The genetic modification of the Iasi black pig was completed last time, and now it only needs to be synthesized into a fertilized egg and implanted into the sow.

He first extracted the gold of the breeding pig boar, this matter is familiar to Lao Xu, Chen Cheng can rest assured that he will hand it over.

Two days later, Lao Xu successfully completed the task.

"Lao Chen, can you not tell Wang Kai about this matter."

"What's the matter?"

"Helping the boars get gold."

Chen Cheng suddenly realized.

With Wang Kai's mouth, it is estimated that he will have been laughing for a long time.

Of course, these things are often encountered in animal husbandry and cultivation technology.

The techniques of breeding and delivering pigs are already considered high-level technologies, and ordinary researchers are not qualified to do them.

At least a research associate will have to be.

Chen Cheng scanned the boar's gold and the sow's eggs into the system, then replaced the original genes with the previously improved genes, and then re-extracted the synthesized golden eggs.

When he sent the improved golden eggs to the breeding center, Lao Xu had also completed the adjustment of the sow's gestational period, which happened to be in a fertile state.

To be honest, Chen Cheng still admires Lao Xu's technology. Conducting research on animal husbandry technology is much more complicated than conducting rice cultivation.

It's not like rice pollination, you just have hands.

This is really not something that Chen Cheng can operate.

Of course, neither can Lao Xu.

It's up to their mentors to get their hands on it.

After watching the process of receiving money from the animal husbandry professional tutor in amazement, Chen Cheng said that this job is really not something that ordinary people can do.

The next step is to formulate a cultivation plan and execute it according to the plan.

Chen Cheng relieved himself to hand over these matters to Lao Xu and his mentor, but he still focused on the in-depth study of the previously developed technology.

The first is the super urease microbial technology.

At that time, he developed a super urease microorganism that can achieve symbiosis with soybean rhizomes, which greatly improved the drought resistance and urea absorption capacity of soybean seedlings.

Successfully rescued the autumn soybeans in Hanxi Province, which were affected by drought and were on the verge of being lost.

Chen Cheng has been paying attention to soybean yield enhancement technology because soybean, as an important cash crop, has many roles, and it is also the object of speculation by grain traders in the international grain market.

After picking out with the four major grain merchants, Chen Cheng vaguely felt that soybeans should be the technology he should pay attention to.

According to the current situation, Chen Cheng's goal at this stage is to prevent the four major grain merchants from affecting domestic grain prices, no matter what they do.

As for abroad.

He can't manage it for the time being.

Chen Cheng's idea is simple and straightforward: to develop a soybean variety that can increase yields by at least 50%.

Only in this way can we be sure to resist the market operations of the four major grain merchants.

But the problem now is that it's winter, and there are no live soybean plants for him to use as a substrate for research.

Therefore, for the time being, he can only start from the super urease microorganism and study its symbiotic effect with soybean rhizomes, hoping to improve the rhizobia of soybeans at the same time, so that their symbiotic ability is stronger.

If it can provide more nutrients for soybean plants, it will be much more convenient to solve the soybean yield problem in the future.

Symbiosis is a biologically peculiar phenomenon.

Symbiosis refers to the close mutually beneficial relationship between two different organisms. There is a "symbiosis" between animals, plants, fungi, and any of the three. In a symbiotic relationship, one partner provides the other party with help that is conducive to survival while also getting help from the other party.

The strict definition of symbiosis is: two organisms living together, dependent on each other, and mutually beneficial. If they are separated, neither of them or one of them can survive.

The traditional definition of symbiosis is the mutually beneficial relationship formed between two different organisms that are in close contact. Most biologists still agree with this definition.

However, some biologists believe that any relationship between different species that has frequent close contact is symbiotic, regardless of which one of them benefits.

These include symbiosis and parasitism. The former refers to a symbiotic relationship in which one party benefits and the other party is not affected; The latter refers to a symbiotic relationship in which one party benefits and the other suffers.

Therefore, symbiosis in a broad sense includes mutual-beneficial symbiosis, partial symbiosis and parasitism.

Soybeans and soybean rhizobia are mutually beneficial symbiosis.

Rhizobia soybeans are a living microbial preparation, and rhizobia within rhizobles are mutually beneficial and symbiotic with leguminous plants.

The mutually beneficial relationship between them is that the leguminous plants produce organic matter through photosynthesis, and part of it is supplied to the rhizobia. Ammonia, which is produced by rhizobia through biological nitrogen fixation, is supplied to leguminous plants to promote their growth and development.

Rhizobia originally present in the soil invades through the root hairs, lateral root openings or other parts of leguminous plants, forming invasion lines and entering the cortex of the root, stimulating cell division in the host cortex and forming root nodules.

Rhizobia enter the nodule cells from the invasion line and continue to multiply, and the cell population containing rhizobia in the nodules forms bacterial-containing tissues.

However, the stock of rhizobia in the soil is always small, so in the current process of precision cultivation, the content of rhizobia in the soil will be artificially increased to promote the development of soybean.

Soybean rhizobia is available in liquid and solid dosage forms. Solid rhizobia are applied by seed dressing or soil application.

"The First Evolution"

Liquid rhizobia are used by soaking. Soybean rhizobia agents can also be added to the seed coating.

Seed coating is also a new type of plant cultivation technology.

If you have watched modern agriculture sow seeds, you may find that the seeds are made into bright colors. That's seed coating.

Seed coating is to coat the outside of the seed with a layer of nutrients and anti-insect and antiseptic substances, which will be added with eye-catching colors in order to prevent accidental ingestion.

After sowing, seeds coated with seed coating agent can quickly absorb water and expand. With the gradual development of the embryo in the seed and the continuous growth of the seedling, the seed coating agent will slowly release the various active ingredients contained in the seed coating agent.

It can be effectively absorbed into the body by seeds and seedlings, so as to achieve the purpose of controlling pests and diseases at the seedling stage, promoting growth and development, and improving crop yield.

Chen Cheng's focus this time is on rhizobia.

His goal is to develop rhizobia that can survive in the soil for a long time and can multiply rapidly and symbiotically in soybean rhizomes.

That is, without the need to artificially add rhizobia strains, the rapid and mutually beneficial symbiosis between soybean and rhizobia can be realized.

To achieve this goal, Chen Cheng feels that it is not difficult.

Since the 1880s, 36 species of rhizobia in 7 genera have been discovered, each with its own characteristics. Chen Cheng was sure to find useful genetic fragments from them and assemble them to improve them into the effect he wanted.

A rhizobia that can survive in the soil for a long time and can quickly multiply in symbiosis after encountering rhizomes such as soybeans.

If it is really invested in the market, it will definitely greatly increase the domestic soybean production and solve the problem of excessive use of chemical fertilizers.