Outside the village.
Zhang Chao and a group of villagers were surrounding the fermentation tank, and there was indeed movement.
In order to achieve a good fermentation effect, this pond imitates the design of a biogas digester, a closed circular tank.
After pouring a bunch of things such as dung, water, broken hay, fallen leaves, etc., into it, it is sealed.
After these days of sealed fermentation, a lot of biogas has been stored in the area, and the air pressure is constantly rising.
Then the caps on the trachea reserved by Zhang Chao were washed open.
The vents made of bamboo pipes were previously sealed and covered with a wooden stopper, but they were not particularly tightly plugged.
When the air pressure in the pond reaches a certain level, the plug is washed away and the biogas escapes.
There was a stench outside the pool, but not the stench of feces, but the smell of rotten eggs.
Not very strong, probably smelly.
A villager leaned his head to a ventilator to look, and Zhang Chao hurriedly grabbed him.
Although the biogas has been discharged for a while, and now there is basically not much gas coming out, but the biogas is toxic, and inhaling the mixed gas in the biogas can cause mild headaches and dizziness, rapid heartbeat, and increased sweating.
In severe cases, they will be in a coma, and they will even die when the rescue is not urgent.
"It's swamp gas, toxic to inhale."
Zhang Chao warned everyone.
When the villagers heard about the poison, they all backed back.
Zhang Chao couldn't help laughing, "Don't worry, unless you are holding this trachea, you will be poisoned if you inhale a lot."
Otherwise, it's okay to stand outside. ” The purpose of such a fermentation tank is to speed up the fermentation process, and the sealing effect is better.
Now that the biogas is overflowing, it is estimated that the fermentation in this pond is almost complete.
Zhang Chao called Da Niu and asked him to open the discharge port.
"Take a dung scoop and scoop it out."
After so many days of sealed fermentation, the manure and broken grass and dead leaves have rotted and rotted, and after the biogas is discharged, the biogas residue and biogas slurry are left.
Zhang Chao didn't like the smell, and carefully checked the biogas slurry and biogas residue scooped out.
Everyone looked at Zhang Chao staring so seriously, and they all admired it.
Everyone is a dignified five-grade high-ranking official, and the county has been founded, and no one thinks it smells.
After watching it for a while, Zhang Chao confirmed that his first pond of biogas manure was finally successful.
Biogas manure is a good thing, after fermentation in the pond, it is mainly biogas slurry, which can account for nearly ninety percent of the total fertilizer, while biogas residue only accounts for more than one percent.
But their fertilizer efficiency is not what ordinary compost can achieve.
Biogas slurry is rich in nitrogen, phosphorus, potassium, sodium, calcium and other nutrients.
In addition to the above components, biogas residue also contains organic matter, humic acid, etc.
Anyway, according to Zhang Chao's knowledge, the utilization rate of biogas manure is two percent higher than that of compost manure.
In particular, the content of nitrogen, phosphorus and potassium is more than 50% higher than that of compost fertilizer.
Moreover, biogas slurry can also be used to feed pigs, cows, chickens, ducks and fish, and a small amount of feeding can promote metabolism.
It can even be used as an insecticide, not only for soaking seeds, increasing germination rate, but also directly spraying biogas slurry for insecticide of pest-infested crops.
Biogas slurry is actually equivalent to a compound fertilizer.
It can be used as base fertilizer and top dressing.
However, these are all things that Zhang Chao knows, but the villagers don't know yet.
Seeing is believing, and there is a vegetable field not far away, where many people's vegetables are planted.
In winter, there are also white radish, carrots, and rape.
Zhang Chao asked the big cow to carry a bucket of biogas slurry, and let the second cow carry a bucket of biogas residue to Zhang Chao's own vegetable garden.
There are many people in the Zhang family, so this vegetable garden is very good, in the wax moon, but the growth is also very good, the radish grows very high, most of it is exposed, and the wead is also verdant, that is, the garlic seedlings that are still covered with wheat straw are not very good, and the leaves are a little yellow.
The cabbage over there also has a lot of insects, and the leaves have many holes.
"Bolt, go and carry the water."
"Big cow, mix the water with the biogas slurry, then apply the woad and garlic seedlings, and water them along the ridges."
"Then match a bucket of water and biogas slurry and splash it directly on the leaf surface" "Pillars, dig some nests in this turnip field, and then bury some digestate in each pit, remember to cover the soil."
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Zhang Chao stood in the vegetable garden and dispatched the conductor.
Although biogas fertilizer is powerful, there is also a not-so-good place, that is, it must be applied as it is used and should not be stored for a long time.
Take it out of the biogas digester, you have to directly pick the vegetable field and apply it, at most it can only be piled up outside the pond for a day or two, and after a long time, the effect will be lost, especially the available nitrogen will volatilize.
If the digestate is stacked and dried in the open air, the nitrogen loss will be as high as 65%, and the ammonia nitrogen loss will be nearly 90%.
This is also a disadvantage.
Biogas residue is best used as base fertilizer, and it must be applied deeply, such as nesting or digging trenches, and then covering about 10 cm thick soil after fertilization to reduce the volatilization of hair raising.
As for the biogas slurry, it is most suitable for top dressing, and in the case of root crops, it should be properly mixed with water and diluted, so that it will not hurt the roots and leaves.
It can also be directly diluted on the shallow foliage for insecticidal purposes.
Today, Zhang Chao is going to actually experiment with the effect of this biogas fertilizer.
A group of old men, women, and children all ran to the vegetable garden to watch the excitement, and stood carefully in the ditch, forming a line of lines.
There are also people who take the initiative to help carry water and fertilizer, help mix water, dig nests and bury fertilizer.
