Barley worms like to dry, strong vitality, and hunger-resistant, thirsty, can grow and reproduce throughout the year, with eggs - larvae - cockroaches until the emergence of the adult reproductive cycle is about 100 days. When the temperature is below 10 °C, it enters hibernation, and the optimum temperature for its growth and development is 20 °C ~ 32 °C, more than 35 °C can be lethal; air relative humidity requirements in 65% ~ 70% more appropriate. Barley worms have egg shells on the outer surface, a burr on the periphery, and a yolk film on the inner layer, which is a milky white egg material. The egg period is 8 -10 days. Adults lay the most eggs at 30 °C, and each adult has a maximum of about 1,000 eggs, and less than 14 °C. Few mating eggs are laid and no mating eggs are produced at temperatures below 10 °C. Barley worms like clusters and they feed at room temperature at 13 °C. They can still grow above 5 °C, grow fastest at 25 °C, and die above 35 °C. Larvae also sometimes bite their flies. Therefore, the insects, eggs, cockroaches, and adults of the same age should be screened and placed in their own containers.

During the growth of larvae, the body surface color appears white first, and after the first time, the pupa changes into yellow-brown, and thereafter, the moltings occur once every 4 to 6 days, and the pupa period is 6-10 times. When the larvae were 30 days old, they larvae in the feed and at room temperature 20 °C or more, the pods became adults after ten days of pupa.

The adults had just white feathered wings and were soft and thin, and they turned hard and turned dark brown after 1 to 2 days. Likes to be active at night, crawls quickly and can't fly. About ten days after emergence, mating began.

Barley larvae have about 700 to 800 mature larvae per kilogram, with a male to female ratio of 6:4. There are about 400 spawning females. Each female spawns at least 300 grains, taking into account the mortality and other factors in breeding. Impact, calculated by conservative methods can also be larvae 100 - 120 kg.

Second, barley insect breeding equipment.

The main equipment for barley worms is mesh screening and feeding containers.

Mesh box: It is used for spawning by adults and it is also a tool for separating eggs, body and food. Wooden box frame can be used to install gauze, mesh 12 mesh.

Containers: Plastic containers can be purchased directly or wooden boxes can be made by hand. Dimensions are length: 80 cm, width: 40 cm, height 10 cm. The interior of the container is required to have a smooth surface to prevent barley worms from crawling out and to prevent spiders, geckos and mice. And other hazards.

Third, breeding technology

The best place for feeding barley worms is in the leeward sun, cool winter and summer rooms, the light should not be too strong, keep warm, the most suitable temperature is 20 ~ 30 °C, relative humidity 70%. In summer, when the temperature is high, the sprinkler cools down on the ground; in winter, it needs to be insulated to ensure the normal growth and development of barley worms.

Feeding of adults: Adults lay their eggs 8 to 11 days after eclosion. First, a special sieve is placed at the bottom of the breeding basket (12 mesh stainless steel screens are used for the screens, and the area is equal to the bottom of the basket. The main effect is to quickly separate adults and Eggs) Sprinkle the adult food on the sieve. After the adult has laid eggs for 3 days, lift the sieve below and gently sifter it. The eggs and wheat bran will all fall. The rest of the sieve is full of adults. The sieve is placed in another culture basket together with adult worms, adult worms are added to continue the feeding of adults (the adults are spawned in the feed), and the cycle is repeated; after one week, the larvae are hatched, and the small barley worms are poured on the wheat. The bran is kept in a feeding container. It is also possible to place adults on a piece of white paper, sprinkle some bran on the paper, and allow any adult to lay eggs. Whenever there is a paper change every two or three days, the survival rate is generally more than 90%. This method of operation should be used to regenerate adult insects approximately once a day for 10 days. There may be eggs in the replaced material. Do not immediately remove them and concentrate them.

Every time after taking the eggs, appropriate adult and green materials should be added to the adult insects to timely clean the waste or molting.

Adults like evening activities, and they need to feed more at night. Green feed can be directly placed in feeding containers to allow barley worms to feed freely.

The promotion of barley worms is expected to become a leader in the field of insect culture in a short period of time.

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