Yuan Lao's hand was a little soft to hold, but it was very strong.

Chen Cheng shook hands and looked at Yuan Nong in a daze. He is still the same as on TV, with short hair and small head, some dark skin, wrinkles on his face, and a few obvious age spots. The smile is particularly kind, like a simple old peasant.

"This is our Yuan Lao!"

I don't know if he was excited or suddenly remembered his grandfather, Chen Cheng couldn't help but have wet eyes.

"Xiao Chen, let's go in and talk!"

Yuan Lao took Chen Cheng's hand like this and led him into the research institute.

Sitting in Yuan Lao's office, Chen Cheng couldn't help but look at it.

The whole office is very quaint, hanging two calligraphy and paintings, and some photos of Yuan Lao doing research in the field, and a dark red cabinet behind it, half of which are all kinds of agricultural technology professional books, and half are rice samples.

No trophies or medals were placed.

What surprised Chen Cheng even more was that there was no computer on Yuan Lao's dark red desk, only an open book, a glass tea jar, and a stack of thick notebooks.

As if seeing Chen Cheng's doubts, Yuan Lao smiled: "I'm old, I can't learn to use the computer, so I can only use notes and write." ”

Chen Cheng retracted his gaze and did it on the sofa.

The climate in Hannam province is humid and hot, and this type of sofa is more breathable than a leather sofa.

Then a man in his thirties with thick glasses walked in with a laptop in his hand.

"Hello Chen Cheng, I'm Yuan Lao's assistant, Deng Xing."

"Hello!" Chen Cheng stood up and shook hands with him.

The two sat down with greetings and waited for Yuan Lao to speak. Yuan Lao smiled and took out a small notebook from his pocket, opened it, and carefully wrote today's date on it with a pen, and habitually noted that the weather was "sunny".

Decades of agricultural technology research have allowed him to form this subconscious little habit.

Chen Cheng, who was watching from the sidelines, was impressed.

He felt that he had too much to learn from Yuan Lao.

"Xiao Chen, let's not talk about it, the main thing to meet you is to ask you about the amazing discovery of plant mineral transporter."

Chen Cheng said: "Old Yuan, I don't dare to ask for advice, but I must know everything." ”

In front of the respected Yuan Lao, Chen Cheng naturally couldn't have any reservations with him.

The hybrid rice technology he developed gave the Chinese people the confidence that everyone could eat enough, which was a great achievement, and if his research could help Yuan Lao, it would be a great honor.

"Xiao Deng, you tell Xiao Chen about the progress of our seawater rice research." Yuan Lao Dao.

Deng Xing opened his notebook, opened the introduction PPT of hybrid seawater rice, and then pushed it in front of Chen Cheng and asked him to read it while he explained.

Seawater rice, whose scientific name is "saline-alkali tolerant rice", is a rice variety that has been adapted to survive in saline-alkali soils through hybridization technology.

Saline-alkali land, as the name suggests, is the apprentice who has been salinized. It refers to the salt contained in the soil that affects the normal growth of crops.

Saline land does not mean that the soil necessarily contains too much sodium chloride, but carbonate. Excessive accumulation of carbonates in the soil will cause the formation of alkaline soil and alkaline soil, which is called saline-alkali land.

All kinds of saline-alkali soils are formed under certain natural conditions, and the essence of their formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salt gradually accumulates on the soil surface in the salt-collecting area.

Plants can barely survive in areas with severe saline soils.

In general, the saline-alkali land has poor water status, low organic matter content, low soil fertility, and poor plant living environment, resulting in the suppression of dominant traits.

For example, if a person consumes too little nutrients, there is no more nutrients to be used to grow taller and fatter in addition to meeting the physiological needs of survival.

The same is true for plants, if they do not have enough nutrients, they can only desperately develop roots and branches, and they cannot store more nutrients in fruit seeds, which is as worthless to people as weeds.

To make them more valuable, we need to study how plants in saline soil can absorb more nutrients and produce more fruits and seeds.

Yuan Lao: What they are researching is a rice variety that can adapt to saline-alkali soil.

This is a new attempt by Yuan Lao after the complete success of his "super rice" hybrid rice technology, and it is still in the main technical research stage.

After Deng Xing finished talking about their research progress on saline-alkali tolerant rice, Yuan Lao said meaningfully: "Xiao Chen, can you imagine that our country has 1.5 billion mu of saline-alkali land? ”

Chen Cheng shook his head.

He really didn't know much about that. However, according to his estimates, although the land like Yanyuan County is barren, at least most of the plants can still grow normally, and I am afraid that it is not saline-alkali land in the formal sense.

Yuan Lao said: "Saline-alkali soils are mainly distributed in inland basins, mountain depressions and flat plain areas with poor drainage, such as the Northeast Region, the Songliao Plain, and of course the land that can be cultivated by the sea. ”

"Northeast region, Songliao Plain?"

Chen Cheng was taken aback, how could the legendary black land also have saline-alkali land?

Deng Xing, who was next to him, explained: "The Northeast region is mainly due to its arid and semi-arid climate. Precipitation is low, evaporation is high, and salts dissolved in water tend to accumulate on the surface of the soil.

In summer, the rain is abundant and concentrated, and a large amount of soluble salt seeps into the lower layer or flows away with the water, which is the "desalination" season; In spring, the surface water evaporates strongly, and the salt in the groundwater accumulates on the surface of the soil as the capillary water rises, which is the "salinization" season. The saline-alkali soil in Northeast China has obvious seasonal phenomena of "desalination" and "salinization".

However, due to the low terrain of the Songliao Plain, the water-soluble salt moves from high to low with the water and accumulates in the low-lying area, so there is also a large area of saline-alkali land. ”

Hearing this, Chen Cheng was already shocked in his heart.

Deng Xing continued: "In addition to natural factors, human factors are also very serious in the formation of saline-alkali land. Overuse of land, overuse of pesticides and fertilizers, may cause salinization of land. ”

1.5 billion acres of saline-alkali land in the country!

There are so many good lands that he has the impression of producing excellent crops, but he didn't expect that there will be salinization.

Yuan Lao said worriedly: "China's number of mouths will reach 1.4 billion, and we need to increase grain production by 70 million tons every year." If the land continues to be degraded, how can we meet the need to increase food production? ”

Chen Cheng suddenly felt that his previous achievements were so insignificant, and Yuan Lao's vision of the problem was much longer than his.

Similarly, he needs to learn a lot from Yuan Lao.

Yuan Lao continued: "So I came up with the idea of developing saline-alkali tolerant rice varieties. After our research, at least about 350 million mu of the 1.5 billion mu of saline-alkali land has the conditions for planting saline-alkali tolerant rice. ”

Then, Yuan Lao's eyes showed a look full of hope, and slowly: "Xiao Chen, as long as we overcome the saline-alkali tolerant rice technology, the future is promising!" ”

Chen Cheng nodded firmly.

===Everyone,A new round of PK has started again,Ask for a catch-up!