"Damn! It's clouded again!"

Zhang Baobao is very unhappy, the angel system has really dug a pit for himself! The limited planting area is Axe Mountain, and the land near Axe Mountain is full of acidic soil, but the system allows itself to plant alkali-loving sycamores!

Fortunately, I did my homework in advance, and I don't know how I would have died when the mission failed.

"It seems that it is necessary to choose a planting site in advance, and if you don't know it, you need to improve the soil first. After all, the time given by the system is only 10 minutes. Photosynthesis must also be accelerated with spiritual power, light intensity strengthened with fire spirits, and wind spirits to gather air and provide more oxygen for seedlings as much as possible......"

Zhang Baobao was thinking about his plan step by step, but he was limited to his own ability, and the wind spirit level was not enough to be able to separate oxygen and nitrogen. The carbon dioxide produced by plants should also be quickly removed from the system, and the photosynthetic reaction should be carried out as positively as possible according to the principle of Le Chatre.

The control of the water spirit is also the key, when the seedlings are overwatered, it will cause the rotten roots of the sycamore to die, and then it will be a direct failure!

……

Zhang Baobao prepared for about a day, checked that tomorrow's weather is a sunny day! The preparations for task 6 are almost done, Zhang Baobao confidently closed the book! In his mind, he thought carefully about the steps to be carried out tomorrow, and felt that there was no more problem, so he went to sleep under the covers.

The next day, on the outskirts of Wufang City, Axe Mountain.

It took Zhang Baobao about two hours to find a relatively less acidic soil area in the rugged mountains of the Axe Mountain area.

"Bang Bang"

Zhang Baobao threw the big bag on his back directly on the ground, the bag was full of things he had prepared in advance, after all, the task given by the angel system was too cheating, 10 minutes long 5 meters!

Zhang Baobao moved his limbs slightly, and the heavy backpack was carried on his body for more than two hours, which was really tiring enough.

"Phew"

Zhang Baobao unzipped the backpack and took out the calcium carbonate from the bag. The soil is acidic, and the first thing to do is to alkalize the soil where the sycamore trees are to be planted. The reason why calcium carbonate is chosen is mainly because it is not so alkaline, which is easier for people to grasp in the process of regulation.

Secondly, the calcium flowing into the soil will play a great role in improving the stability of plant cell walls, enhancing plant resistance and promoting the longitudinal growth of plant cells, and from this point of view, it can promote the growth rate of plants.

5 meters in 10 minutes, this mission is faster than that!

"Sprinkle! sprinkle!"

Powdered white calcium carbonate, under the urging of Zhang Baobao's wind spiritual power, was evenly sprinkled on the soil in front of Zhang Baobao, and at the same time, Zhang Baobao urged the soil spiritual power, one to accelerate the process of acid-base neutralization, and the other to adjust the degree of calcium carbonate alkalinization, otherwise it would be too much.

It didn't take long for the soil alkalization to complete. Zhang Baobao bent down and picked up a small handful of soil from the ground with his fingers, and after careful inspection, he threw it back to the ground with satisfaction.

"The first step is done, and a good start is half the battle. Victory is in sight, come on!" Zhang Baobao clapped his hands and flicked away the remaining soil on his palms.

Subsequently, Zhang Baobao chose a suitable place to dig a soil pit the size of a bowl and about 20 centimeters deep, in preparation for planting trees and throwing seeds for a while.

Planting trees and digging pits is also particular, Zhang Baobao also found relevant content when sorting out relevant information yesterday, because the growth of seeds needs to continuously absorb water and nutrients in the soil, so the depth of the tree pit is required. 20 centimeters is already the limit of Zhang Baobao. No matter how deep it is, with Zhang Baobao's spiritual cultivation now, I am afraid it will be difficult to reach the seeds for artificial regulation.

Zhang Baobao walked around the pit twice, and then cut off all the branches and leaves in the surrounding trees that might block the sunlight of the plane tree.

The plane tree likes light, and if the sun's rays are blocked, that is not good.

Everything was ready, Zhang Baobao carefully took out a seed from his pocket, and gently put it into the soil pit dug in advance.

"Tick! The Angel system has detected the start of system task 6, and the 10-minute timer will start now! At the same time as the voice sounded, a 10-minute countdown appeared on the translucent screen in front of him.

Looking at the continuous beating and decreasing of time, Zhang Baobao did not dare to be idle, and hurriedly injected earth spiritual power into the location of the soil pit just now to promote the growth of the sycamore tree seeds.

The earth spiritual power injected by Zhang Baobao is actually not a simple earth spiritual power, but also a little water spiritual power. The purpose of injecting a large amount of earth spiritual power is to gather nitrogen, potassium, phosphorus, magnesium, copper, iron, zinc, manganese, boron, and other key elements in the surrounding soil.

Needless to say, nitrogen is essential for plant growth. However, the vast majority of what plants are able to absorb is in the ionic form of nitrogen. The aggregation of potassium is the most critical, potassium can not only promote photosynthesis, but also activate a variety of enzymes in the plant, as well as regulate osmotic pressure, regulate plant stomata to further control transpiration, etc., which is almost the key to the success or failure of Zhang Baobao's mission!

"Broken"

About ten seconds had passed, and the sycamore had already broken through the ground! Zhang Baobao was overjoyed when he saw it, but his hands that injected soil spiritual power into the soil did not dare to relax in the slightest.

"Sasa!"

Well?

Suddenly, the sound of leaves cutting through the air behind Zhang Baobao sounded!

The wind, blowing the leaves?

The surroundings are quiet, even the dandelions are not moving, where is the wind?

There are often wild boars and coyotes in the surrounding mountains and forests, so are there animals moving nearby?

But the sound only rang for a moment, and if there was an animal passing by, the sound of the animal rubbing against the leaves could not have ended in such a short time, right?

Zhang Baobao raised his heart to his throat, could it be that someone was following him? This is possible, after all, he is a big man, and he now has some reputation, which will inevitably damage the vested interests of some people and play a black hand behind his back, which is no longer news.

The plane tree in front of him is still growing wildly at a speed visible to the naked eye! Now the system task has achieved the most critical moment, and it just so happens that at this time, there is a movement behind him, and Zhang Baobao's forehead can't help but ooze beads of sweat the size of beans.