March 12 is the annual Arbor Day, and Mobei Senior High School in Mobei City also has corresponding plant activities.

In the early morning, the teachers and students who participated in the activity set off in a hurry.

There are vast wastelands and sandy lands in Mobei, and the work of afforestation, sand prevention and control, and ecological protection is carried out all year round, and special attention is paid to Arbor Day, so there are more than 300 teachers and students, mainly high school freshmen and sophomores, and only a few student union cadre representatives come to high school juniors.

"Students, afforestation is related to our future, don't just plant trees on your mobile phone, but implement it in reality, plant trees when you have time, plant them one by one, and strive to make our homes clearer, more lush forests, and greener mountains."

The students stood in this remote wasteland far from the city and listened honestly to Principal Cui's words.

Lee Woo-ho is also listening, sophomore party, this is the second time he feels the fear of being dominated by Principal Choi on Arbor Day. Principal Cui is not the pot-bellied and annoying one, because he has a good temper, and he is usually very popular with everyone, but he loves to talk about big truths, and he loves to talk about big things very much.

After a long time, just when everyone was drowsy in the morning, Principal Cui finally said a few pages of manuscript and began to work with the teachers and students.

This wasteland is not yet a desert, and there are some solitary weeds, but they are also thinning. The location of the pit to be dug and planted has been marked in advance by the Forestry Department, and the saplings are also placed next to it, they only need to dig out the soil with a shovel, plant the saplings in it, and then fill in the soil.

"Students, planting trees is planting hope, and planting trees is planting happiness." Principal Cui's middle-aged face was very serious, and while walking among the crowds, he said, "Planting trees is planting the future!" What are you waiting for? Do it! ”

The people around laughed lightly, and it was Li Yuhao who was named by the principal, and they didn't want to be lazy, they just hadn't started yet.

"Principal Cui, don't you think you're still finished?" Li Yuhao pretended to be helpless, and everyone's laughter was even happier.

Principal Cui could afford this kind of joke, and took a shovel and passed it to this kid, "It's over!" Hurry up and dig, it's you. ”

In the smiling eyes of Wang Jiawei, He Ziyi and others, Li Yuhao held this shovel, as the flower of the motherland of the new generation, he has been well nourished since he was a child, although he is a sophomore in high school, he has grown tall and tall, and he is 1.8 meters tall, and he usually plays basketball, so he has the strength to dig the ground.

The shovel went down into the mud, and Li Yuhao loosened the soil by stepping on the shovel with his foot, and shouted vigorously to dig up the spade soil.

It took a lot of effort, but it wasn't difficult!

"Okay, keep digging." Principal Cui nodded in satisfaction and walked away to continue his inspection of the other students.

When Li Yuhao went down with the second spade, he felt that something was wrong...... I felt a little inexplicably uncomfortable, as if there was something in the dirt......

The third shovel went down, and he saw in the mud puddle at his feet, "What is that...... Bugger? ”

"Huh?" Wang Jiawei also saw it, his eyes suddenly widened, and He Ziyi, the girl, screamed even louder.

They saw that the mud pit that had been dug loosely was full of dense insect eggs, all of which were pale yellow strips, immovable, and burrowed into the mud.

"What's wrong?" Teacher Liang, the head teacher, walked over, and Principal Cui, who had not gone far from the other side, also turned around and came back. Seeing this, the two adults frowned, there seemed to be something wrong with this wasteland, and Principal Cui said, "This seems to be locust eggs...... Teacher Liang, quickly ask Captain Luo and them to come and have a look. ”

Principal Cui is a native of Mobei, he used to do farm work and knows a little, but Captain Luo is a person from the Forestry Bureau and is more professional.

"That's a lot of stuff." Principal Cui took a shovel and personally shoveled out some mud cubes, which were also full of insect eggs.

Li Yuhao and a few people watched, and more students came over.

Because of the effective governance, many places have not seen locust plagues, but the ecology of Mobei is complex, and there is a certain amount of locust occurrence area every year, so it can be said that locust plagues occur every year, but due to multi-departmental prevention and control, they generally do not develop into news level.

Most of the students here have never touched the farmland, so they have never been in contact with locusts, and it is disgusting to look at these eggs.

"I have a dense phobia ......" a girl made a disgusted voice, although she was scared, but she was still watching the excitement.

"What are you afraid of?" Principal Cui didn't have a good breath and said, "In the past, when we were young, we dug it up and roasted it and ate it, but it was fragrant." ”

Everyone suddenly made a sound of disgust, but Li Yuhao had a slightly strange feeling, eat it? Throat swallowed......

At this time, Teacher Liang and Captain Lin came back quickly, and Principal Cui gave up his position.

"Principal Cui, this is indeed a locust egg." Captain Luo recognized it at a glance, "It should be a hairy-footed horned locust." ”

"Hmm." Principal Cui had already checked some information with his mobile phone, and took the opportunity to educate: "Students, the ovipositor of the female locust can extend twice as long as its body when it penetrates into the soil, and it can lay 100 eggs at a time. When there is a locust plague, there can be thousands of egg masses per square meter, 50 eggs per egg mass, and hundreds of thousands of insect eggs per square meter, one square meter! Let them overwinter successfully, and in another two or three months to come out in the summer, that would be a big deal. ”

Hundreds of thousands of locusts hatched in one square meter? The students listened to it one after another.

"It's not that serious." Captain Luo smiled on his simple and dark face, "Not every insect egg can become an adult, and the number of insect eggs is usually not so large." In recent years, the population density of this kind of hairy-footed horned locust is an average of 30 adults per square meter, and 100 per square meter is a lot. ”

"Yes, yes." Principal Cui nodded humbly, "Students, have you heard, locusts and locust plagues are two different things. ”

"But if the locust area is too large and not controlled, the low population density can also cause disaster." Captain Luo said again, as if talking to Principal Cui about cross talk, which made the students laugh, "The annual locust occurrence area in Mobei City is millions of acres in farmland and around farmland. ”

But this wasteland was fine for the past few years, and Captain Luo and the others took a shovel to dig some pits in the surrounding soil to check, but fortunately there were no egg masses.

It seems that Li Yuhao won the lottery with a spade, and the eggs are concentrated in those ten square meters, which is very small. However, because of this incident, this tree-planting activity was suspended first, and Captain Luo and they needed to call people from the Agricultural Bureau to come over and do inspections and pesticides to do a good job in prevention and control.

"Captain Luo!" Li Yuhao chased after him and asked a doubt in his heart: "How deep can insect eggs be hidden in the soil?" ”

"It's just on the shallow surface, less than half a meter." Captain Luo said that he is very kind to studious students.

"Oh......" Li Yuhao listened, but he still had a strange feeling, the more he looked at the mud that had been dug out of the eggs, the more so.

Look around, a barren land...... Could it be that there will be a deeper position as well?

And that feeling of longing was a little stronger, which made Li Yuhao swallow his saliva again.

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