Math problems in sericulture writing process

1, 100 million x=divided by x=2

2 (1) Average x pieces per day 5x=650 x=130 130 pieces per day All tasks are 650 divided by pieces.

2600 divided by 130 equals 20. 20-5=15 days.

2) The selling price is 100 times 150 yuan, and the profit for selling 50 pieces is (150-100) multiplied by 50 is 2500 yuan.

The rest is discounted in half according to the selling price, 75 yuan, 50 pieces are sold, and the loss (100-75) is multiplied by 50 for 1250 yuan.

2500 is greater than 1250 so the retailer is earning.

3 (1) Thirty shirts are made in such sizes that the fabric used to make them is three-fifths of the fabric. Divide 50 by 30

So the silk fabric used in the blouse can be used to make a skirt 60 times three-fifths equals 36

2) 1 - (20 divided by 50) - (20 divided by 60) = 1 in 15.

The rest of the silk fabric is used to make skirts, and one-fifteenth multiplied by 60 equals four.

4 (1) $120 minus (120 times the extracted common factor 120 times (equal to $24.)

2) This... Several methods are calculated to compare the size...

2. (1) In the first week (5 days), 650 pieces were processed, and 25 of all tasks were completed. Total task 650 25 = 2600, daily workload 650 5 = 130 Remaining 2600-650 = 1950 1950 130 = 15 (2) Total purchase price = 100 * 100 = 10000 50 pieces are sold after the price increase of 50% per piece 150 * 50 = 7500 The remaining 50 pieces are folded in half 150 2 * 50 = 3750 The sales price is 7500 + 3750 = 11250

Kids now!! A little emotional, to speak from the heart, such a question, you still have to do it yourself seriously, you can ask the idea, but the homework is still done by yourself, you say yes.

Kiss <>

Silkworm raising is a traditional agricultural technology, the following is the detailed process of silkworm raising: 1Selection:

Choose high-quality seeds, after they hatch, the larger the silkworm pupae, the faster the development, the higher the cocoon removal rate, the longer the lifespan, and the more cocoon production, the better the quality. 2.Incubation:

The selected seeds are placed in a suitable temperature and humidity environment and allowed to hatch into silkworm eggs. 3.Rearing larvae:

After the silkworm eggs hatch, larvae appear. The larvae eat mulberry leaves in the cocoon, grow and develop navolta, until the body length reaches 4-5 cm, and begin to spin. 4.

Cultivating silkworm cocoons: Because the young silkworms weave cocoons for a long time, the final chrysalis for making silkworm cocoons should use these silkworms, and put them alone in a raised and ventilated luxuriant house, so that they can weave a tight cocoon. 5.

Harvesting silkworm cocoons: When the pupae are hatched in the cocoon, the cocoons are boiled in water to kill the silkworm pupa, and then the cocoons are picked out and dried to make mulberry silk. The above is the detailed process of silkworm raising.

In order to obtain a good cocoon, it is necessary to be very careful and patient, and to strictly control the environment and manage aspects such as the food hygiene of the silkworm.

Summary. The whole detailed process of sericulture.

The following is the expansion content: 1. In the early stage of silkworm raising, the silkworm eggs should be wrapped in paper towels and placed in a warm environment to hatch. 2. After the silkworm eggs hatch, the young silkworms should be placed on the tender mulberry leaves to make them forage on their own.

3. After the young silkworm has undergone four times of shedding the bark of the first key, it will enter the cocoon stage, and it is necessary to provide branches for it to make cocoons. 4. After the silkworm moth hatches, it should be covered with a net cover on the container to avoid its escape.

1. In the early stage of hatching silkworm eggs, you should choose round and full silkworm eggs with natural color, put them in a paper towel with dry letters, fold and wrap them in a pocket or a warm environment, and wait for one to two days, the silkworm eggs will turn from white to black, and hatch black larvae. 2. Provide food silkworms to feed on mulberry leaves, after hatching, to provide fresh mulberry leaves, let the young silkworms eat on their own, after the young silkworms have undergone a molt, to provide them with older mulberry leaves, so that the silkworms can ingest enough cellulose for silk, and there can be no water on the mulberry leaves, so as not to die of silkworms. 3. After four molting, the surface of the silkworm will become shiny, and the silkworm will enter the cocoon period at this time, and the lead wheel should be put into the branch in the breeding vessel, or the net cover should be built with a rope to provide good cocoon conditions for the silkworm, and the sliding shed should keep the environment quiet, so as not to affect the cocoon of the silkworm.

