January 3, 2021, morning.

The world of your own.

The greenhouse vegetable greenhouse planned by Xu Ming was completely completed today.

A vegetable greenhouse with square shape and a large area than a small villa, with a height of about three meters, and a vegetable greenhouse with transparent glass on all sides and top is like a transparent box standing in front of Xu Ming.

This building has also become an artificial building second only to a small villa in the world.

If you take a formal name, Xu Ming calls it a "Healthy Vegetable House".

With his hands in his waist and standing in front of the "Healthy Vegetable House", Xu Ming couldn't help but sigh.

Not easy.

It's really not easy.

Xu Ming worked hard for this vegetable greenhouse for six days, and 18 days passed by the world with him.

He checked a lot of relevant information online, carefully read the instructions provided by the manufacturer, and asked professionals to learn many useful skills, such as electric welding. He spent most of his day studying before he barely welded the two pipes together.

In the final construction stage of the vegetable greenhouse, Xu Ming, who had almost never had the habit of working overtime, worked two days for the first time, and dug an open-air reservoir 3 meters long x 2 meters wide x 2 meters deep above the hillside of the vegetable greenhouse, applied a layer of cement around it, and then opened the vortex channel to introduce the lake water in the big lake to the south into the reservoir.

Then it is connected to the microcomputer automatically controls it through the pipe at the bottom.

The irrigation problem of vegetable greenhouses will be solved here.

"A 12 cubic meter pool is enough for vegetables in the greenhouse, so it will take ten days and half a month to water it?"

This saves a lot of manpower.

In addition, there is charcoal, so Xu Ming also bought ten bags, each bag of fifty kilograms, totaling 500 kilograms.

Xu Ming also calculated how much charcoal would be burned if the vegetable greenhouse was to maintain a carbon dioxide concentration of 0.03%.

"The interior volume of the vegetable greenhouse is 90 cubic meters, multiplied by 0.03%, which is equal to 0.027 cubic meters, that is, 27 liters, and then divided by 22.4 and multiplied by the relative atomic mass of carbon elements 12... It is enough to burn 14.46 grams of charcoal to reach the standard concentration."

"Just considering the infiltration and dissipation of air, as well as the continuous absorption of carbon dioxide during the growth of vegetables. There is information online that a broad-leaved tree can absorb 33 kilograms of carbon dioxide a day, a linden tree can absorb 16 kilograms of carbon dioxide a day, and a hectare of broad-leaved forests absorb 1 ton of carbon dioxide a day."

"My 30 square meters of vegetable greenhouse has no worse ability to absorb carbon dioxide than a linden tree, right? That is, at least 16 kilograms of carbon dioxide are needed to supplement the vegetable greenhouse every day, multiply by 12/44 of the proportion of carbon elements, that is, 4.36 kilograms of charcoal every day, which is equivalent to 301 times the charcoal required to maintain concentration... The ability of plants to absorb carbon dioxide is too strong, right?"

This means that when vegetables undergo photosynthesis during the day, they can consume all the carbon dioxide in the greenhouse in just two or three minutes... Of course, this situation should occur during the rapid growth period of vegetables, and other growth stages will not be so exaggerated.

In short, in the world where vegetables grow normally and quickly, a lot of "carbon fertilizer" must be supplemented.

The 500 kilograms of charcoal bought by Xu Ming may supply up to one season of vegetables.

In addition, in the early stage, Xu Ming had to measure and record in real time every day. How much carbon dioxide is consumed every day during different growth stages of vegetables? Use a computer to count the daily carbon dioxide absorption rate chart. If possible, Xu Ming would go to the manufacturer to customize the automatic carbon dioxide replenishment device, which would save him from burning charcoal every day.

So growing vegetables in the portable world is a very troublesome and complicated matter.

"Forget it, don't think too much about what's going on next. Plant the first crop of vegetables first!"

The greenhouse had just been completed and reached its usable state, so Xu Ming couldn't wait to grow vegetables.

And he made preparations several days in advance and purchased multiple varieties of vegetable seeds in the vegetable market or Baotao.com.

There are small vegetables, white radish, carrots, chili, cabbage, cabbage, tomatoes, celery, leeks, cucumbers, tomatoes, potatoes, beans, garlic, shallots, pumpkins, cabbage, lettuce, spinach, zucchini, broccoli, water spinach, winter melon, lentils, okra, etc.

In addition, I also bought seeds of three common fruits: watermelon, melon and strawberries.

Before planting the seeds, Xu Ming did all the detoxification treatment, soaked them in concentrated salt water, exposed them to the sun, etc., to reduce the number of harmful microorganisms on these seeds.

Everything is ready.

The only thing that was placed in front of Xu Ming was left is the last step to grow vegetables.

But some difficult situations follow.

"Why are those vegetables better?"

"The healthy vegetable house is so big, it is impossible to say that it is willful to plant all of them. You can only make limited choices and grow a few kinds of vegetables."

“Which should I choose?”

Looking at the dazzling array of vegetable seeds in front of me, Xu Ming, who had been thinking and entangled for a while, finally chose ten kinds of things according to his taste and preferences, and planned the size of the planting area-

Green vegetables: There is no vegetable that is purer than it. Green leaves are almost all of it. It represents health, with a planting area of ​​3 square meters.

Chili: The world without chili is unimaginable. Xu Ming is a spicy party and must grow chili, with a planting area of ​​3 square meters.

Tomatoes: This is also a common vegetable, which can be scrambled eggs and made into soup. It is healthy and nutritious, with a planting area of ​​3 square meters.

Carrot: It is rich in vitamins and has a planting area of ​​3 square meters.

Cucumber: It can be eaten raw, stir-fryed, and beautify it. The planting area is 3 square meters.

Broccoli: Nutritious vegetables, planting area of ​​3 square meters.

Little cabbage: white and tender, crisp and sweet, with a planting area of ​​3 square meters

Cabbage: You can eat one for several days, and the planting area is 2 square meters.

Leek: It can be used to scramble eggs. If the roots are not damaged, it can be cut in endlessly. It is very similar to life, with a planting area of ​​1 square meter.

Beans: Common vegetables, planting area of ​​2 square meters.

Celery: Common vegetables, planting area of ​​1 square meter.

Garlic + shallot + lettuce: Garlic leaves can be stir-fried with meat, which is a must-use side dish for braised fish, and garlic is a common seasoning for stir-frying; shallots are commonly used side dish, sprinkle some scallions into the soup, make a shallot tofu, which is fragrant; lettuce can be cooked with noodles, hot pot, and can be eaten directly... Garlic, shallot, and lettuce are planted in 1 square meter.

There are 11 kinds of vegetables and 3 kinds of side dishes, and all the planting spaces in the vegetable greenhouse are divided.

Since it was the first time to grow vegetables myself, Xu Ming didn't know whether this distribution was reasonable, and he was worried that it was too crowded. Even watermelons, melons, strawberries and other fruits were not planted. When the first crop of vegetables matured and adjusted later, we can see if we could see if we could plant some of them.

"Okay, let's arrange it like this! Learn and explore slowly, and then you can grow the vegetables you want to eat as you wish."

That afternoon.

Xu Ming spent a shift and spent nearly two hours sowing the vegetable seeds and watered a lot of water.

The vegetable planting work is completed.
Chapter completed!