer stations can be built outside several city gates outside Chang'an City.
This can make an industrial chain, the dung to achieve division of labor and cooperation, the person is responsible for the door-to-door manure, and the person transports the manure out of the city.
Then the manure is transferred to various stations, and the manure is collected and transported to the processing station by car and ship.
There is a special person responsible for the processing and drying of manure.
Then there is a special person who is responsible for the manure, using a boat or car, to deliver the manure directly to the people's homes.
Of course, this is not gratuitous, the people give money, and they can send dung to their homes.
Just like buying fertilizer in the countryside in later generations, the salesman came to the door to sell the registration, and then delivered the fertilizer directly to the door, without you having to go through the trouble of transporting it yourself.
The people of the Tang Dynasty were also accustomed to using manure, although they did not know much about the deep processing of manure, but Zhang Chao did not have to worry about the promotion of manure.
If done right, this is an industry that doesn't look great on the surface, but it's actually quite amazing.
Fertilizer is closely related to farmers and farming, as long as Zhang Chao's fertilizer can show a good effect, I believe it will be very popular.
At that time, Zhang Chao will be able to open a chain manure factory.
As long as there is a city, he can open a manure factory, and he can also open a franchise factory.
Hahaha, forget it, I think a little too much, but even if it only occupies Chang'an, it is very good.
Even if you can only do it exclusively for a few years, you can make a fortune.
"The official has nothing to do" The old man saw Zhang Chao laughing from time to time, and he was a little puzzled, how could this official act like a fool.
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I borrowed a toilet and refused to leave.
"Thank you, father-in-law, for borrowing the toilet and saying goodbye."
Zhang Chao got up with a smile and bowed his hand to his father-in-law.
Out of his father-in-law's house, Zhang Chao walked at the door, with light steps and brisk steps along the way.
Damn, Lao Tzu is a man who is about to become the king of dung t1706231537: