The meat and egg stew with both color and flavor has been unanimously praised by everyone. The soft and glutinous octopus meat of Q bomb only needs to be bitten lightly, and the sweet thick juice fills the teeth and cheeks, making people reluctant to swallow. And the sea urchin steamed eggs were quickly carved up.

As the initial hunger slowly subsided, the crowd began to slow down and poke barnacles with chopsticks as they began to communicate the morning's harvest.

The most rewarding should be Lin Youqing and Duan Whale. They have completed the installation of infrared anti-theft cameras in the defensive wall of the bridgehead and placed the receiving end of the alarm on the first floor of the villa. As for the relocation of the monitoring system, it may be a little more difficult, but it should be possible to complete it by the end of April.

As for Su He's research progress, it is not suitable to talk about it at the dinner table. Anyway, at this moment, his mouth was also stuffed with the tentacles of Wangchao, and he muttered speechless. A few casual jokes were made and the delightful lunch ended.

After lunch, everyone washed their own dishes and chopsticks, and then they had a two-hour break, which they could use freely.

Duan Xingze went upstairs to take a nap, and Duan Whale manipulated the drone to observe the surrounding situation. Haichen lost rock-paper-scissors and was responsible for cleaning up the kitchen and washing the dishes. Lin Youqing is teaching Lu Rulan how to use salt and sunlight to preserve vegetables and meat.

The leafy greens that had been placed in the freezer were taken out one by one. The two of them removed the outer layer of ** dehydrated leaves and threw them into the enzyme barrel. Then the remaining leaves are broken off one by one and all taken to the tarpaulin in the outdoor yard to dry. Then he took out the pork leg that had been thawed at room temperature in the morning, removed some of the edges and corners and residual blood stains, and began to knead the pork leg with the coarse salt that had been dried these days.

Just when the two of them were busy, Su He pulled Du Yunfei out of the garden outside the house, carrying a plastic bag in his hand, which vaguely contained two green Sprite drink bottles.

The two walked to the doorway, which was crushed by lycoris flowers. Du Yunfei finally couldn't help but ask: "What to do?" ”

"Do it really yàn."

Su He put the plastic bag on the ground, took out two pairs of gloves and put them on one by one, and then took out the bottle in the plastic bag.

It was only at this time that Du Yunfei realized that it was not a Sprite bottle at all, but the liquid contained in it was turquoise.

He reacted immediately: "You brought the corpse liquid to the villa?!" ”

"What does it matter?" Su He didn't care, "Anyway, it doesn't smell good, just put it at the door." ”

As he spoke, he unscrewed the cap and poured about half a cap of green corpse liquid onto the ground on the side.

After about a minute or two, the soil underwent a visible change - the soil layer was rapidly uplifted, and a green leaf tip broke through the soil. In just a few minutes, four or five large and narrow Lycoris leaves grew, and then withered and decayed, and a green and red flower stem was extracted from the root, and the flower bud bloomed, becoming a red and hideous huge Lycoris flower.

The slow-motion-like magical scene came to an abrupt end. Su He turned his head and looked at Du Yunfei: "What do you think?" ”

Du Yunfei said: "This flower is smaller than the ones harvested the day before yesterday. ”

"Because I controlled the amount of corpse fluid."

"Why does growth stagnate after flowering?"

"It's also because of the dosage. You see—"

As he spoke, Su He poured some more corpse liquid into the root of the lycoris. I saw that the Lycoris flowers began to wither and wither rapidly, and then there was a burst of bulging in the soil, and a batch of larger leaves broke through the soil.

This cycle is repeated three times, and finally it is stable at the stage of long leaves. Su He tilted his head, waiting for Du Yunfei to ask the next question.

Du Yunfei stretched out his hand and touched the blade: "On the surface, it has obviously become larger, but has the internal structure changed?" ”

"From what I've observed, no." Su He shook his head, "I know you're definitely going to ask next, why did the Lycoris flower just get bigger, but the smiling vine in the aromatic plant area became a smiling vine?" ”

As he spoke, he took out another bottle of corpse liquid from the plastic bag and poured a little liquid into the Lycoris flower.