4. After more than ten days of hatching, the adult maintenance silkworm moth will break out of the cocoon, at this time it is necessary to cover the net cover above the breeding utensils to avoid the escape of the silkworm moth, and the female silkworm moth and the male silkworm moth should be placed in a vessel, so that the silkworm moth will mate on its own, and the silkworm eggs will be laid on the inner wall of the container.

Summary. Silkworm breeding refers to raising silkworms (Chinese silkworms) under specific conditions for cocoon production. The following is the detailed process of sericulture:

1.Silkworm seed purchase: choose silkworm seeds with excellent varieties, high survival rate and large cocoon production.

2.Silkworm house construction: The silkworm room should be selected in a place with good ventilation, sufficient light, suitable temperature and no other pests.

The building of the jamjam room should be strong, impermeable to wind and water, and the floor and walls should be kept clean. 3.Cocoon production:

Silkworm seeds are placed on mulberry leaves for rearing. Silkworm seeds should be incubated in the incubation room, and after hatching, they should be placed in the seedling tray, and only after reaching 3 to 4 years of age can they be removed from the seedling tray and put on mulberry leaves to provide them with sufficient water and nutrients. The silkworm room is kept at a suitable temperature and humidity, and the growth and metabolism processes of silkworms are observed and treated.

4.Cocoon baking: When the silkworm body has completed the last molt 3-5 days, it begins to pull out the cocoon by mouth.

The larvae inside the cocoon degrade themselves, allowing the cocoon to peel off and form an empty shell. At this point, the production of silkworm cocoons is completed. 5.

Silkworm cocoon processing: The picked silkworm cocoons are sorted, the insect chamber and defects are removed, cleaned, dried and then cocooned or sifted, so as to make high-quality silk.

Silkworm breeding refers to raising silkworms (Chinese silkworms) under specific conditions for cocoon production. The following is the detailed process of silkworm raising:1

Silkworm seed purchase: choose silkworm seeds with excellent varieties, high survival rate and large cocoon production. 2.

After the construction of the silkworm house, the silkworm room should be selected in a place with good ventilation, sufficient light, suitable temperature and no other pests. The building of the jamjam room should be strong, impermeable to wind and water, and the floor and walls should be kept clean.

3.Silkworm cocoon production: Silkworm seeds are put on mulberry leaves for feeding.

Silkworm seeds should be incubated in the incubation room, and after hatching, they should be placed in the seedling tray, and only after reaching 3 to 4 years of age can they be removed from the seedling tray and put on mulberry leaves to provide them with sufficient water and nutrients. The silkworm room is kept at a suitable temperature and humidity, and the growth and metabolism processes of silkworms are observed and treated. 4.

Cocoon baking: When the silkworm body has completed the last molt 3-5 days, it begins to pull out the cocoon by mouth. The larvae inside the cocoon degrade themselves, allowing the cocoon to peel off and form an empty shell.

At this point, the production of silkworm cocoons is completed. 5.Silkworm cocoon processing:

The harvested silkworm cocoons are sorted, the insect chamber and defects are removed, and the wax is washed, dried and then cocooned or sifted to make high-quality silk.

It should be noted that the temperature, humidity, ventilation and feed conditions need to be strictly controlled at each stage to ensure that the silkworms can grow healthily and achieve high-quality cocoons. In addition, pests should be removed in time to prevent them from harming silkworms.

Silkworm raising refers to the production process in which Hu Pei artificially cultivates silkworm moths to obtain silk. Here are the detailed steps of silkworm raising:1

Silkworm baby hatching: first buy silkworm eggs, silkworm eggs should be stored in a dry, ventilated, warm socks suitable place. When incubating, the eggs need to be placed in an environment with a temperature of about 25, and usually need to be incubated for 7-10 days.

2.Silkworm baby feeding: The silkworm baby that comes out after hatching should be fed.

The food of silkworm babies is mulberry leaves, and they need to choose mulberry leaves that are fresh, tender and green, and free of diseases and pests. Silkworm babies need to be fed 4-5 times a day, and the residual leaves and feces in the silkworm room should be cleaned up in time for each feeding. 3.

