Chuan Shu Qi Leng: I own a department store

Xiao Xu has learned far more than you know, and I will shock you when he says it in the future!

Xu Wanning made a large pot of noodles, which was quickly divided.

Not even a bite of the two kinds of pasta sauce was left.

She hasn't even had dinner yet.

"Oops! We seem to have finished all the noodles. Xiao Xu hasn't eaten yet." Teacher Jin suddenly slapped his thigh and screamed.

Immediately, he looked at Xu Wanning with an apologetic expression: "I'm sorry, Xiao Xu, look at what happened..."

"It's okay, Teacher Jin, I'll just make some for myself later."

"If you teachers like it, I will make it for you in a few days."

Her cooking is not only delicious, but also fast. Just like this hand-made noodle meal, it may take other people two or three hours to make such a large portion, but she can finish it in more than an hour.

Teacher Lu asked subconsciously: "Why can't we do it tomorrow?"

After asking, he patted his head and said, "Look at my brain, everyone has to take turns cooking, how can I let you do it every time? Student Xu, please don't mind."

However, after eating this delicious meal of noodles, how could they eat the food made by others?

Is that called food? That's called wasting food!

"I will make something else for everyone to eat tomorrow, with a different taste. The teachers are already busy doing research every day, so just leave the cooking to me. I am young, so it is okay to suffer a little."

Seeing her say this, the other teachers were not polite and gave her the responsibility of cooking.

It’s not that they want to exploit young gays, it’s just that her food is so delicious.

The days passed like this, and in the blink of an eye, a month had passed.

During this period, Teacher Chen and several other teachers have determined the cause of soil contamination based on the directions provided by Xu Wanning.

It is indeed soil salinization.

After discussing with Xu Wanning, Teacher Chen sorted out the four reasons she wrote in his own words and sent them back to the school. The school would then step in and contact other regions to figure out the reasons for soil pollution in various places. .

The climate and environment of each place are different, and the causes of pollution are also different.

"Wan Ning, have you ever read in the book about the methods to control soil salinization?"

"Yes." Xu Wanning handed the information she had written early to Teacher Chen.

"Teacher Chen, I have summarized these based on the content in the book and my own study during this period. I am not sure whether they are all correct, so I have to do more in-depth research with Teacher Chen and other teachers."

Teacher Chen looked at the paper full of words and felt as if he had found a treasure.

Even if he didn't fully understand the content on it, he was extremely sure that the information on this piece of paper could definitely help them solve this problem.

There is also new progress in the greenhouse.

After a heavy rain one day, the rainwater seeped into the soil along the bottom of the greenhouse. Many vegetables that were about to mature were destroyed because of the heavy rain.

Although Teacher Jin and others were sorry and sad, they still accepted this fact with normal expressions.

After all, this has happened many times before.

They are all used to it.

Xu Wanning looked at several new additions to the experimental data and said inadvertently: "Can we reduce the use of fertilizers and drugs?"

As soon as she finished speaking, several teachers present turned their attention to her.

In the past month, except for cooking and resting, Xu Wanning has basically been studying behind the teacher. Her seriousness has made all the teachers like her very much.

And she can always say an idea that no one has thought of at any time, thus changing the direction of their research.

So now that Xu Wanning spoke, everyone looked at her with burning eyes, looking forward to her next speech.

Xu Wanning smiled sheepishly: "I also got the inspiration from Teacher Chen. Since the soil will be polluted due to severe salinization and cannot allow farmers' crops to grow normally, then our greenhouses should have the same problem. Are you worried?"

"I used to go to the countryside in Heilongjiang Province. The waste materials used there were all natural manure. The dosage was generally very precise. The maximum and minimum amount per acre of land must be within this range. Less won't work, but too much will. It will burn the crops being planted.”

"I asked an old farmer at that time, and he said that the biggest fear when applying fertilizer is fertilizer accumulation. Accumulation of fertilizer will cause the nature of the soil to change, reduce the absorption capacity, and affect the production of crops..."

Xu Wanning expressed her views in a way that is consistent with the thinking of this era.

After listening to her words, Teacher Jin slammed the table.

"I just said that I felt there was something wrong. It was probably that we were using too much medicine."

In order to make greenhouse vegetables grow well, they use a lot of drugs. It can be said that most of the funds are used to buy pesticides.

The potential for drug harm is also great, and the dominant symptoms are obvious, sometimes invisible, and difficult to detect.

They have a natural dependence on pesticides. They always feel that if they use more pesticides, the crops in the greenhouse will grow better.

In fact, this view was wrong from the beginning.

It's like a person taking medicine even if he's not sick. It's said to prevent disease, but in fact it changes the person's physique.

"still have a question."

"The drainage in our greenhouse is not very good. I heard Teacher Yang mention that this is the third time that our vegetables have been destroyed due to heavy rain. Greenhouse planting is afraid of both drought and rain damage. I personally think that compared with accumulating fertilizer, and phytotoxicity, we should find ways to properly solve the drainage problems."

"We have considered this problem before and tried other methods to solve it, but with little effect. As you can see, we have a total of six greenhouses here. The two in the northwest are after our first rain damage It was rebuilt and the drainage was solved by a specialist from the Department of Architecture. However, it still failed."

The discussion has reached this point and there is no way to proceed to the next step.

After all, Xu Wanning didn't specialize in this. She could only tell what she had learned in later generations and try to find a suitable solution.

However, the greenhouse technology of later generations already has a very mature system, and various agricultural tools and pesticides have been replaced for many generations and have reached a high level.

This is incomparable under today's circumstances.

It’s really hard to move even an inch.

Xu Wanning was in an indescribably depressed mood.

She originally thought that she could help people of this era live a good life as soon as possible by relying on the knowledge she learned in later generations.

But what she knows is really just theoretical knowledge.

Once used in reality, there are still many places that fail to meet the requirements.