Outside the village.

Zhang Chao and a group of villagers were surrounding the fermentation pool, and there was indeed a movement. In order to achieve a good fermentation effect, this pond is imitated with the design of the biogas pool, a closed circular pool.

After pouring a pile of stuff like manure, water, crushed hay, fallen leaves, etc., it seals it.

After these days of sealing and fermentation, a lot of biogas was stored in the area, and the air pressure continued to rise. Then the lids on the trachea reserved by Zhang Chao were washed open.

The air outlets made of bamboo tubes were previously sealed and covered with a wooden plug, but the plug was not particularly tight. When the air pressure in the pool reached a certain amount, the plug was washed away and the biogas ran out.

There is a smell of smell outside the pool, but it is not the smell of feces, but a smell of rotten eggs. It is not very strong, so you may smell it.

A villager leaned his head to a trachea to check it out, and Zhang Chao hurriedly grabbed him.

Although the biogas has been discharged for a while and there is basically not much gas coming out now, the biogas is toxic. It inhales the mixed gas in the biogas, which will cause mild headaches and dizziness, accelerate heartbeat, and sweating. In severe cases, it will become unconscious and even die if there is no emergency rescue.

"That's swamp gas, it's toxic to inhalation." Zhang Chao warned everyone.

When the villagers heard that it was poisonous, they all retreated a lot.

Zhang Chao couldn't help but smile, "Don't worry, unless you put in this ventricular tube and inhaling a lot, you will get poisoned. Otherwise, it doesn't matter if you stand outside."

This kind of fermentation tank is also 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 tank is almost done.

Zhang Chao called Daniu and asked him to open the outlet.

"Get a spoonful of feces and scoop it out."

After so many days of sealing and fermentation, the manure and broken grass leaves have been rotten and fermented. After the biogas is discharged, the slag and sludge are left.

Zhang Chao didn't bother him, so he carefully checked the scoop of scoop and slag.

Everyone admired Zhang Chao as he stared at him seriously.

They are all high-ranking officials of the fifth rank, and they have founded the county, so they don’t think the feces are smelly.

After watching for a while, Zhang Chao confirmed that his first fertiliser finally succeeded.

Swamp fertilizer is a good thing. After fermentation in the pond, it is mainly sterilized liquid, which can account for nearly 90% of the total fertilizer, while swamp residue only accounts for more than 10%.

But their fertilizer efficiency is not something that ordinary compost fermentation can achieve.

The sludge is rich in nutrients such as nitrogen, phosphorus, potassium, sodium, calcium. In addition to the above ingredients, the sludge also contains organic matter, humic acid, etc.

Anyway, according to what Zhang Chao knows, the utilization rate of scrub fertilizer is 20% higher than that of scrub fertilizer. Especially the content of nitrogen, phosphorus and potassium is more than 50% higher than that of scrub fertilizer.

In addition, the worm liquid can be used to feed pigs, cow, chicken, duck and fish. Feed it in small quantities to promote metabolism. It can even be used as an insecticide. It can not only be used to soak seeds and increase the germination rate, but also directly spray worm liquid to insecticide crops with insects.

The sterilization liquid is actually equivalent to a compound fertilizer. It can be used as base fertilizer and top dressing.

However, Zhang Chao knew about these, but the villagers didn't know about them yet.

It is necessary for them to see them with their own eyes. There is a vegetable field not far away, and many people in the village grow vegetables here. In winter, there are also white radish, carrots, rapeseed, etc.

Zhang Chao asked the big bull to carry a bucket of marsh liquid and Er bull to come to Zhang Chao's own vegetable garden with a bucket of marsh residue. There were many people in the Zhang family, so this vegetable garden was very good. In the twelfth lunar month, it grew very well. The radish grew very tall, and most of the pieces were exposed outside. The vegetables were extremely green, but the garlic sprouts covered with wheat straw were not very good, and the leaves were a little yellow.

The cabbage there also grew a lot of insects, and the leaves ate many holes.

"Shuozi, go carry the water."

"Big beef, mix the water and the worm liquid in a ratio, then apply the ginger and garlic seedlings and water along the ridge."

"Part one bucket with water and scorpion liquid and spill it directly onto the leaves!"

"Pillar, dig some nests in this radish field, and then bury some slag in each pit. Remember to cover the soil."

Zhang Chao stood in the vegetable garden and assigned command.

Although marsh fertilizer is strong, there is also a bad thing, that is, it must be applied as soon as possible and should not be stored for a long time. If you take it out of the biogas tank, you must directly pick up the vegetable fields in the fields and apply it. You can only pile it outside the pond for one or two days. Over time, the effect will be lost, especially the fast-acting nitrogen will evaporate.

When the slag is piled up in the open air and dried, the nitrogen loss will be as high as 65%, and the ammonia nitrogen loss will be nearly 90%.

This is also a disadvantage.

It is best to use slag as base fertilizer, and it must be applied deeply, such as making nests or digging trenches. After fertilizing, it will cover about ten centimeters of soil to reduce the evaporation of hair growth.

As for the worm liquid, it is most suitable for top dressing. When it comes to the fundamental crop, it is appropriate to add water to dilute it so that the roots and leaves will not be damaged. It can also be directly diluted and the shallow leaves can be used for insecticide.

Today, Zhang Chao is going to actually experiment with the effect of this fertilizer.

A group of old men, women and children ran to the vegetable garden to watch the fun, stood carefully in the ditch, and lined up in rows. Some people took the initiative to help carry water and fertilizer, help mix water, and dig nests to bury fertilizer.

