Luo Xuan's face suddenly turned red, and he hesitated and said, "You said before that the basic principle of the 'Jumang Catalytic Technology' is middle school knowledge...... But then I searched for a long time in my middle school textbook, but I couldn't find it...... Can you give us a hint?"

Lin Han couldn't help but be stunned when he heard this, and he didn't remember what was going on for a long time: "What?"

Luo Xuan's eyes widened when she saw this.

Lin Han pondered for a while, and then remembered that when he was in Ayla Shan, he had fooled Luo Xuan that the technology of catalyzing plant growth was based on a certain "unthinkable" middle school knowledge, which made Luo Xuan believe it and always lingered.

But what he didn't expect was that Luo Xuan's curiosity was so long-lasting, and he still remembered this matter, it seemed that Virgo didn't run away.

"Did you really go through the textbook?"

Luo Xuan nodded: "I've looked through all the biology textbooks, but I still can't think of any content that can provide a theoretical basis for the "Jumang Catalytic Technology", I think this technology is simply incredible. ”

Lin Han coughed twice, and then made a serious look, as if he pondered for a while before he said, "Otherwise, it is almost impossible for ordinary people to think of it...... Just like the experiment that won the Nobel Prize in physics with scotch tape, before it was announced, I am afraid that no one else could have thought of it. ”

Physicist Geim, who won the Nobel Prize in Physics for his successful preparation of graphene a few years ago, became famous.

And his method of preparing graphene is absolutely unprecedented and shocking - glued with scotch tape.

To put it simply, stick transparent tape on the graphite, let the tape stick a part of the graphite, and then fold the tape in half, stick it and then pull it apart.

This was repeated many times, and finally only graphite with the thickness of one carbon atom was left on the tape, and graphite became graphene, a super strong material that previously existed only in theory.

As soon as the results of this study were published, I don't know how many physicists cried and fainted in the toilet. They do experiments, engage in research, and work hard every day, and as a result, people can play the Nobel Prize with a transparent tape, who would have thought of this plot.

Like this physics experiment, middle school students and even elementary school students can do it, as long as they go to a professional laboratory to test and confirm it, it is a major achievement that shakes the entire condensed matter physics community......

From this point of view, it is entirely possible to say that the theoretical basis of "Jumang catalytic technology" is a certain knowledge point in middle school.

Luo Xuan couldn't help frowning, lowered her head and was silent for a while, and her tangled appearance made Lin Han almost laugh.

He immediately changed the subject: "Okay, don't bother thinking about it. Prepare for people to drop the tree seeds, and if you are not feeling well, you might as well take a break, and you will not be in a hurry for one day or two. ”

……

The next day, hundreds of small drones were dispatched again, carrying a large number of tree species, and began to sow in the loess at fixed points.

These tree species include desert plants that are resistant to drought and sand, such as Saxon and Salix, as well as common greening trees such as poplar, weeping willow and whitebark pine, which are sown in the corresponding areas according to local conditions.

On the one hand, drones are sowing tree seeds, while on the other side, the Shaanxi Provincial Desert Reconstruction and Construction Committee is beginning to plan for water supply and irrigation.

"The drone works very efficiently, and we should find a way to solve the irrigation problem as soon as possible......"

In the conference room, the director of the Municipal Water Conservancy Bureau said: "My opinion is to temporarily use agricultural irrigation equipment to ensure the water demand for the growth of tree species, and the long-term goal is to improve the water conservancy construction in the loess area as soon as possible......

The mayor thought for a while and said: "Of course, there is no problem with irrigation in the early stage, but there has always been a shortage of water in northern Shaanxi, and water conservancy construction involves a lot, so I think we should plan well before acting." ”

The climate in northern Shaanxi is arid, with low precipitation and high evaporation, which inevitably leads to the shortage of water resources.

Although Yulin is close to the Yellow River, due to the water volume, sediment content and policy arrangements of the Yellow River, the local water is rarely used.

Now that the restoration of the loess has just begun, it remains to be verified when it will be truly used, and the hasty transfer of water may cause a lot of trouble.

Lin Han thought for a while, and then said: "In the future, you don't have to worry about the long-term water supply problem. The Loess Plateau and the Yellow River are two sides of the same coin, and the Desert Reconstruction and Construction Committee will definitely start to solve the Yellow River problem in the future. ”

"Solution?" many people couldn't help but look at each other when they heard this, showing a look of disbelief.

If Lin Han wants to say "relief", they definitely don't have many doubts, and even if they do, they will not show it.

But solving and mitigating are not a concept at all. For thousands of years, people have been unable to do anything about the above-ground river problem of the Yellow River, so they can only continue to build embankments to raise the riverbank, and take one step at a time like drinking water to quench their thirst.

The water of the Yellow River is clear, and the saint is out. If it can really solve the troubles of the Yellow River for thousands of years, it can really be called a "saint" with immeasurable merits.

Lin Han had no intention of saying more: "The issue of the Yellow River and long-term water supply will not be mentioned for the time being, and the short-term irrigation water supply does not actually require the time-consuming and laborious tossing of agricultural equipment. ”

"Mr. Lin means ......"

Lin Han smiled slightly: "Artificial rainfall." ”

The director of the Meteorological Bureau couldn't help but say: "Mr. Lin, artificial rainfall is not omnipotent, if the sky is dry and there is no moisture, it is useless to increase rain." ”

"The issue of artificial rainfall with rain bombs is left to the meteorological department, as for the water vapor ...... Just leave it to our Vientiane Laboratory. ”

……

As the Director of the Meteorological Bureau said, artificial rain is not without conditions, and if there is a lack of moisture in the sky, no matter how many rain-enhancing bombs are fired, it is useless.

Don't talk about rain bombs, it's meteorological authority, if there is no moisture, you can only catch blind.

Of course, Lin Han knew this, but he just used agricultural equipment to irrigate 20,000 square kilometers, and the efficiency was too low, and he didn't know how much time and energy he had to waste.

His idea is very straightforward, that is, through the ability of meteorological authority, water vapor and even rain clouds can be transferred from other places and sent to the sky above the loess of Yulin City, so that the relevant departments can use rain bombs to implement artificial rainfall.

He is only responsible for the transfer of water and gas, and the specific rainfall arrangements are handed over to the Shaanxi Reform Commission and relevant departments, saving time and effort, anyway, the rain bomb will not cost a few dollars, and the Shaanxi Reform Commission also has a lot of financial support, and the wealth is large.

If you want to say where there is a lot of water vapor, of course, it is the most on the sea, and it is inexhaustible.

But Yulin is an inland city after all, and it is too troublesome to go to the sea to transfer water and air.

The nearby places are also the territory of the Loess Plateau, and most of the water is scarce, and it cannot withstand the adjustment, and the estimated GDP will drop as soon as it is adjusted.

So after thinking about it, Lin Han finally decided: to go abroad.

……