CATDOLL : CATDOLL: How to write a 24-day record of the silkworm breeding process (How to write a 24-day record of the silkworm breeding process)

1. What are the contents of silkworm rearing notes?

1. Observation record of eggs

Color:

shape:

size:

2. Hatching of eggs

temperature:

Time (how many days):

3 Observation records of larvae

First instar silkworm

Size:

Color:

Appearance:

Second to fifth instar silkworms

Length:

Food intake:

Color:

Pattern:

Number of valve pairs:

foot:

Action:

Food:

Number of peeling times:

4. Cocooning Observation Record

Silking days

Cocoon color:

Cocoon shape:

Cocoon size:

Quantity:

Days spent growing in the cocoon:

5. Cut open a cocoon and observe the pupa inside

Pupa color:

Shape:

Appearance:

Action:

6 Records of the Cocoon-Moth Transformation

Silkworm moth appearance:

Mating duration:

Number of eggs laid:

Survival days:

Eating conditions:

7 Observation Notes Summary:

2. My experience of raising silkworms?

1. Early in the morning, I went to the countryside to pick the best and tenderest mulberry leaves from the mulberry trees. The black silkworms were placed on the mulberry leaves I had just picked. They were small and black! One leaf was enough for many silkworms to eat. Eat it, eat it, and grow up quickly.

2. In just a few days, the silkworms have grown so big, and they are so cute. Every time they grow a little bigger, they will shed their skin, so remember to clean the silkworms' home.

3. There are not enough mulberry leaves. The grown silkworms have a big appetite. At night, you can only hear them munching on the food. I have to go prepare some mulberry leaves. The mulberries on the tree haven’t grown well yet, but they have already eaten all the leaves.

4. Eat, eat, eat. The fat and white silkworm will shed its skin four times and become a fifth-instar silkworm. At that time, the silkworm will spin silk and make a cocoon after eating mulberry leaves for a few days.

5. This is a silkworm spinning silk. At this time, the color of the silkworm looks slightly yellowish, and the yellow is transparent, especially the chest. You can already see the silk inside its body.

6. A silkworm will not stop spinning silk until it dies! Look, many moths are looking for their mates.

3. How should the growth in the silkworm breeding record be filled in?

The young silkworms swim slowly in the mulberry leaves, crawl around, grow slowly, then spin silk, shrink themselves in the silk, turn into pupae, then shed their shells, crawl out of the pupae, turn into small insects, and repeat the cycle over and over again?

4. Observation records of silkworms?

Silkworm breeding diary

April 9, 2018

On the way home from school this afternoon, my mother saw an old man selling silkworms at the gate of our school, so she spent one yuan to buy ten little silkworms. After I finished my homework, I began to observe them. 1. The color of these silkworms is gray, some are yellow, and they are only half the size of a sewing needle. At 8:30 in the evening, I saw that the silkworms had made several holes in the mulberry leaves.

2. Later I discovered that silkworms would twist their bodies and escape when they encountered danger.

3. I found that the feces of silkworms are like black sesame seeds, and the mouths of the young silkworms are black.

April 9, 2018

Today I found that the silkworms have white heads and yellow bodies. Suddenly I found that silkworms can play hide-and-seek with leaves. I also found that in addition to white silkworms, there are also brown silkworms. Some silkworms look like earthworms.

I counted the silkworms today and found two very small ones. Some of the larger ones have small white spots on their mouths.

April 9, 2018

After not seeing them for three days, I discovered that the silkworms had grown at an alarming rate. They were now terrifyingly large compared to a few days ago.

April 9, 2018

Today I found a silkworm starting to spin silk.

April 9, 2018

Brief comment: Careful observation will allow you to gain some knowledge that may not be found in books

5. Write an essay introducing the process of sericulture and the habits of silkworms?

Raising silkworms is a job that requires carefulness and endurance. Silkworms start out as tiny black caterpillars. Every time you change the mulberry leaves for them, you have to gently twist them out with a small brush. When they shed their skin and become white silkworms, they are the cutest.

The silkworm may eat, it eats non-stop day and night, and when the fat and white silkworm girl sheds her skin again, it is time for it to spin silk. At this time, it stops eating and drinking until it turns into a pupa, and finally emerges from the pupa and becomes a moth to lay eggs, thus the life of the silkworm will come to an end.

6. How to fill in the silkworm growth record sheet?

The growth record of silkworms should first record the time, secondly the temperature, and thirdly the length.