CATDOLL : CATDOLL: What kind of feeding form and method should be adopted for greenhouse silkworm breeding?

1. What kind of feeding form and method should be adopted for greenhouse silkworm breeding?

(1) Feeding method

In greenhouses, silkworms are generally reared in strips, with a width of 1.5 to 2 meters and a 0.3 to 0.5 meter sidewalk in the middle for easy operation. If the rearing area is not enough, silkworm platforms can be built in the shed for rearing. The rearing area should be no less than 40 square meters. The silkworm seat should be oriented in the direction of the shed. The silkworm platform should be vertically aligned with the silkworm seat below, about 1 meter high, and the inner distance between the two early root horizontal bars should be 1.1 to 1.2 meters, which is convenient for cocooning.

(2) Feeding methods

For greenhouse leaf cultivation, harvest leaves as usual and feed mulberry 4 times a day. As with strip mulberry cultivation, try to feed immediately after harvesting. Pay attention to the use of mulberry for regulation, feed more when the temperature is high, and feed less when the temperature is low. The amount of mulberry can be appropriately increased during the day when the temperature is high, and mulberry can be supplemented once at noon. When the temperature is high and dry, you can combine it with medicine to add food and eat water leaves cleverly.

It is recommended to use mulberry strips when raising silkworms in greenhouses in spring. When feeding, efforts should be made to keep the mulberry leaves fresh, but attention should be paid to matching thick and thin mulberry strips to make the silkworm seat flat and the mulberry leaves evenly distributed.

2. Is there any professional greenhouse builder in Mianyang?

It seems there is one in the section from Fenggu to Luxi. You can go and have a look.

3. How big a silkworm shed should be built on one acre of land?

For every 1 mu of mulberry garden, a greenhouse with a length of 8 meters, a width of 3 meters and a height of 3 meters can be built. A bed of silkworm seeds is determined by the area of ​​the silkworm bed of 45 to 50 square meters (practical area = building area × 85%).

Greenhouse site selection:

Located at both ends of the mulberry garden, the terrain is high, facing east and west, with good air, which is convenient for ventilation and heating.

4. Where is the best place to raise silkworms?

The best food for silkworms is mulberry leaves. Mulberry leaves are oval, with serrated edges (show specimens), and the leaves are relatively smooth. When feeding silkworms, make sure they are mulberry leaves before feeding them to the young silkworms; if you can't find mulberry leaves, you can also use lettuce leaves to feed silkworms.

Whether you feed silkworms with mulberry leaves or lettuce leaves, wash and dry the leaves. Do not feed silkworms with yellow and rotten leaves. To prevent the excess leaves from wilting quickly, put them in a plastic bag, tie the bag tightly, and place it in a cool place.

Feed silkworms with leaves at least 4 times a day, early in the morning, at noon, in the afternoon, and at night. The amount should be appropriate each time to avoid waste. You can put more leaves at night because silkworms eat mulberry leaves all night. Young silkworms should be fed with tender leaves, and the leaves do not have to be chopped. When changing leaves for young silkworms, you can directly cover the old leaves with new leaves, and remove the old leaves after the young silkworms have crawled onto the new leaves. This can reduce the casualties of silkworms and facilitate the removal of residual leaves and silkworm feces.

The silkworm box should be kept clean, and the residual leaves and silkworm feces should be removed in time, especially when raising silkworms with lettuce leaves. If you find sick silkworms, remove them immediately to prevent other silkworms from being infected. Sick silkworms usually have a poor appetite, stiff and hard body, or lack of energy, and gradually become weak and ooze smelly water. Do not spray pesticides in the silkworm room, as this will harm the silkworms.

During the growth and development of silkworms, the epidermis cannot grow with the growth of the body. When the growth of the silkworm's body is restricted, it must shed its skin. When the silkworm sheds its skin, it does not eat or move, as if it is sleeping. After about a day, a new skin is formed and the silkworm begins to move again.

When the silkworms are sleeping, do not think they are sick and throw them away. Before you figure out whether they are molting or sick, you can take them away and isolate them for observation. If they resume activities and eating after one day, you can take them back.

(3) Management of silkworms during the silk-spinning and cocoon-making period

When the silkworm grows to a certain size, it will spin silk to make a cocoon. The silkworm that is about to spin silk will have a transparent and shiny body, stop eating mulberry leaves, crawl to one side, and raise its head from time to time, swaying back and forth. At this time, you should quickly take out the silkworm and put it in the square grid made of paper strips (show the paper grid cocoon mountain, take it apart, and then put it back together to let students know how to make a paper grid cocoon mountain). Finally, cover the grid with a thick paper as a cover, and let the silkworm spin silk to make a cocoon in the grid.

(4) Management during the silkworm moth period

Silkworms usually emerge from their cocoons in the early morning. After they emerge from their cocoons, the male and female silkworms will mate. If the silkworms are far apart when they emerge from their cocoons, and there are few of them, and they are all female or male, they will not be able to mate and will die in vain. Therefore, several students can gather the newly emerged silkworms together so that they can mate in time.

The female moth will lay eggs after mating. At this time, you should put a piece of white paper (preferably white cotton paper) at the bottom of the box to allow the female moth to lay eggs on the paper for preservation.

5. May I ask where are the greenhouse vegetable bases in Mianyang? Thank you

Of course it is the Mianyang Agricultural Science District, which is full of greenhouse vegetables, supplying Mianyang City and surrounding counties. The Agricultural Science District is just on the way to Yanting. Give points, thank you!