Ren Feng took the train, arrived in Qianjiang City in one night, and then transferred to the bus to his alma mater, which was less than eight o'clock. Usually at this time, it is when Zhou Liang finishes exercising early, goes back to the dormitory to take a shower and change clothes, eats breakfast, recites ancient poems, memorizes English words, and a series of morning activities are just finished and ready to go to the laboratory. But today Ren Feng came over, and he came to the school gate to wait for him.

Seeing Ren Feng hurrying over with a big backpack on his back, Zhou Liang stepped forward and patted him on the shoulder: "Brother Feng, it's been a long time!" ”

Ren Feng also responded to Zhou Liang: "Yes, I haven't seen you for more than two years!" Look at you getting younger! ”

Zhou Liang smiled and said, "Brother Feng has been the boss for two years, and he is obviously much more mature!" ”

"Hahaha......" The two smiled happily, and the reunion of old friends was really refreshing.

"By the way, Brother Feng hasn't had breakfast yet, right?" Zhou Liang asked.

"I ate as soon as I got off the train, and I have long developed the habit of getting up early, and I eat breakfast on time every day, which is no longer the same as when I was in college!" Ren Feng replied.

"It's a good habit! Brother Feng, I didn't expect you to keep the changes you made 2 years ago! Of course, Zhou Liang knew Ren Feng's past, but he didn't expect that a person could really do it if he wanted to change and stick to it. As the saying goes, "the country is easy to change, and the nature is difficult to change", it is very difficult for a person's style and habits to change, especially if they are maintained for a long time, and Ren Feng has just done it.

"Hehe......" Ren Feng knew that his image in college was indeed not very good.

"Then let's go to my lab and have a look!" Zhou Liang said, regardless of Ren Feng carrying a big bag.

But Ren Feng doesn't mind, he puts things first, and he is not afraid of having no place to settle down.

When he arrived at Zhou Liang's laboratory, Ren Feng put his bag on a chair and listened to Zhou Liang show him his treasure.

He lifted a white plastic pot containing a reddish-brown liquid, and said to Ren Feng: "This is the EM fungus, which was bought from the footbasin country, and it is very expensive." This kind of bacteria is actually more appropriate to call the microflora, the full name is the effective microbial flora, which is a mixture of many microorganisms. These microorganisms cooperate with each other, can quickly become a dominant bacterial group in the microenvironment, and have a very efficient and complete biological chain in the degradation of organic matter and the elimination of harmful bacteria, which has a great role in planting and breeding.

In fact, there are a large number of microorganisms in any environment, but these microorganisms generally grow and disappear with the change of the environment, and there is little communication between each other, and the symbiotic relationship is rare. And this artificially enhanced selection of EM flora is like a well-trained army, with a clear division of labor, orderly advance and retreat, and rely on each other, so it is extremely efficient and adaptable to the environment.

Since the promotion of this EM fungus by the foot basin people, it has been applied in agriculture, environmental protection and other fields in many countries around the world and has achieved very good results. ”

"I know something about this." Ren Feng said: "Microorganisms are an extremely important link in the ecological chain, and the development of modern science and technology has improved the efficiency of production and consumption very quickly, but the decomposition of this link basically relies on the most primitive microbial instinct, which leads to the imbalance of the entire ecological cycle." Strengthening the decomposition efficiency of microorganisms is one way out. This kind of EM bacteria, which strengthens various microbial tissues, is a good idea. ”

Zhou Liang put down the plastic pot and said, "Yes, that's it." However, this EM bacteria are artificially selected from nature and integrated into a natural flora. It's like an army, but it's just a discipline training and can work together. However, each strain as an individual is actually the most basic strain, and its own ability is not beyond that of other individuals, but it can play a more effective role in the system. ”

He picked up another plastic jug, which contained a brownish, blackened liquid: "This is a special flora that our laboratory has strengthened on the basis of general strains. The strains have been genetically fortified, and their abilities have been greatly improved, and the variety has been reduced. It's like a specially trained special soldier, the quality of the individual soldier is also very good, and the cooperation is more tacit! ”

Ren Feng asked, "Genetically modified strains?" ”

"It's not!" Zhou Liang replied: "These have not been genetically modified. In fact, there are two kinds of genes that work in bacteria, one is its own genetic genes, which will be inherited from generation to generation without loss; There is also a plasmid, a foreign circular gene that resembles a parasitic gene. Plasmids replicate themselves, can be passed between different species of bacteria, and can be lost due to environmental reasons.

And our fungus is through special acclimation conditions, a variety of beneficial plasmids are concentrated on a few strains, so that these ordinary strains have more and more incredible functions and decomposition efficiency! ”

"What kind of strong law?" Ren Feng asked.