After working for a long time, several pieces of land in the vegetable garden of Zhang's family were fertilized, and under Zhang Chao's special instructions, about one-tenth of each vegetable field was left without biogas fertilizer.
Without contrast, there is no effect.
Zhang Chao plans to wait a few days to see the difference between fertilizing and not fertilizing.
"San Lang, is this fat really easy to use?"
asked some old villagers.
When they are old, their hands and feet remain the same, and it is cold in winter, so they do not go to work in the ditch to earn money and food.
These people have also planted the land all their lives, and of course the vegetables have also grown for a lifetime.
Fertilize the vegetable patch, they know it.
For example, the ash accumulated in the stove is often applied to the vegetable field, the manure is infiltrated into the vegetable field, the urine accumulated at home is picked into the vegetable field, and even cow dung, horse manure, chicken manure is applied to the vegetable field after being soaked.
The effect of the manure is still obvious.
But everyone has never built a cellar-like pool to soak manure like Zhang Sanlang.
This dung is also soaked quickly, and after only a few days of hard work, it has become dung and scum.
In the past, they used to compost manure, but it took a long time.
The manure has to be soaked for at least half a year, and the manure and gasket grass of the livestock have to be piled up for several months.
"Of course the effect is good, and in a few days, you will see how well these fertilized vegetables grow.
In particular, these weads originally had a lot of insects, but after splashing the biogas slurry, the insect infestation will be much better.
Zhang Chao said confidently to everyone.
Some villagers don't believe it, they have been farming all their lives.
If you Zhang Sanlang said that you stir-fry vegetables, practice medicine, or even write books, then you must be amazing, and we will take it.
But this kind of dung pouring on the ground, are you better than us?
Someone said, "Even if you pour ordinary dung, this dish will grow just as well." ” If you don't compare, it doesn't hurt.
Zhang Chao said with a smile, "Words are unfounded, seeing is believing, then we will compare."
In this way, there are still a lot of vegetable patches here.
Today, let's let the big cows pick up some ordinary manure and water it according to the old method.
You can also find another vegetable patch, pick some piles of manure to apply, let's see in a few days, how effective it will be. ” In order to be more contrasting, Zhang Chao also let those vegetable plots leave about 20% of the length of each ridge without fertilization for comparison.
After Ma Zhou and a group of officials and guards of the East Palace finished moving their things, they asked Ma Zhou to take them to Zhang Xima, wanting to see what the manure tank looked like, and he could let Xima go over to watch it in person.
When they came, they found that Zhang Chao and a large group of Li were in the vegetable garden.
There are also people pouring manure, which seems to be manure.
A few people covered their noses, but they were curious to see so many people there.
Liu Ren, the "biogas fertilizer" school book, was confused.
Could it be that this fertilizer is taken from the swamp, but this bashang is on the hill, where does the swamp come from, even if there is a ditch next to Zhangjiagou, but there will be no swamp there.
Besides, there is a high slope that has to go up and down a few miles, and it is not cost-effective to pick up a load of fat.
Ma Zhou is in a very good mood today and intends to promote his old club.
He smiled and said, "There is no swamp on the ba, but Zhang Sanlang made a swamp pond and poured dung, dry grass and dead leaves and water into it, and it won't take many days to extract the biogas slurry and biogas residue." ” A few officials looked incredulous, as if listening to a book from heaven.
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They all felt that Ma Zhou was making fun of them, and they could actually make a swamp pond to come out, how to do this, and although they were scholars, many of them were also born as landlords, and they also knew something about farming.
The manure has to be piled up before application, and it cannot be applied without a few months.
Zhang Sanlang won't be coming here. can look at Ma Zhou's appearance, and it doesn't seem to be a joke.
Ouch, it's really tangled.
"Zhang Xima seems to be making a bet with the villagers."
"Bet with the villagers" Everyone quickened their pace, and also poured into the vegetable garden, and after a great deal of effort, endured the stench, and finally heard the contents of the gambling contract.
Zhang Sanlang actually said that the biogas fertilizer he made had a miraculous effect, and the fertilizer was only soaked for less than half a month, which was actually better than the effect of several months This biogas slurry is poured directly on the vegetable leaves, and it can also kill the pests that eat the vegetable leaves The officials were stunned.
We've never farmed, but we've seen farming.
Manure is applied directly to the leaves, will it really not burn the leaves, the manure water can actually kill pests, you are really not kidding Someone can't stand it anymore.
"Zhang Xima, I don't know what the bet of this bet is" Zhang Chao glanced back at the green robe, "What, you want to make a bet" Ma Zhou laughed straight on the side, I dare to bet with Zhang Sanlang, you are still too young.
"I'm here to open the market, bet on Saburo's biogas fertilizer efficiency is better, one to five.
Gambling on the villagers to pile up manure is more efficient, one loses three.
If you want to buy it, you can bet now, it doesn't matter if you don't bring money, accept verbal bets, and just go back and make up for it. ” "What if it's flat?"
"If it's flat, then one with two."
Ma Zhou unceremoniously opened a very tempting handicap.
Zhang Chao has the highest odds, but obviously everyone doesn't believe that Zhang Chao's biogas fertilizer is better.
"I'll buy a fellow to win, and I'll get fifty yuan."
Some people couldn't hold it back, and the first one came out to bet, and then more and more people followed suit, but eight out of ten were bought by fellow villagers who won.
Occasionally, one or two people who didn't buy a fellow countryman were mostly flat, and there were very few people who really bought Zhang Chaoying.
Ma Zhou closed the bet with a smile, he, the bookmaker, firmly believed that Zhang Chao would win, and the fewer people who bought Zhang Chao, the more he would earn.
Hey, it's still too tender t1706231537: