CATDOLL : CATDOLL: Is the cat with a small tail on its back male or female?

Is the earthworm with a small tail on its back male or female?

Earthworms do not have tails on their backs. This is because the long strip of material that grows from the tail of female earthworms is an egg sheath, which is used to reproduce offspring. Earthworms are insects with flat bodies that are brown and black in color. Male earthworms have wings, while female earthworms do not. They often move in the soil at the base of the walls of old earthen houses. Generally, the male and female earthworms can be distinguished by whether they have wings on their backs. Male earthworms have wings, while female earthworms do not.

How does earthworm taste? Essential techniques for earthworm breeding

The following methods can be used to adjust the temperature and humidity: (1) Heating: When the required temperature cannot be reached in the breeding environment, the indoor temperature can be increased by using a stove, etc., and the local temperature of the pit or pool can be increased. (2) Cooling: If the temperature in the pit or pool exceeds the suitable temperature of the earthworm in summer, water can be sprinkled on the indoor ground, ventilation can be strengthened indoors and in the pit or pool, exhaust fans can be installed, or basins and ice trays can be added to the pit or pool. If the temperature continues to be high and dead insects are found, they should be screened in time to screen out old nymphs or some adults, and used as medicine after treatment to reduce the insect population density in the pit or pool and reduce the amount of food. (3) Humidification: When the humidity in the breeding site or pit or pool is lower than 15%, spraying and ground sprinkling should be used, and items with large evaporation surfaces after absorbing water, such as absorbent soft foam boards, cotton fiber fabrics, soaked clothes and quilts, etc., should be hung in the corners of the pit or pool to dissipate moisture. (4) Dehumidification: When the humidity in the pit or pool exceeds 30%, dehumidification measures should be taken in time, such as opening doors and windows and exhaust fans to enhance ventilation. If the outdoor atmospheric humidity is too high and continues to be high, calcium chloride wooden boxes and quicklime boxes should be placed in the corners of the pit or pool to achieve the purpose of local dehumidification.

1. Feeding soil (nest mud) Soil is the place for earthworms to grow, develop and reproduce, and can provide some water and nutrients. Therefore, selecting and preparing feeding soil is crucial to the success of earthworm breeding. Feeding soil should be loose, fertile and moist. Generally, garbage soil, fermented cow dung or garden soil, or sandy soil can be used. Feeding soil should be exposed to the sun for disinfection, and sieved with a 6-mesh sieve to remove impurities. 2 kg of weathered lime powder can be added to every 100 kg of soil to increase calcium to supplement the calcium consumed by earthworms when they molt and lay eggs. Adding plant ash, rice husks, sawdust, and fermented manure to the feeding soil can increase the looseness and fertility of the soil. The humidity of the feeding soil should be controlled so that it can be kneaded into a ball by hand and will fall apart when loosened. The water content should be 15% to 20%. Too much or too little water content is not conducive to the growth and development of earthworms. The thickness of the breeding soil increases with the age of the insects. Generally, the thickness of the breeding soil for young nymphs is 7 to 10 cm, for medium-sized nymphs is 15 to 20 cm, and for large nymphs or adults is more than 30 cm.

(ii) Feed: Earthworms have a varied diet and take many types of feed. The main concentrated feeds include wheat bran, rice bran, various oil cake residues, tofu residues, etc.; green feed includes various vegetable leaves, melon peels, fruit peels, vegetable stems and leaves, as well as mulberry, poplar and willow leaves; animal feed includes leftovers and residues of pigs, cattle, sheep, chickens, ducks, fish, etc., as well as earthworms, etc.

3. Management Technology

1. Egg incubation: Place the egg sheath in an incubation tank (or pool) for incubation. Soak the egg sheath in 5000 times potassium permanganate solution for 1 minute for disinfection and then dry it for later use. The incubation soil should also be mixed with 1000 times Sanisol solution for disinfection and then dried for later use. The ratio of soil to eggs during incubation is 1:1. The soil moisture content is 25% to 30%, and the temperature is 22 to 32℃. During the incubation period, the temperature and humidity are slightly different in the early and late stages. It is better to have a slightly lower temperature and humidity in the early stage and a slightly higher temperature in the late stage.

2. Stocking density: Earthworms like to live in groups and can be raised at a high density, but the stocking density cannot be too high. Generally, it should be determined according to the age of the insects. The stocking density per square meter is: 6,000 to 10,000 nymphs from 1 to 3 instars; 3,000 to 5,000 nymphs from 4 to 6 instars; 1,500 to 2,000 nymphs from 7 to 9 instars; 1,000 to 1,100 nymphs from 10 to 11 instars; and 400 to 500 breeding insects.

3. Feeding? The feed should be "a combination of green and fine, with green as the main". The feeding time should be in the evening. Select clean fresh leaves, vegetable leaves and bran, and evenly spread them into the pool or box for earthworms to eat freely. Feed coarse feed once every 4 days and fine feed once every 7 days. It is better to feed enough fine feed. It is also necessary to feed various juicy feeds such as fruit peels and melon peels. Feeding methods and quantities are different because the feeding amount and the depth of the soil layer are different for the different ages of insects. The 1st to 2nd instar nymphs are looking for food on the surface of the breeding soil. You can sprinkle the feed on the surface soil, biased around the pit. After the 2nd instar, you can add green feed. Nymphs over the 5th instar come out of the soil to look for food. You can sprinkle a layer of rice husks on the surface of the feed soil, and then spread plastic cloth or wooden boards, and place fine feed on it.

4. Emasculation: Male adults cannot be used as medicine. The male insects used as medicine are the last few nymphs before they grow wings. In breeding, male insects generally account for 30% of the total number of insects, and only 5% of male insects are needed to meet the mating needs. Therefore, when most nymphs develop to 7-8 years old, the excess male nymphs can be picked out and processed for medicine.

5. Collecting egg sheaths: Earthworms have the habit of eating egg sheaths, especially when there is insufficient feed, which can cause a large loss of egg sheaths. Therefore, the egg sheaths should be taken out in time and placed in an incubation tank (or pool) for incubation. Generally, every 15 days

Earthworms should be mainly used as medicinal materials