After working for a long time, several pieces of land in the Zhang family's vegetable garden were fertilized. Under Zhang Chao's special instructions, about one-tenth of each ridge of vegetable fields was left without fertilization.

Without comparison, there is no effect.

Zhang Chao plans to wait a few days later to see the difference between fertilization and not fertilization.

"Sanlang, is this fat really useful?" Some old villagers asked. They are old and their hands and feet remain unchanged. It is cold in winter, so they don't go to the ditch to earn work and earn money and food. These people have been growing all their lives, and of course they have planted vegetables for the rest of their lives.

They know how to pour manure and fertilize the vegetable fields. For example, they often apply the ash accumulated in the stove to the vegetable fields, apply the manure to the vegetable fields, carry the urine accumulated at home to the vegetable fields, and even apply cow manure, horse manure, chicken manure and other cow manure and horse manure to the vegetable fields.

The effect of applying feces frequently is still very obvious.

But everyone has never built a cellar-like pool like Zhang Sanlang to ferment manure.

The manure was fermented quickly. It only took only a few days to make it into manure and slag. In the past, they had to ferment manure and composting for a long time. The manure had to be fermented for at least half a year, and the manure and gaskets of livestock had to be piled up for several months.

"Of course the effect is good. In a few days, you will find out how good these fertilized vegetables grow. Especially these ginger vegetables have grown a lot of insects, but after splashing the worm liquid, the insects will be much better." Zhang Chao said to everyone confidently.

Some villagers don’t believe it very much, they have been planted for a lifetime.

If you, Zhang Sanlang, say that you are cooking and practicing medicine or even writing books, you will definitely be great, we will take it. But are you better than us in this kind of manure pouring in this way?

Someone said, "Even if you pour ordinary manure, this dish will grow well."

No comparison will hurt.

Zhang Chao said with a smile, "It's no point to say anything, but seeing it is true, then let's compare it. In this way, there are still many vegetable fields here. Today, we will ask Daniu and others to pick some ordinary fermented manure and water it according to our original old method. You can also find another vegetable field and pick some fermented manure to apply it to you. Let's take a look in a few days to see how the effect will be."

In order to be more contrasting, Zhang Chao also left about 20% of the length of each ridge without fertilizing it for comparison.

After Ma Zhou and a group of officials and guards of the Eastern Palace moved the things, they asked Ma Zhou to bring them to Zhang Xima, wanting to see what the septic tank looked like so that it could allow Xima to come over to watch it in person.

When they came over, they found that Zhang Chao and a large group were in the vegetable garden.

There were also people who were pouring fertilizer, which seemed to be manure. A few people even covered their noses, but they were very curious to see so many people there.

"Swamp fertilizer?" Liu Ren, a proofreader, was confused. Could it be that this fertilizer was taken from the swamp? But this Ba Shang is on the plateau, where did the swamp come from? Even if there is a ditch next to Zhangjiagou, there will be no swamp there. Besides, it will have to go up and down a few miles of high slopes. Wouldn't it be unprofitable to carry a load of fertilizer?

Ma Zhou was in a very good mood today and intended to show his power for his old boss. He smiled and said, "There is no swamp on the Bashang, but Zhang Sanlang made a swamp pool and poured manure, hay, leaves and water into it. It will take not many days to ferment the sludge of the sludge."

Several officials looked like they were listening to the heavenly book, with disbelief on their faces.

They all think that Ma Zhou is teasing them and can even make a swamp. How to do this? Although they are humans, many of them are also from landlords and have some knowledge of farming. The manure must be fermented before applying, and it cannot be applied without a few months.

Zhang Sanlang is not doing anything nonsense.

But looking at Ma Zhou's appearance, it doesn't seem like he is joking.

Oh, it's really awkward.

"Zhang Xima seems to be making a bet with the villagers."

"Make a bet with the villagers?"

Everyone speeded up and rushed into the vegetable garden. After a lot of effort, they endured the stench, and finally heard the content of the bet.

Zhang Sanlang actually said that the fertilizer he made was effective. The fertilizer that had only been fermented for less than half a month was actually better than how many months it was?

This worm is poured directly on the leaves of vegetables, which can also kill insects that eat vegetables?

The officials were stunned.

We have never planted the land, but we have seen the land. If we apply manure directly to the vegetable leaves, can we really burn the vegetable leaves? The manure can even kill the pests. Are you really kidding?

Some people can't stand it anymore.

"Zhang Xima, don't know what the bet is for this bet?"

Zhang Chao turned around and looked at the green robe, "Why, do you want to make a bet?"

Ma Zhou laughed loudly on the side. You dare to bet with Zhang Sanlang that you are too young.

"I'm here to open the market. I bet on Saburo's marsh and fertilizer efficiency is better, and I will pay five per share. The fellow marsh and compost are better, and I will pay three per share. You can place bets now if you want to buy it. It doesn't matter if you don't bring money. Accept verbal bets and just make up for it."

"What if it's flat?"

"If it's tied, then I'll accompany you." Ma Zhou unceremoniously opened a very attractive handicap.

Zhang Chao has the highest odds, but obviously no one believes that Zhang Chao's fertilizer effect is better.

"I won by buying a fellow villager and put 50 cents." Some people couldn't help but bet first, and then more and more people followed him, but eight out of ten were bought and won by buying a fellow villager.

Occasionally, if one or two people don’t buy fellow villagers, most of them buy flats, and few people actually buy Zhang Chaoying.

Ma Zhou smiled and said, as the dealer, he firmly believed that Zhang Chao would win. The fewer people buy Zhang Chao, the more he earned.

Alas, they are all too tender! To be continued.
Chapter completed!