Breeding New varieties of Silkworm in Hubei Province
The new silkworm varieties E Bombyx mori No. 3 and E Silkworm No. 4 won the first prize for scientific and technological progress in Hubei Province not long ago.
Compared with Huanghe × Zhaoxia, the main autumn variety used in Hubei Province, E silkworm No. 3 has strong resistance, the unified life rate of insect pupae is more than 92%, and the yield is high, with a cocoon yield of 33.95kg, an increase of 9.94%. The cocoon shell rate is 24.83%, the length of one cocoon is 1150 meters, the silk length is 941 meters, and the silk emergence rate is 17.88%, which increases by 8-16% respectively.
The multi-silk variety E Silkworm No. 4, which is used both in spring and autumn, was reared in autumn. Compared with Huanghe × Zhaoxia, the main variety used in autumn in Hubei, the resistance was strong, the unified life rate of insect pupae was more than 93%, and the yield was high, the cocoon yield per piece was 34.2kg, increased by 10.75%. The cocoon shell rate is 23.92%, the cocoon length is 1198 meters, the silk yield is 18.80%, and the silk yield is increased by 10-14%, respectively.
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Prevention and control measures of silkworm poisoning
First of all, it is safe to eat mulberry, do not eat "four-sided mulberry", mulberry leaves try first and then eat, confirmed non-toxic before a large number of leaves can be used. Mulberry trees with pesticide residues should be sprayed with 0.5% edible alkali water or 1% fresh lime water 1 to 2 days in advance, or mulberry leaves can be soaked in 1% edible alkali water or 1% fresh lime paste for 1 hour. It should be noted that the sprayer should be thoroughly cleaned and the edible lye or fresh lime water sprayed should be fully used (about 6-8 barrels per mu). If it is found that the silkworm has been poisoned, detoxification methods should be taken in time: immediately sprinkle Panax notoginseng ash or lime powder to make the silkworm stop immediately.
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Shancan 2
Breeding Unit: Sericulture Research Institute of Shaanxi Province. Approval status: Approved by Shaanxi Province Crop Variety Approval Committee in 1981, recognized by National Crop Variety Approval Committee in 1994. Variety registration number: GSI1003-l993. Source: (122X Su, 5 X 226X Su 6). Characteristics: Quadrilateral hybrid. Strong physique, good nutrition, high cocoon yield, cocoon silk quality is better. The average clarity is gi.65 points, cocoon silk fiber
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