Outside the door, the soldier who had taken Lu Feng to the research institute before was standing there, and behind him, Chen Xiangdong, the gray-haired father of rice and wheat, couldn't wait to pat him on the shoulder!

"Lu Feng! Lad! We've found the cause of the death of the spider plant branch! ”

He has been proficient in farming all his life, and now he seems to be acting very high, and he is excited for a while, so he came directly!

As everyone knows, Chen Xiangdong is old, and he doesn't have Xiao Jiujiu in his heart - in his opinion, if Lu Feng can send a spider plant, then at least there are at least two more in the hands of the people behind him!

Before, they were not easy to speak, and people said that they couldn't take it out, it must be because a group of them were famous when they said it, but in fact, all the four spider plant branches died inexplicably, and people must have lost confidence in them.

And now, they have found out the reason for the death of the spider plant branch, and if they come to open their mouths with Lu Feng again, they must be more confident!

- Now that the reason has been found, then a group of them can always find a way to break through even if they are exhausted!

At this time, everyone behind Lu Feng also reacted to the meaning of Chen Xiangdong's words, and couldn't help but ask excitedly: "Really?" ”

"There's hope!"

Even Zhou Shuangshuang couldn't help but feel fluctuating in her heart.

Although she swore before, if the institute could not produce the results for a long time, she would not be able to afford the food and drink of these tens of millions of people. Now that there is a breakthrough in research, she doesn't have to worry about these at all, she can be a little bolder!

Well...... Can't be too bold, what if she's going to stay here for the rest of her life?

There is also an unknown power in the sand, and it must be figured out, if you can really upgrade Kaiyuan Tongbao, it will be great!

As their thoughts turned, they had already followed Chen Xiangdong and were escorted to the research institute by the soldiers.

Before the end of the world, the institute was the premier research building in the imperial capital, and after the end of the world, because many instruments could not be used, coupled with environmental requirements, the largest and best territory was owned by experts related to agricultural science.

At this moment, pushing open the layers of doors, they also followed into the experimental field.

The so-called experimental field is actually still layers of yellow sand, and there is no half soil at all.

Their research was not a day or two, the vast and empty experimental field was divided into a one-square-meter lattice by special materials, and the remains of the four dead spider plants still remain in the four areas of ABCD.

"You see," Chen Xiangdong's students followed, explaining to them one by one: "These spider plant branches are very strong and healthy when they are transplanted in. Before the end of the world, they could use water, sand, and all kinds of dirt, and even if they were polluted, they could still struggle to survive. ”

That's right.

Everyone nodded in unison. After all, spider plants are easy to maintain and are well known.

A hint of helplessness flashed in the researcher's eyes, for the sake of this spider plant, they really exhausted all means.

"But you see, we have set up the best four zones, hydroponics, soil cultivation, and blending...... But they still at night, under our noses, quickly withered into yellow dry leaves, as if they had been drained of their vitality, and in just a few seconds, they directly became specimens-like existence. ”

It's so fast that they don't even have time to react.

He said, his expression very sad. But soon, this sadness was replaced by high emotions: "At first, we thought it was the water. ”

"After all, the water used to raise this spider plant is indeed better than the water we have here. However, the water we use for nutrients has been purified layer by layer, and although there is a gap compared to that bottle of water, we will not tell you that the No. 1 leader has not drunk such good water. ”

"But they still died."

The researcher looked at the bottle of spider plant that was protected by layers in the center: "Moreover, the temperature here is right, the spider plant absorbs water very quickly, and the bottle of water is missing in two days, we tentatively added our water to it, from the beginning of the deep purification water, drop by drop, for a period of time, slowly replaced with our usual ordinary drinking water ......"

Everyone followed his gaze to look at the only remaining spider plant, the leaves are verdant, the rhizome is strong, except for a little smaller, it is obvious that there are tender green leaves germinating on it......

"So, we immediately changed the direction of our research."

As he spoke, he turned his head to look at Lu Feng, his eyes shining: "It's the land!" ”

He was so excited that his voice was raised, and at this moment, he grabbed Lu Feng's arm and clutched it tightly: "It's the land!" ”

"It's the earth that's wrong!"

"As long as the plants are not touching the land......"

As he spoke, he looked at the plant specimens in the isolation area and explained incoherently: "Before, whether it was hydroponic or nutrient solution, in order to save resources, we still carried containers and buried them in the ground!" ”

"After all, it's been a long time since we've had greenery, and we're not sure if the exposure of plant roots to the air has any effect......

This explanation is actually very clear to everyone.

After all, the last days are so barren, and more than once some people have speculated that there is something wrong with the atmosphere or the land...... But given the fact that at the beginning of the apocalypse, those plants that were kept in bottles or pots also died, there is more speculation that there is something wrong with the air.

The institute is even more careless.

Because more resources are inclined to the artificial sun, a large number of people are needed to maintain it in the future, and some high-precision instruments, in the absence of experimental conditions, have long been disassembled and contributed parts.

Without photosynthesis, even if there are green plants and soil, it is difficult for them to survive. Especially in the last year, many people's bodies have lesions, and it is also because there is no sun and the atmospheric environment cannot be adjusted.

And before they got the spider plant, they didn't even have a sample, so it's very understandable that they would do this.

"That'...... Is it now certain that it is a land issue? ”

Zhou Shuangshuang followed at the end, looked at the humble environment, and asked curiously.

"Uh......"

The researchers were somewhat distracted.

At this time, Chen Xiangdong came over and said generously: "I'll tell you." ”

"Right now, it's the land that has the highest chance of causing plant death. It could be something that can't be detected, or maybe it's some kind of radiation, or maybe it's the ones that turn our soil into grains of sand......"

Zhou Shuangshuang's heart moved.

And Chen Xiangdong smiled slightly bitterly at this moment: "I won't tell you anything, a lot of research can't be done now, and I don't dare to be 100% sure of this conclusion." But ......"

He is already very old, but at this time, it seems that every wrinkle is shining, every inch of the ravine is stretched, and his whole face is full of hope!

Both hope and apprehension.