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1.Characteristics and characteristics Eggs are sharply oval, sparrow egg color, able to withstand the temperature of ~ 30 °C, the optimum temperature of 18 °C warm species, the development of the starting temperature of 10 °C 0.6 °C, the effective temperature of incubation 181.7 °C 11.6 °C. The 1st to 3rd instar larvae (silkworm) have a strong cluster, and the 4th to 5th instar larvae have the habit of falling to the ground when they are touched, and they frequently crawl before camping. During the larval stage, most of the larvae were 4 and 5 instars. After the third instar, the body color began to separate. By the fifth instar stage, olive yellow green and indigo green and other body colors were isolated.蛹 (茧) Long oval, initially white, gradually turned chestnut brown or light brown. The lotus root starch contains 51.73% of protein and 22.42% of fat. It also contains 19 kinds of amino acids. The necessary 9 kinds of amino acids are available. The adults (moths) have more than 10 colors such as chestnut brown, bronze green, tiger skin yellow and squirrel gray. They have intense phototaxis and are easily disturbed when they are mated. The quality of the silk is excellent, and the fluorescence reflectance of the hand-spun yarn is as high as 14.9%, in which the plain yarn and the dyed yarn are respectively 1.10 and 9.23 percentage points higher than the tussah hand spinning yarn. The dyed silkworm cocoon silk can be observed in the natural light with a clear flicker.
2. Output and Benefits In the past five years, 1,720 thousand seeds have been artificially produced in cities (counties) such as Fengcheng, Xiuyan, Kuandian and Benxi, which are rich in chestnut silkworms, and 437.5 kg eggs have been produced and 617 stocked. With 158,000 kilograms of pupa, 4500 kilograms of cotton are produced, and direct economic benefits of 10.435 million yuan are obtained. On average, each silkworm farmer can increase income by 8,000 yuan in only two months of sericulture, which is higher than the income of stocking tussah. More than 50%.
3. Domestication and Breeding Liester silkworm is suitable for adopting the method of thinning in the field at full-age during the domestication process, which not only saves labor, labor, and reduces costs, but more importantly, it can avoid the silkworms and flood seasons caused by multiple shearing. loss. Litsea silkworm is an omnivorous insect. Young leaves of Pterocarya stenopterae, walnut autumn, eucalyptus, chestnut, ginkgo and eucalyptus can be used as feed. Among them, Pterocarya stenoptera and walnut autumn are most suitable. More than 97%. The helium layer rate reached more than 70%. The warm egg room should choose a house with high dryness, uniform sunlight, clean environment and good humidity and ventilation. Before the egg is warmed, 3% formaldehyde solution is used to completely sterilize the silkworm (the room temperature is kept at about 26°C) and the silkworm worm. Sealed for 48 hours, the period of warm eggs should be 25-28 days ahead of the ant period. After seeing the silkworm seedlings, 5 to 6 grams of eggs are placed in each ant bag and firmly snagged on the middle and upper branches of the autumn leaves of Pterocarya stenoptera or walnut trees. After the ants are hatched, they can crawl upward along the branches. After taking the leaves, the silkworms were cut to the big silkworm field before the 3rd instar sleep. It is advisable to keep 2/5 of the leaves in each tree after eating. At the end of most silkworm cocoons, after the body wall is hardened, pick the silkworm clams on a sunny day and pick them out after thinning, and then remove the cockroaches, pick out cockroaches, and sell them as soon as possible. Kinds of crickets should be worn in a timely manner and properly kept for preparation.
Lieko silkworm and its artificial domestication technique
Limousin is a wild economical insect that is completely metamorphosed by tussah, commonly known as lantern silkworm, widely distributed in China's “Three North†region and Central South region. It is one of China's important specialties and is still in the wild state. The chestnut silk is an expensive natural fiber with a unique fluorescent flicker. It is used as a variety of anti-counterfeit signs and high-end clothing products. Its price is 10 times that of tussah silk. Litchi cocoon is not only a high-protein, low-fat, high-quality health food, but also contains many unique pharmaceutical ingredients that can cure a variety of diseases. Its price is six times that of tussah cocoons. Due to the sharp increase in demand at home and abroad and the rising selling price, the predatory overdose collection of wild chestnut cocoons has become increasingly serious, almost reaching the danger of extinction. The implementation of artificial domestication to save the rare species of wild silkworm resources and achieve rational development and utilization has become an imminent and important task in the special breeding industry.