Silkworm baby peeling: Silkworm babies will continue to grow during the feeding period, and they will shed their skin every time they grow to a certain extent. Peeling is an important sign of the growth of silkworm babies, which generally needs to be carried out 4-5 times, and the whole process takes 12-14 days.

4.Silkworm baby silk: After the feeding period is over, silkworm baby silkworm will begin to spin silk.

Silk spinning needs to be carried out in a specific environment, usually in a silkworm room with a temperature of 23-27 and a humidity of 75-85%. In the silkworm room, it is necessary to keep it clean, ventilated and protected from pests and diseases. 5.

Spinning into a cocoon: The silk thread spit out by the silkworm baby will form a cocoon, and the quality of the cocoon determines the quality of the silk. The removal of the cocoon needs to be boiled or dried in warm water, and it needs to be graded after removal.

6.Silkworm moth feathering: The pupae in the cocoon will emerge into silkworm moths after 2-3 weeks.

The mating and egg laying of silkworm moths need to be carried out in a specific environment, generally in a silkworm room with a temperature of 25-28 and a humidity of 60-80%.

The whole detailed process of silkworm raising: silkworm eggs, ant silkworms, mature silkworms, silkworm cocoons, silkworm moths.

1. Silkworm eggs. Silkworms reproduce by eggs, and a female moth can produce about 450-500 silkworm eggs, weighing about 1 gram. The silkworm eggs look a lot like fine-grained sesame seeds, about 1 millimeter wide and about millimeters thick.

The eggs are pale yellow or yellow when they are first laid, turn red bean color after 1-2 days, and then turn gray-green or purple after 3-4 days, and then do not change again. The outer layer of the silkworm egg is a hard egg shell, and the inside is the yolk and serous membrane, and the embryo in the fertilized egg will continue to absorb nutrients in the process of development, and gradually develop into an ant silkworm.

2. Ant silkworms. When the silkworm just hatches from the silkworm egg, the color of the body is brown or russet, and there are many fine hairs, and it is very small before trembling, and it looks a bit like an ant, so it is called ant silkworm. The silkworm is about 2 mm wide and 2 mm long, and after crawling out of the egg shell, it takes about 2-3 hours to eat mulberry leaves.

3. Ripe silkworms. Mature silkworm refers to the end of the larva's development to the last instar, and gradually stops eating mulberry, and the silkworm body shrinks and becomes slightly transparent. The common four-sleeping silkworm matures after seven days of feeding mulberry in the fifth instar stage, and the normal development to the end of the fifth instar gradually decreases its appetite and excretes green soft feces, which is a signal that it is about to mature.

4. Silkworm cocoon. Silkworm cocoon refers to the cocoon of mulberry silkworm, the sac-shaped protective layer of mulberry silkworm pupal stage, containing pupal body. It is oblong, elliptical girdle, spherical or spindle-shaped and other different shapes, or slightly constricted in the middle, the cocoon has white, yellow, light green, flesh red and other colors, the diameter is cm, about 3-4 cm long, the surface is white, there are irregular wrinkles, and there are attached silk, which is fluffy.

The cocoon layer can be reeled, and the cocoon clothes and the reeled waste silk can be used as raw materials for silk cotton and silk spinning.

5. Silkworm moth. Silkworm moths are formed in silkworm cocoons, shaped like butterflies, and covered with white scales, but have lost the ability to fly due to the small size of their two pairs of wings. The head of the silkworm moth is small ball-shaped, with bulging skin holes, compound eyes and antennae, and the silkworm moth (adult) leaves offspring that die soon after.

The eggs laid by silkworm moths will complete the cycle of a new generation after hatching, pupating, and turning into moths.

Dear, hello, I am happy to answer for you, the whole detailed process of raising silkworms 1, hatching silkworm eggs: choose round and full, natural color silkworm eggs, put dry paper towels, and wait for a day or two after the silkworm eggs will turn from white to black, hatching larvae. 2. Provision of food:

After hatching, the young silkworm provides it with fresh mulberry leaves, and it should be noted that there is no water on the mulberry leaves. 3. Cocoon treatment: The silkworm will enter the cocoon stage after four molts, and put branches next to the breeding vessel section to provide it with cocoon conditions.

4. Adult maintenance: After more than ten days of hatching, the silkworm moth will break the cocoon, put the male and female silkworms in a vessel, and let it mate. I hope this service can help you to stop the Ming to you, thank you for your consultation, I wish you all the best!