"Let's put it this way, with the same number of strains under the same conditions, the effect of this special bacteria can reach about 10 times that of this EM bacteria imported from the foot basin country!" Zhou Liang explained: "Of course, the exact same conditions cannot be done, and the role of the two microbiota is not completely consistent, and these microbiota also have different effects on different occasions, and I say that 10 times is a comparison of the whole, and it cannot be generalized." In addition, our microbial community has a very strong degradation effect on the original soil pesticide pollution, and those pesticides that can only be degraded in the natural environment for decades can be completely degraded in less than a month through our microbiota, which is an excellent soil remediation agent for those polluted land! ”

"So strong!" Ren Feng was a little distracted, thinking that it would be good if he could solve the problem of heavy metal pollution. In that way, the effect on mine rehabilitation is immeasurable.

"It's not the best!" Zhou Liang threw another bombshell: "We are ready to continue to strengthen these microflora through genetically modified means, and there are even more incredible functions." However, this method is different from conventional fortification, and there is a great risk that if you are not careful, you will create superbugs that do not exist in nature, and it is likely to cause damage to the natural ecology, so the trial of a single strain is still being carried out! ”

He picked up a smaller plastic pot and said, "This is a nitrogen-fixing bacterium that we made through genetically modified means." Nitrogen-fixing bacteria in nature mainly form symbiotic relationships with leguminous plants, and there are also some nitrogen-fixing bacteria that form symbiotic relationships with other plants and algae. However, for some major crops, such as rice and wheat, there are few symbiosis of this nitrogen-fixing bacteria, and these are precisely the ones that are most in demand. This is a nitrogen-fixing bacteria that live in symbiosis with rice! With this, there is no need to add nitrogen fertilizer at all! ”

"Does that mean that you don't need to fertilize crops in the future?" Ren Feng asked excitedly.

"That's not going to work!" Zhou Liang explained: "Nitrogen is abundant in the air and can be ingested at any time. Some elements must be transferred through other circulation routes, such as phosphorus, potassium, molybdenum, etc., which only exist in the soil and generally only have limited flow with hydraulic action, but in fact they are mainly transported by humans. These are not covered by microorganisms alone, and the amount contained in the soil is used up and must be replenished.

However, microorganisms also have a role to play, that is, they can make use of the part of fertilizer that cannot be used in the soil and rocks. Because the way the roots of plants absorb nutrients is relatively simple, it is generally dissolved, and if it is solid, it may not be directly used by plants. Through the action of microorganisms, these nutrients that were originally insoluble can be converted into dissolvable chemical forms, so that they can be absorbed by crops. ”

Zhou Liang pointed to a few plastic pots and said: "There are several strains here, such as this one is a phosphorus-fixing bacteria, which can extract the phosphorus elements in small stones to form phosphate esters, which can be absorbed by crops." At the very least, it can improve the utilization rate of phosphorus in the land, reduce the amount of fertilizer, and reduce the diffusion of phosphorus. There is also this potassium-fixing bacteria, this boron-fixing bacteria, and so on. ”

Ren Feng's eyes lit up, this is a good thing. I used to call Zhou Liang and knew that there was such a thing as microbial fertilizer, but I didn't go into details, and then I realized that it was really a good thing for his farm. He couldn't help but ask Zhou Liang: "Are you specifically engaged in this research now?" It's just tailor-made for me! ”

"Hehehe~" Zhou Liang smiled and said, "This is just a by-product of my experiment, and my main topic is inconvenient to disclose." ”

"Don't say what you can't say, what are you going to do with these by-products?" Ren Feng asked.

"You have to give it all to you, but our laboratory is not a factory, we only get so much, if you use it for a long time, you can only make it yourself. I'll teach you all the methods, and I won't charge you tuition! Zhou Liang rarely made a joke.

"That's great, I don't know if the preparation equipment is very expensive, will I get it when I go back?" Ren Feng asked.

"It's not very complicated." Zhou Liang said: "Some things may be more troublesome in the laboratory, but some conditions are easier to control when it comes to large-scale production." ”

"That's good!" Ren Feng was a little impatient: "When will it start?" ”

Zhou Liang is also a resolute person: "Just now!" I'll introduce all the products to you first, and figure out the various functions first. ”

It seems that this time Ren Feng has to stay in school for a few days, and he has to learn the technology and never go back again, so he can't learn half-heartedly.

In this way, he began to follow Zhou Liang to learn the cultivation and domestication of microorganisms and the technology of screening and strengthening.

In the evening, return to Zhou Liang's dormitory to rest. Now Zhou Liang's dormitory is already a two-person room, and the other one is also a doctoral student, and he hasn't come to school yet, so Ren Feng doesn't have to lay on the floor. They talked about their former classmates together, some of them have been admitted to the civil service and embarked on a career in public service, some are engaged in the pharmaceutical industry and become engineers, and some have changed careers to do sales, which is also very popular. After several years of hard work, everyone has basically stabilized their foothold in the society and started a new starting point in life!

Zhou Liang's relationship with his girlfriend is also about to come to fruition, this time he went to see his parents on both sides of the family during the Chinese New Year, and the next time he goes back, he will get married. It turned out that a few of the classmates in the undergraduate class were already married, and it turned out that the second child in their dormitory had given birth to a son and was upgraded to a father.