Agriculture Idol

Chapter 133
When Li Chengxin was probing around the roots of aquatic plants by the pond with a net bag, Qi Lanting, who didn't know the dangers in the world, followed Li Chengxin to look, thinking that what he was about to catch was some small fish or shrimp.

"The spot-billed duck's food is usually hidden near the aquatic plants." While stirring the aquatic plants, Li Chengxin explained.

Soon, a bunch of torn grass blades were fished up.

Li Chengxin swung the net bag in the water to wash away the mud adhering to the blades of grass, and then grabbed something wriggling in the net bag: "Sure enough, there are a lot of them."

"Small fish or shrimp?" Qi Lanting reached out and asked Li Chengxin for something in his hand.

And Li Chengxin smirked and put the things he grabbed from the net bag into Qi Lanting's palm.

"Ah!!!!!!!!!!!!!!!!!!!" Amidst the scream piercing through the clouds, Qi Lanting shook the things in his hand and ran away.

[What's wrong with Lan Lan?What did Zicheng do to our family Lanlan? 】

Fans of Qi Lanting immediately jumped out of the barrage in the live broadcast room. For some fans, they watched the live broadcast entirely for Qi Lanting, and did not know the other contents of the entire live broadcast plan.

[Looking at Qi Lanting's reaction, I guess it's a bug. 】

[Looking at most of the creatures in the album just now, I guess they are bugs. 】

[One of Zicheng's favorite things to do is to let Qi Lanting touch bugs...]

As expected by most netizens, Li Chengxin took out a few wriggling things from the net bag and put them into the prepared small water basin. They turned out to be some aquatic insects.

"This is chài," Li Chengxin introduced. "It is the larvae of a dragonfly and one of the favorite foods of spot-billed ducklings."

Water flies usually lurk at the bottom of streams and ponds or under fallen branches and leaves. They are carnivorous and ferocious in nature. They like to prey on small aquatic insects and their larvae. Large water flies can even prey on small fish and tadpoles.The period of water clover varies depending on the species. The short one is about 2-3 months, the common species is about 1-3 years, and the longest one takes 7-8 years to fully mature, which takes about 8- It sheds its skin 14 times, then crawls out of the water and turns into an adult dragonfly.

The camera moved closer to shoot, scaring the netizens to scream like Qi Lanting.As a result, Qi Lanting's embarrassing appearance of screaming and running away was also let go by netizens.

In fact, the insects that look close to them look terrible, with all kinds of strange mouthparts, compound eyes with strange angles, arthropods, bristles, microhairs, scales and bristles, which always make people feel inexplicably scared.

But looking at it this way, the head and chest of the water slug really look like a dragonfly. After the complete metamorphosis, grow wings, and stretch the abdomen into a slender shape, it is a real dragonfly.

Li Chengxin has already decided to pay attention, and the pond they made on the roof will use the pond here as a model.

In order to attract creatures such as spot-billed ducks, aquatic insects such as leech must survive in the pond, and aquatic plants seem to be necessary.In order to create a wetland environment with water and soil suitable for the growth of aquatic plants, a crucial problem needs to be solved-still the load bearing of the roof.

I studied it before when I was building the field. The roof of the Geyue Entertainment Building can only bear the weight of soil, plants and water. The area where the pond is planned to be built cannot bear more than 300 kilograms per square meter. The load-bearing capacity is higher than that of the previous field, but it will exceed the limit if it is only 20 cm of soil as the foundation.

But here, the land next to the three wetlands looks at least half a meter thick.

"Ah, this kind of place that has been specially strengthened to build a pond is really enviable!" Li Chengxin said with emotion.

The administrator who accompanied them smiled: "It's not all dirt, and the original plan here was not to build a pond."

As he spoke, he took out a photo of the construction of this place. In the photo, several workers were carefully processing white lumpy objects.

"Huh? What is this white thing?" Li Chengxin asked curiously.

"It's expanded polystyrene," the administrator replied.

"This expanded polystyrene..." Li Chengxin took out his mobile phone to search, "Isn't this just plastic foam? So these are all plastic foam on the shore?"

"Yes!" The administrator's answer made Li Chengxin fall into deep thought.

"Thinking about it this way, if we also use plastic foam as the foundation for our top floor pond, it seems that we can indeed create a pond."

Lightweight and strong plastic foam has the advantages of low relative density, low thermal conductivity, low water absorption, impact and vibration resistance, heat insulation, sound insulation, moisture resistance, vibration reduction, and excellent dielectric properties. In addition, it is light in weight and large in size. It has the characteristics of aging resistance and corrosion resistance.

In recent years, plastic foam has become a major problem in garbage disposal. Even Hongming Village often needs to clean up the plastic foam washed up on the beach for positioning and floating.

But when you think about it, it seems that the pond with this plastic foam as the base can be used for decades, which is exactly the material they need for this project.

Just do it, the person in charge of the program contacted the company that made plastic foam in this wetland area, and sent the entire live broadcast team there, so that Li Chengxin and Qi Lanting could open the eyes of netizens and see how plastic foam is made of.

Compared with the medium fiber bricks and glass pumice visited before, the production line of plastic foam is much shorter.

The manufacturing process is to inject polystyrene resin raw material particles extracted from petroleum into a heating furnace, and heat them in a steam heating furnace at 100 degrees, and the raw material particles will increase to about 50 times in size.In the steam, the raw material particles eventually stick together and become plastic foam.

Soon, the formed huge rectangular plastic foam was pushed out of the heating furnace by the production line.A piece of plastic foam that is 2 meters long, 1 meter wide and half a meter high weighs only 98 kilograms because 20% of its volume is air.If it is a soil block of the same volume, the weight is almost 1.5 tons.

After referring to the wetland structure they visited before, combined with their planned roof pond area, the model designer of the plastic foam manufacturing factory planned the final shape for them, which would cost a total of 35 yuan of plastic foam of the previous size.

Since this is a one-time small batch customization, it is impossible for the plastic foam factory to manufacture molds for this amount of work. Therefore, the final molding needs to be processed by Li Chengxin and others.

In order to process these plastic foam blocks, Li Chengxin borrowed simple processing tools from the factory.

Qi Lanting patted the plastic foam standing on the side that was taller than him: "This can be used on the pond on the roof, it's great!"

With these plastic foams, we can cut out the shape of a pond on the roof of a building with limited load-bearing capacity, cover it with soil, and plant plants. Maybe we will soon be able to create a habitat for dragonflies and spotted ducks like we saw before. of the pond!

(End of this chapter)