Another growth cycle began, but this time, it was no longer a leaf that was pulled out of the ground, but a long stem that resembled a flower stem. The long stem quickly turns from tender green to thick black with a strong sense of wood, and branches branch out on it, and long strips of green leaves hang from the roots of the branches.

After a few minutes, the green leaves shrank and fell again, and large red Lycoris flowers bloomed at the top of the branches. From afar, it looks like a small shrub on fire.

"It's mutated." Du Yunfei quickly grasped the point, "What's in this bottle?" ”

"Ordinary corpse fluid, but with a little bit of this-"

As he spoke, Su He took out a small PE ziplock bag from the plastic bag, which contained a few strange objects with the luster of pearls.

"This is taken out of the zombie's brain, let's call it a brain stone. This brain stone has the effect of causing plants to mutate. As for the direction and rules of the mutation, it is not clear for the time being. Ordinary corpse fluid, which does not contain brain stones, only accelerates the growth of plants and changes their appearance. As long as the corpse fluid remains, the plant will continue to grow. ”

After saying this in one breath, Su He waited proudly to see Du Yunfei show a confused expression that seemed to understand.

However, Du Yunfei lingered a few more times at the lycoris flowers in front of him, and his eyes suddenly focused on one place.

"You're missing a little."

He stretched out his gloved hand, which was still slender and beautiful, and pointed to the roots of the Lycoris flower: "Plants do not grow indefinitely, the soil does not allow it. ”

Following his instructions and looking down, Su He realized that the soil near the roots of the mutated Lycoris had become dry and white, which was clearly in contrast to the undisturbed soil around him.

"It's ...... Soils are degrading. Because the growth and mutation of plants also need to consume a certain amount of land nutrients? ”

This time, it was Su He's turn to think about it.

"Think about it, where in the world is there such a thing as a perpetual motion machine, there is borrowing and repaying the conservation of energy is the truth...... However, in this way, as long as the zombie falls, the plant will grow and mutate rapidly. This, in turn, leads to soil degradation, plants that cannot absorb more nutrients, and eventually dry up and die. After a few years, the dead plants are turned into fertilizer to re-nourish the land......"

"The earth is still the same earth, but without human involvement." Du Yunfei summed it up in a word.

Su He pondered for a moment, and suddenly raised his head to look at Du Yunfei: "You follow me!" ”

"Why?"

"Anyway, the doctor doesn't usually have much to do." Su He responded with a straight face, "And those medicines you store always have an expiration date." What happens after it expires? But my plants don't have an expiration date, and you can try to use them to expand your pharmacy. I believe that this is the most important direction of medical care in the future. ”

His remarks are not unreasonable. Du Yunfei weighed it seriously for a moment and nodded: "What are you going to do." ”

Su He smiled slyly: "If you want to do a good job, you must first sharpen your tools." Follow me obediently in the afternoon, and you'll know. ”

The two of them returned to the villa after finishing the work, just in time for the Eight Hearts and Eight Arrows drone to fly back overhead. Su He entered the house, and first asked Duan Whale: "Old Duan, has the drone found anything wrong?"

"That strange tree looks the same as yesterday, there are still a lot of zombies around," Duan Whale knew what the point of his question was, "Other than that, it is safe within more than twenty kilometers of the surrounding area." ”

"That's good."

Su He nodded, and also told everyone the preliminary conclusion of the real yàn just now. When everyone heard this, they were all very interested. However, Suhe also warned them not to try lightly to reduce unnecessary soil degradation.

After a tiring morning, everyone seized the time to recuperate. The alarm rang at two o'clock in the afternoon, and I immediately went back to work.

"Brother."

