What scene does this poem mainly depict?

Once farmers have land, they devote their whole lives to it.

Just like a wild goose in a dry day, as soon as it sees water, it dives into the water with its head and tail.

I wish I could send every piece of dirt to my tongue,

Whether it is salty or sweet, try it yourself first.

Sanhei, I have never slept in such a good bed.

I'm ready today. Tell wheat to sleep.

With such a good bed, wheat is very comfortable to lie down.

I just want to germinate and go out for some rain and dew.

Three black men raked the ground and sat down to have a rest.

I saw that the buckwheat I planted had blossomed and was as white as snow.

In the buckwheat field, there are two slugs calling.

Cheep, cheep, cheep, cheep, cheep, cheep, itch, itch, itch, itch, itch, itch, itch, itch, itch.

The main idea of a paragraph

The first part (section 1-3): Write the scene that farmers are extremely happy after they really own the land.

Part II (verses 4-8): Write three black plows and iron rakes while enjoying your land and work.

The third part (section 9- 12): Take Guo Er as a clue to compare the life and mood of Sanhei when he was a child and now.

The fourth part (section 13- 14): the plan of writing three evils.

The fifth part (section 15): take the whole poem and point out the center-the person who turns over is so sweet in his heart.