Before going out, Lu Rulan stopped Su He, "Everyone's coats and clothes are still piled up and unwashed these days." A few packets of laundry detergent in the dormitory on the construction site alone may not last long. Are there any soap plants on the island? ”

"Of course."

Since it was his cousin's request, Su He naturally agreed, "Laundry detergent, soap, detergent, disinfectant, mouthwash, hair wash, bath and bubble bath, my brother can make it for you." Which ones do you want? ”

"Just laundry detergent first." Lu Rulan replied: "I have asked Brother Xiaolin for help with the disinfectant." ”

Su He nodded, said "wrap it on my brother" and led Du Yun out of the door.

After greeting the others in advance, they drove the construction truck on the road, turned left after going out, and stopped on the side of the road in the economic plant area after driving one or two hundred meters.

"Here we are." Su He motioned for Du Yunfei to get out of the car, ran to the car body, and took out a shovel, a rake and a few huge snakeskin bags.

Du Yunfei raised his eyebrows, not understanding what he was going to do.

Su He gave him a shovel: "If you want to do a good job, you must first sharpen your tools, and the economic foundation determines the superstructure." I'm going to teach you the key skills you need to be a farmer in the new era—" he said, flicking the snakeskin bag on his back and posing in what he thought was chic, "Make compost!" ”

Du Yunfei looked at him like a fool: "Isn't there a ready-made fertilizer in the botanical garden?" ”

"Of course there is, but not too much, and it's gone. Therefore, priority must be given to ensuring the nutrients of greenhouses and existing plants...... Oh yes, and the vegetables that we will eat in the future also have to be fertilized. ”

After speaking, Su He stuffed another snakeskin bag for Du Yunfei, and strode into the large woodland of the economic plant area.

――――

The economic plant area is a relatively large area in the botanical garden. It is mainly planted with dozens of representative trees with economic value, including pine, camphor, stone oak, and olive. In mid-April, it is the flowering season of camphor trees, and the air is filled with a refreshing fragrance.

Without Su He to explain much, Du Yunfei skillfully used a rake to gather together the thick layer of fallen leaves covering the ground, and then shoveled everything into the snakeskin bag with a shovel.

He didn't say much, but his movements were extremely focused and neat, and in a short time he collected two large bags. I was about to change places to continue collecting, but when I looked up, I found that Su He was gone, and there was no one to be found in the huge woods.

What the hell is this guy doing?

Even though he was eight points sure in his heart, Du Yunfei also had two points of concern. I was about to shout at the handstand when I suddenly heard a bunch of things fall from a tree not far away.

He looked closely, and found that it was a large tree one or twenty meters high, and under the tree was a circle of snakeskin bags, on which a few pods had fallen here and there.

Looking up again, Su He was standing on a branch about three floors above the ground, picking the bunches of fruit between the leaves.

In a few moments, a pile of pods was laid on the ground. Su He crawled down slowly, and Du Yunfei found that there were small wounds on Su He's hands and even on his face, and even his coat had been cut.

He looked up again and saw that the branches of the tree were covered with dense red spikes.

As if noticing his gaze, Su He grinned widely, like a nobody.

"This ghost soaphorn tree has many thorns, and the skin is slippery, and every time you climb it, you have to hang colors."

As he spoke, he rolled up his sleeves and squatted down and began to pack the harvested soap into the snakeskin bag. ”

Du Yunfei also came over to help: "Why don't you use soapberry?" ”

"Do you think I don't want to? In April and May, soapberry is still blooming, where does the fruit come from? ”

As they spoke, the two of them had already put away half a bag of soaphorns, and carried them back to the construction truck along with the two large bags of stumps and leaves. After making persistent efforts, he turned back and packed three bags of leaves, and then drove to the construction site on the other side of the lake.

There is a car wash sedimentation tank near the gate of the construction site, and the iron shelves on the surface are removed, which is a good composting tank.

The two men poured all the five large bags of stumps into the pool and simply laid them out to become the bottom layer. Then go and look for the second layer of fertilizer.